chemistry lab

Page 1 of 13 Generated:September 23, 2020

Source: U.S. EPA AirData <https://www.epa.gov/air-data>

AirData reports are produced from a direct query of the AQS Data Mart. The data represent the best and most recent information available to EPA from state agencies. However, some values may be absent due to incomplete reporting, and some values may change due to quality assurance activities. The AQS database is updated by state, local, and tribal organizations who own and submit the data.

Get detailed information about this report, including column descriptions, at https://www.epa.gov/outdoor-air-quality-data/about-air-data-reports#aqidaily

Page 1 of 13 Generated:September 23, 2020

Source: U.S. EPA AirData <https://www.epa.gov/air-data>

AirData reports are produced from a direct query of the AQS Data Mart. The data represent the best and most recent information available to EPA from state agencies. However, some values may be absent due to incomplete reporting, and some values may change due to quality assurance activities. The AQS database is updated by state, local, and tribal organizations who own and submit the data.

Get detailed information about this report, including column descriptions, at https://www.epa.gov/outdoor-air-quality-data/about-air-data-reports#aqidaily

Air Quality Index Daily Values Report Geographic Area: Denver-Aurora-Lakewood, CO Pollutant: Overall Year: 2019

Date

Overall AQI

Value Main

Pollutant

Ozone AQI

Value

PM2.5 AQI

Value

SO2 AQI

Value

NO2 AQI

Value

PM10 AQI

Value

CO AQI

Value

01/01/2019 52 PM2.5 43 52 11 37 . 7

01/02/2019 65 PM2.5 44 65 4 58 44 16

01/03/2019 57 NO2 45 55 9 57 46 17

01/04/2019 58 NO2 45 51 9 58 51 17

01/05/2019 56 PM2.5 45 56 6 52 37 19

01/06/2019 51 PM2.5 43 51 4 44 28 15

01/07/2019 76 NO2 43 34 7 76 46 13

01/08/2019 46 NO2 45 40 4 46 32 10

01/09/2019 68 PM2.5 43 68 6 56 60 14

01/10/2019 72 PM2.5 36 72 6 46 46 14

01/11/2019 48 PM2.5 40 48 1 37 10 11

01/12/2019 51 PM2.5 42 51 1 41 12 10

01/13/2019 48 PM2.5 44 48 1 46 19 9

01/14/2019 51 NO2 49 42 3 51 31 9

01/15/2019 62 NO2 46 44 4 62 47 13

01/16/2019 51 NO2 42 47 4 51 44 13

01/17/2019 52 PM2.5 44 52 4 52 47 15

01/18/2019 55 PM2.5 40 55 4 51 29 16

01/19/2019 47 NO2 40 46 3 47 21 9

01/20/2019 43 Ozone 43 35 3 42 20 10

01/21/2019 70 NO2 48 59 10 70 42 15

01/22/2019 42 NO2 41 18 0 42 8 6

01/23/2019 63 NO2 42 35 6 63 20 7

01/24/2019 41 Ozone 41 29 0 41 10 7

01/25/2019 58 NO2 44 54 4 58 25 11

01/26/2019 49 NO2 45 32 1 49 19 11

01/27/2019 47 NO2 41 17 1 47 15 6

01/28/2019 44 Ozone 44 20 0 43 8 6

01/29/2019 66 NO2 44 56 4 66 26 13

Page 2 of 13 Generated:September 23, 2020

Source: U.S. EPA AirData <https://www.epa.gov/air-data>

AirData reports are produced from a direct query of the AQS Data Mart. The data represent the best and most recent information available to EPA from state agencies. However, some values may be absent due to incomplete reporting, and some values may change due to quality assurance activities. The AQS database is updated by state, local, and tribal organizations who own and submit the data.

Get detailed information about this report, including column descriptions, at https://www.epa.gov/outdoor-air-quality-data/about-air-data-reports#aqidaily

Air Quality Index Daily Values Report Geographic Area: Denver-Aurora-Lakewood, CO Pollutant: Overall Year: 2019

Date

Overall AQI

Value Main

Pollutant

Ozone AQI

Value

PM2.5 AQI

Value

SO2 AQI

Value

NO2 AQI

Value

PM10 AQI

Value

CO AQI

Value

01/30/2019 71 PM2.5 46 71 7 64 33 13

01/31/2019 61 NO2 46 55 6 61 44 14

02/01/2019 57 NO2 43 52 6 57 55 14

02/02/2019 50 NO2 43 35 3 50 33 11

02/03/2019 47 Ozone 47 20 1 44 15 11

02/04/2019 51 NO2 46 48 4 51 33 8

02/05/2019 76 PM2.5 45 76 4 42 51 9

02/06/2019 46 PM2.5 45 46 1 26 10 9

02/07/2019 51 PM2.5 46 51 4 51 15 9

02/08/2019 99 PM2.5 48 99 9 85 46 18

02/09/2019 87 PM2.5 48 87 9 82 40 23

02/10/2019 87 PM2.5 48 87 4 46 28 8

02/11/2019 72 PM2.5 46 72 6 57 35 17

02/12/2019 55 NO2 47 49 3 55 40 9

02/13/2019 60 NO2 47 48 7 60 58 10

02/14/2019 46 NO2 44 35 3 46 41 6

02/15/2019 58 PM2.5 47 58 3 47 40 8

02/16/2019 53 PM2.5 45 53 3 37 22 8

02/17/2019 46 NO2 44 26 1 46 12 6

02/18/2019 57 PM2.5 43 57 0 26 15 7

02/19/2019 74 PM2.5 46 74 0 34 20 7

02/20/2019 65 PM2.5 45 65 4 49 45 9

02/21/2019 52 PM2.5 44 52 1 46 25 9

02/22/2019 70 PM2.5 47 70 1 33 17 7

02/23/2019 60 PM2.5 49 60 3 46 19 7

02/24/2019 51 NO2 50 18 1 51 8 6

02/25/2019 64 NO2 44 58 7 64 32 9

02/26/2019 99 PM2.5 44 99 4 52 56 13

02/27/2019 72 PM2.5 44 72 1 41 22 13

Page 3 of 13 Generated:September 23, 2020

Source: U.S. EPA AirData <https://www.epa.gov/air-data>

AirData reports are produced from a direct query of the AQS Data Mart. The data represent the best and most recent information available to EPA from state agencies. However, some values may be absent due to incomplete reporting, and some values may change due to quality assurance activities. The AQS database is updated by state, local, and tribal organizations who own and submit the data.

Get detailed information about this report, including column descriptions, at https://www.epa.gov/outdoor-air-quality-data/about-air-data-reports#aqidaily

Air Quality Index Daily Values Report Geographic Area: Denver-Aurora-Lakewood, CO Pollutant: Overall Year: 2019

Date

Overall AQI

Value Main

Pollutant

Ozone AQI

Value

PM2.5 AQI

Value

SO2 AQI

Value

NO2 AQI

Value

PM10 AQI

Value

CO AQI

Value

02/28/2019 76 PM2.5 46 76 6 62 47 13

03/01/2019 58 NO2 47 51 4 58 32 10

03/02/2019 44 Ozone 44 33 0 21 12 6

03/03/2019 52 PM2.5 45 52 0 37 9 3

03/04/2019 84 PM2.5 77 84 3 61 32 8

03/05/2019 95 PM2.5 48 95 3 65 43 10

03/06/2019 153 PM2.5 80 153 3 71 61 10

03/07/2019 89 PM2.5 48 89 7 63 33 10

03/08/2019 79 PM2.5 54 79 7 61 40 16

03/09/2019 48 Ozone 48 16 0 25 16 5

03/10/2019 44 Ozone 44 38 0 42 30 7

03/11/2019 58 PM2.5 44 58 3 51 52 10

03/12/2019 71 PM2.5 44 71 3 44 51 10

03/13/2019 50 Ozone 50 17 1 24 . 6

03/14/2019 50 Ozone 50 16 0 31 6 3

03/15/2019 54 Ozone 54 30 0 47 15 10

03/16/2019 54 Ozone 54 31 0 49 27 9

03/17/2019 54 Ozone 54 33 1 49 12 9

03/18/2019 48 PM2.5 44 48 1 38 28 7

03/19/2019 55 NO2 54 39 1 55 31 7

03/20/2019 61 Ozone 61 38 3 51 41 6

03/21/2019 52 PM10 48 45 4 52 52 9

03/22/2019 49 Ozone 49 39 1 41 38 6

03/23/2019 51 Ozone 51 28 0 28 10 3

03/24/2019 50 Ozone 50 28 1 38 17 6

03/25/2019 64 Ozone 64 61 0 38 23 6

03/26/2019 67 Ozone 67 58 3 49 60 8

03/27/2019 67 PM10 61 62 6 61 67 10

03/28/2019 57 PM2.5 46 57 3 52 53 8

Page 4 of 13 Generated:September 23, 2020

Source: U.S. EPA AirData <https://www.epa.gov/air-data>

AirData reports are produced from a direct query of the AQS Data Mart. The data represent the best and most recent information available to EPA from state agencies. However, some values may be absent due to incomplete reporting, and some values may change due to quality assurance activities. The AQS database is updated by state, local, and tribal organizations who own and submit the data.

Get detailed information about this report, including column descriptions, at https://www.epa.gov/outdoor-air-quality-data/about-air-data-reports#aqidaily

Air Quality Index Daily Values Report Geographic Area: Denver-Aurora-Lakewood, CO Pollutant: Overall Year: 2019

Date

Overall AQI

Value Main

Pollutant

Ozone AQI

Value

PM2.5 AQI

Value

SO2 AQI

Value

NO2 AQI

Value

PM10 AQI

Value

CO AQI

Value

03/29/2019 35 PM2.5 35 35 0 23 7 7

03/30/2019 47 Ozone 47 26 0 29 9 3

03/31/2019 48 PM2.5 44 48 1 41 17 6

04/01/2019 51 Ozone 51 35 3 40 29 7

04/02/2019 54 PM2.5 41 54 0 34 28 7

04/03/2019 77 PM2.5 48 77 6 42 54 8

04/04/2019 61 Ozone 61 54 3 51 44 6

04/05/2019 67 Ozone 67 40 4 47 51 10

04/06/2019 71 Ozone 71 23 1 43 29 8

04/07/2019 64 Ozone 64 11 0 31 18 7

04/08/2019 52 NO2 50 33 3 52 50 7

04/09/2019 51 Ozone 51 30 3 43 50 6

04/10/2019 36 Ozone 36 19 1 25 13 6

04/11/2019 51 Ozone 51 30 1 34 9 5

04/12/2019 44 Ozone 44 43 0 21 13 3

04/13/2019 46 Ozone 46 35 1 30 9 6

04/14/2019 58 Ozone 58 17 3 39 11 6

04/15/2019 67 Ozone 67 28 4 51 52 8

04/16/2019 54 Ozone 54 50 7 45 45 7

04/17/2019 50 Ozone 50 34 1 42 31 7

04/18/2019 48 Ozone 48 18 0 42 14 6

04/19/2019 61 Ozone 61 21 4 39 29 5

04/20/2019 74 Ozone 74 25 3 37 23 6

04/21/2019 58 Ozone 58 15 1 39 18 5

04/22/2019 40 Ozone 40 30 0 25 9 6

04/23/2019 50 Ozone 50 48 1 38 25 6

04/24/2019 64 Ozone 64 32 4 41 36 6

04/25/2019 87 Ozone 87 26 0 42 31 5

04/26/2019 58 PM10 49 45 1 44 58 7

Page 5 of 13 Generated:September 23, 2020

Source: U.S. EPA AirData <https://www.epa.gov/air-data>

AirData reports are produced from a direct query of the AQS Data Mart. The data represent the best and most recent information available to EPA from state agencies. However, some values may be absent due to incomplete reporting, and some values may change due to quality assurance activities. The AQS database is updated by state, local, and tribal organizations who own and submit the data.

Get detailed information about this report, including column descriptions, at https://www.epa.gov/outdoor-air-quality-data/about-air-data-reports#aqidaily

Air Quality Index Daily Values Report Geographic Area: Denver-Aurora-Lakewood, CO Pollutant: Overall Year: 2019

Date

Overall AQI

Value Main

Pollutant

Ozone AQI

Value

PM2.5 AQI

Value

SO2 AQI

Value

NO2 AQI

Value

PM10 AQI

Value

CO AQI

Value

04/27/2019 49 Ozone 49 15 1 30 14 6

04/28/2019 56 PM10 50 31 1 36 56 6

04/29/2019 45 Ozone 45 25 0 26 10 5

04/30/2019 51 Ozone 51 49 0 30 10 7

05/01/2019 58 Ozone 58 36 1 21 7 6

05/02/2019 58 Ozone 58 27 1 45 17 6

05/03/2019 80 Ozone 80 28 3 40 31 7

05/04/2019 80 Ozone 80 29 4 39 26 6

05/05/2019 87 Ozone 87 24 3 33 22 6

05/06/2019 64 Ozone 64 54 1 29 35 6

05/07/2019 51 Ozone 51 39 1 25 12 8

05/08/2019 45 Ozone 45 20 1 18 4 6

05/09/2019 43 Ozone 43 23 0 28 9 5

05/10/2019 58 PM2.5 49 58 1 34 24 7

05/11/2019 51 Ozone 51 25 3 30 18 7

05/12/2019 74 Ozone 74 25 3 38 19 5

05/13/2019 74 Ozone 74 35 6 45 41 7

05/14/2019 80 Ozone 80 40 17 43 50 6

05/15/2019 61 Ozone 61 31 1 38 40 5

05/16/2019 77 Ozone 77 36 9 44 51 7

05/17/2019 71 SO2 64 35 71 39 35 6

05/18/2019 49 Ozone 49 15 3 33 18 5

05/19/2019 45 Ozone 45 24 0 18 6 6

05/20/2019 44 Ozone 44 14 1 23 3 5

05/21/2019 46 Ozone 46 15 1 20 10 6

05/22/2019 54 Ozone 54 30 1 27 18 6

05/23/2019 84 Ozone 84 42 3 35 20 8

05/24/2019 71 Ozone 71 35 3 43 38 8

05/25/2019 67 Ozone 67 25 0 32 26 6

Page 6 of 13 Generated:September 23, 2020

Source: U.S. EPA AirData <https://www.epa.gov/air-data>

AirData reports are produced from a direct query of the AQS Data Mart. The data represent the best and most recent information available to EPA from state agencies. However, some values may be absent due to incomplete reporting, and some values may change due to quality assurance activities. The AQS database is updated by state, local, and tribal organizations who own and submit the data.

Get detailed information about this report, including column descriptions, at https://www.epa.gov/outdoor-air-quality-data/about-air-data-reports#aqidaily

Air Quality Index Daily Values Report Geographic Area: Denver-Aurora-Lakewood, CO Pollutant: Overall Year: 2019

Date

Overall AQI

Value Main

Pollutant

Ozone AQI

Value

PM2.5 AQI

Value

SO2 AQI

Value

NO2 AQI

Value

PM10 AQI

Value

CO AQI

Value

05/26/2019 64 Ozone 64 39 1 23 30 6

05/27/2019 71 Ozone 71 24 0 16 22 5

05/28/2019 87 Ozone 87 16 0 31 12 6

05/29/2019 77 Ozone 77 25 1 33 14 3

05/30/2019 87 Ozone 87 52 1 41 31 6

05/31/2019 71 Ozone 71 31 3 39 34 6

06/01/2019 90 Ozone 90 31 1 38 28 6

06/02/2019 74 Ozone 74 27 1 29 19 6

06/03/2019 61 Ozone 61 30 1 36 28 6

06/04/2019 71 Ozone 71 33 3 36 34 6

06/05/2019 105 Ozone 105 30 1 38 32 5

06/06/2019 101 Ozone 101 23 3 39 26 5

06/07/2019 64 Ozone 64 34 3 46 44 7

06/08/2019 61 Ozone 61 32 1 36 28 7

06/09/2019 64 Ozone 64 17 0 23 12 5

06/10/2019 74 Ozone 74 23 1 29 26 6

06/11/2019 50 Ozone 50 33 3 44 44 6

06/12/2019 67 Ozone 67 20 0 18 19 3

06/13/2019 64 PM10 50 38 1 39 64 5

06/14/2019 74 Ozone 74 38 3 42 37 6

06/15/2019 74 Ozone 74 26 1 32 21 6

06/16/2019 87 Ozone 87 28 1 32 16 6

06/17/2019 58 Ozone 58 53 1 37 19 6

06/18/2019 58 Ozone 58 26 0 29 21 6

06/19/2019 80 Ozone 80 25 1 35 35 6

06/20/2019 54 Ozone 54 38 1 33 32 6

06/21/2019 47 Ozone 47 22 1 32 16 5

06/22/2019 54 Ozone 54 17 0 24 6 6

06/23/2019 44 Ozone 44 16 0 28 9 5

Page 7 of 13 Generated:September 23, 2020

Source: U.S. EPA AirData <https://www.epa.gov/air-data>

AirData reports are produced from a direct query of the AQS Data Mart. The data represent the best and most recent information available to EPA from state agencies. However, some values may be absent due to incomplete reporting, and some values may change due to quality assurance activities. The AQS database is updated by state, local, and tribal organizations who own and submit the data.

Get detailed information about this report, including column descriptions, at https://www.epa.gov/outdoor-air-quality-data/about-air-data-reports#aqidaily

Air Quality Index Daily Values Report Geographic Area: Denver-Aurora-Lakewood, CO Pollutant: Overall Year: 2019

Date

Overall AQI

Value Main

Pollutant

Ozone AQI

Value

PM2.5 AQI

Value

SO2 AQI

Value

NO2 AQI

Value

PM10 AQI

Value

CO AQI

Value

06/24/2019 61 Ozone 61 26 3 35 33 6

06/25/2019 58 Ozone 58 24 1 49 31 5

06/26/2019 64 Ozone 64 44 3 42 48 6

06/27/2019 115 Ozone 115 38 3 42 47 6

06/28/2019 90 Ozone 90 38 1 40 50 6

06/29/2019 67 Ozone 67 26 3 29 25 6

06/30/2019 54 Ozone 54 31 3 25 26 6

07/01/2019 51 Ozone 51 39 1 31 31 6

07/02/2019 67 Ozone 67 30 1 32 22 5

07/03/2019 67 Ozone 67 26 3 41 24 5

07/04/2019 87 Ozone 87 74 1 35 52 7

07/05/2019 80 Ozone 80 55 1 31 27 7

07/06/2019 77 Ozone 77 36 1 34 23 5

07/07/2019 64 Ozone 64 26 1 24 19 5

07/08/2019 49 Ozone 49 36 1 40 32 5

07/09/2019 64 Ozone 64 26 4 38 31 5

07/10/2019 100 Ozone 100 30 1 30 24 5

07/11/2019 77 Ozone 77 40 1 44 52 6

07/12/2019 87 Ozone 87 31 3 43 39 6

07/13/2019 101 Ozone 101 36 3 47 46 7

07/14/2019 51 Ozone 51 26 1 28 30 6

07/15/2019 58 Ozone 58 30 3 41 45 6

07/16/2019 80 Ozone 80 27 4 38 32 7

07/17/2019 101 Ozone 101 28 4 43 35 5

07/18/2019 105 Ozone 105 33 4 38 41 6

07/19/2019 129 Ozone 129 28 4 45 48 6

07/20/2019 54 PM10 51 46 4 42 54 6

07/21/2019 101 Ozone 101 33 1 24 31 5

07/22/2019 105 Ozone 105 44 1 36 28 6

Page 8 of 13 Generated:September 23, 2020

Source: U.S. EPA AirData <https://www.epa.gov/air-data>

AirData reports are produced from a direct query of the AQS Data Mart. The data represent the best and most recent information available to EPA from state agencies. However, some values may be absent due to incomplete reporting, and some values may change due to quality assurance activities. The AQS database is updated by state, local, and tribal organizations who own and submit the data.

Get detailed information about this report, including column descriptions, at https://www.epa.gov/outdoor-air-quality-data/about-air-data-reports#aqidaily

Air Quality Index Daily Values Report Geographic Area: Denver-Aurora-Lakewood, CO Pollutant: Overall Year: 2019

Date

Overall AQI

Value Main

Pollutant

Ozone AQI

Value

PM2.5 AQI

Value

SO2 AQI

Value

NO2 AQI

Value

PM10 AQI

Value

CO AQI

Value

07/23/2019 133 Ozone 133 46 3 44 37 6

07/24/2019 105 Ozone 105 30 4 42 42 6

07/25/2019 71 Ozone 71 30 3 42 43 6

07/26/2019 84 Ozone 84 32 1 39 39 6

07/27/2019 74 Ozone 74 25 1 27 39 6

07/28/2019 54 Ozone 54 26 4 30 37 6

07/29/2019 77 Ozone 77 32 3 33 45 5

07/30/2019 90 Ozone 90 41 3 37 51 6

07/31/2019 126 Ozone 126 45 6 38 60 6

08/01/2019 84 Ozone 84 46 1 45 49 8

08/02/2019 90 Ozone 90 48 1 34 49 6

08/03/2019 90 Ozone 90 30 4 41 42 6

08/04/2019 74 Ozone 74 20 3 25 34 5

08/05/2019 90 Ozone 90 24 3 39 45 5

08/06/2019 115 Ozone 115 32 3 51 50 6

08/07/2019 154 Ozone 154 51 3 45 51 6

08/08/2019 101 Ozone 101 40 1 42 44 6

08/09/2019 71 Ozone 71 28 1 35 28 5

08/10/2019 80 Ozone 80 24 0 33 27 6

08/11/2019 50 Ozone 50 22 1 32 13 6

08/12/2019 87 Ozone 87 23 1 32 30 6

08/13/2019 93 Ozone 93 39 1 42 48 5

08/14/2019 87 Ozone 87 33 1 34 53 6

08/15/2019 62 PM10 51 45 3 46 62 7

08/16/2019 147 Ozone 147 54 1 70 52 6

08/17/2019 50 Ozone 50 30 1 36 44 5

08/18/2019 119 Ozone 119 45 1 42 51 8

08/19/2019 100 Ozone 100 52 3 50 59 8

08/20/2019 90 Ozone 90 51 4 42 68 6

Page 9 of 13 Generated:September 23, 2020

Source: U.S. EPA AirData <https://www.epa.gov/air-data>

AirData reports are produced from a direct query of the AQS Data Mart. The data represent the best and most recent information available to EPA from state agencies. However, some values may be absent due to incomplete reporting, and some values may change due to quality assurance activities. The AQS database is updated by state, local, and tribal organizations who own and submit the data.

Get detailed information about this report, including column descriptions, at https://www.epa.gov/outdoor-air-quality-data/about-air-data-reports#aqidaily

Air Quality Index Daily Values Report Geographic Area: Denver-Aurora-Lakewood, CO Pollutant: Overall Year: 2019

Date

Overall AQI

Value Main

Pollutant

Ozone AQI

Value

PM2.5 AQI

Value

SO2 AQI

Value

NO2 AQI

Value

PM10 AQI

Value

CO AQI

Value

08/21/2019 115 Ozone 115 43 1 39 55 6

08/22/2019 87 Ozone 87 39 1 46 44 6

08/23/2019 80 Ozone 80 33 1 53 44 8

08/24/2019 84 Ozone 84 33 3 50 35 6

08/25/2019 48 Ozone 48 28 1 42 32 7

08/26/2019 115 Ozone 115 25 1 36 36 7

08/27/2019 80 Ozone 80 34 0 31 31 7

08/28/2019 77 Ozone 77 34 3 56 52 6

08/29/2019 64 Ozone 64 37 3 46 57 8

08/30/2019 112 Ozone 112 52 1 45 51 8

08/31/2019 84 Ozone 84 44 3 28 26 7

09/01/2019 80 Ozone 80 35 1 40 23 7

09/02/2019 64 Ozone 64 28 3 45 23 8

09/03/2019 67 Ozone 67 39 1 30 57 8

09/04/2019 64 Ozone 64 37 3 38 52 7

09/05/2019 77 Ozone 77 34 1 36 54 7

09/06/2019 67 Ozone 67 46 3 35 34 8

09/07/2019 87 Ozone 87 28 1 41 30 5

09/08/2019 58 Ozone 58 25 1 30 13 6

09/09/2019 90 Ozone 90 42 3 31 22 7

09/10/2019 112 Ozone 112 49 1 47 45 7

09/11/2019 77 Ozone 77 53 3 46 52 9

09/12/2019 67 Ozone 67 29 1 35 33 6

09/13/2019 87 Ozone 87 43 1 64 47 11

09/14/2019 84 Ozone 84 30 4 44 44 13

09/15/2019 97 Ozone 97 30 1 57 28 9

09/16/2019 77 Ozone 77 50 3 51 58 8

09/17/2019 55 PM10 49 35 4 46 55 8

09/18/2019 48 Ozone 48 36 3 39 45 7

Page 10 of 13 Generated:September 23, 2020

Source: U.S. EPA AirData <https://www.epa.gov/air-data>

AirData reports are produced from a direct query of the AQS Data Mart. The data represent the best and most recent information available to EPA from state agencies. However, some values may be absent due to incomplete reporting, and some values may change due to quality assurance activities. The AQS database is updated by state, local, and tribal organizations who own and submit the data.

Get detailed information about this report, including column descriptions, at https://www.epa.gov/outdoor-air-quality-data/about-air-data-reports#aqidaily

Air Quality Index Daily Values Report Geographic Area: Denver-Aurora-Lakewood, CO Pollutant: Overall Year: 2019

Date

Overall AQI

Value Main

Pollutant

Ozone AQI

Value

PM2.5 AQI

Value

SO2 AQI

Value

NO2 AQI

Value

PM10 AQI

Value

CO AQI

Value

09/19/2019 77 Ozone 77 44 3 46 59 9

09/20/2019 56 PM10 46 29 1 38 56 6

09/21/2019 57 PM10 49 29 3 35 57 6

09/22/2019 50 Ozone 50 19 0 34 13 5

09/23/2019 51 PM10 43 40 3 45 51 9

09/24/2019 55 PM10 51 43 4 42 55 8

09/25/2019 58 Ozone 58 46 3 46 57 8

09/26/2019 55 PM10 46 39 4 51 55 8

09/27/2019 45 PM10 44 32 1 34 45 7

09/28/2019 51 Ozone 51 32 1 29 30 6

09/29/2019 44 Ozone 44 28 6 23 23 5

09/30/2019 46 Ozone 46 27 1 33 23 6

10/01/2019 44 Ozone 44 30 1 15 17 6

10/02/2019 58 Ozone 58 30 1 25 15 6

10/03/2019 64 Ozone 64 54 1 39 33 8

10/04/2019 60 PM2.5 45 60 3 53 53 11

10/05/2019 64 Ozone 64 25 1 30 33 10

10/06/2019 49 Ozone 49 18 0 36 22 5

10/07/2019 57 NO2 54 47 3 57 53 10

10/08/2019 61 Ozone 61 52 4 57 58 10

10/09/2019 65 PM10 43 48 4 43 65 9

10/10/2019 37 Ozone 37 23 0 30 9 6

10/11/2019 50 Ozone 50 44 1 47 20 7

10/12/2019 50 Ozone 50 40 3 50 27 9

10/13/2019 52 NO2 50 25 1 52 26 11

10/14/2019 52 NO2 51 43 4 52 49 13

10/15/2019 44 Ozone 44 38 3 42 38 7

10/16/2019 58 PM10 44 56 6 50 58 11

10/17/2019 52 PM10 44 45 3 46 52 11

Page 11 of 13 Generated:September 23, 2020

Source: U.S. EPA AirData <https://www.epa.gov/air-data>

AirData reports are produced from a direct query of the AQS Data Mart. The data represent the best and most recent information available to EPA from state agencies. However, some values may be absent due to incomplete reporting, and some values may change due to quality assurance activities. The AQS database is updated by state, local, and tribal organizations who own and submit the data.

Get detailed information about this report, including column descriptions, at https://www.epa.gov/outdoor-air-quality-data/about-air-data-reports#aqidaily

Air Quality Index Daily Values Report Geographic Area: Denver-Aurora-Lakewood, CO Pollutant: Overall Year: 2019

Date

Overall AQI

Value Main

Pollutant

Ozone AQI

Value

PM2.5 AQI

Value

SO2 AQI

Value

NO2 AQI

Value

PM10 AQI

Value

CO AQI

Value

10/18/2019 55 PM2.5 44 55 4 52 55 10

10/19/2019 44 Ozone 44 24 6 44 31 7

10/20/2019 52 PM10 42 31 1 36 52 8

10/21/2019 41 Ozone 41 31 3 40 37 6

10/22/2019 53 PM10 43 40 1 41 53 6

10/23/2019 41 Ozone 41 20 1 39 21 5

10/24/2019 42 Ozone 42 39 0 37 11 7

10/25/2019 49 NO2 43 29 1 49 31 7

10/26/2019 53 PM10 46 40 3 40 53 7

10/27/2019 37 Ozone 37 17 0 15 6 3

10/28/2019 41 Ozone 41 34 0 40 9 6

10/29/2019 54 PM2.5 37 54 0 33 7 5

10/30/2019 50 Ozone 50 44 1 42 13 5

10/31/2019 79 NO2 58 65 9 79 37 14

11/01/2019 77 NO2 48 61 7 77 21 17

11/02/2019 79 PM2.5 47 79 4 62 42 15

11/03/2019 63 PM2.5 44 63 6 56 27 16

11/04/2019 52 PM2.5 41 52 1 42 27 8

11/05/2019 90 PM2.5 44 90 4 64 63 17

11/06/2019 47 NO2 44 46 4 47 45 17

11/07/2019 55 PM2.5 43 55 3 36 30 13

11/08/2019 67 PM10 43 62 6 48 67 15

11/09/2019 54 PM10 45 38 3 54 54 9

11/10/2019 44 Ozone 44 30 4 40 35 9

11/11/2019 45 PM2.5 45 45 1 32 19 9

11/12/2019 58 PM2.5 44 58 6 54 52 14

11/13/2019 43 Ozone 43 20 1 39 25 14

11/14/2019 47 NO2 46 45 3 47 36 8

11/15/2019 83 PM10 42 69 7 51 83 14

Page 12 of 13 Generated:September 23, 2020

Source: U.S. EPA AirData <https://www.epa.gov/air-data>

AirData reports are produced from a direct query of the AQS Data Mart. The data represent the best and most recent information available to EPA from state agencies. However, some values may be absent due to incomplete reporting, and some values may change due to quality assurance activities. The AQS database is updated by state, local, and tribal organizations who own and submit the data.

Get detailed information about this report, including column descriptions, at https://www.epa.gov/outdoor-air-quality-data/about-air-data-reports#aqidaily

Air Quality Index Daily Values Report Geographic Area: Denver-Aurora-Lakewood, CO Pollutant: Overall Year: 2019

Date

Overall AQI

Value Main

Pollutant

Ozone AQI

Value

PM2.5 AQI

Value

SO2 AQI

Value

NO2 AQI

Value

PM10 AQI

Value

CO AQI

Value

11/16/2019 52 PM10 45 37 1 40 52 14

11/17/2019 47 NO2 46 24 1 47 17 6

11/18/2019 43 NO2 42 26 4 43 38 7

11/19/2019 69 PM10 43 58 6 51 69 15

11/20/2019 60 PM10 39 53 7 45 60 15

11/21/2019 40 Ozone 40 29 0 24 8 6

11/22/2019 54 PM2.5 45 54 3 32 17 11

11/23/2019 49 PM2.5 45 49 4 47 38 13

11/24/2019 47 Ozone 47 22 3 45 27 13

11/25/2019 47 Ozone 47 35 4 47 21 8

11/26/2019 45 NO2 44 23 1 45 8 7

11/27/2019 64 PM2.5 44 64 4 55 22 10

11/28/2019 87 PM2.5 47 87 3 58 24 10

11/29/2019 86 PM2.5 47 86 1 46 22 10

11/30/2019 47 Ozone 47 33 3 47 11 6

12/01/2019 63 NO2 48 54 7 63 20 18

12/02/2019 83 NO2 46 74 9 83 43 24

12/03/2019 60 NO2 44 38 6 60 27 15

12/04/2019 70 PM2.5 44 70 4 65 56 16

12/05/2019 57 PM2.5 37 57 6 54 25 15

12/06/2019 71 NO2 43 64 6 71 31 17

12/07/2019 49 NO2 43 47 7 49 25 17

12/08/2019 47 Ozone 47 20 3 34 15 10

12/09/2019 45 Ozone 45 37 3 38 19 7

12/10/2019 71 PM2.5 47 71 4 48 63 11

12/11/2019 62 PM10 46 61 6 53 62 14

12/12/2019 48 NO2 44 38 4 48 44 10

12/13/2019 45 NO2 43 29 1 45 41 8

12/14/2019 42 Ozone 42 37 1 41 19 7

Page 13 of 13 Generated:September 23, 2020

Source: U.S. EPA AirData <https://www.epa.gov/air-data>

AirData reports are produced from a direct query of the AQS Data Mart. The data represent the best and most recent information available to EPA from state agencies. However, some values may be absent due to incomplete reporting, and some values may change due to quality assurance activities. The AQS database is updated by state, local, and tribal organizations who own and submit the data.

Get detailed information about this report, including column descriptions, at https://www.epa.gov/outdoor-air-quality-data/about-air-data-reports#aqidaily

Air Quality Index Daily Values Report Geographic Area: Denver-Aurora-Lakewood, CO Pollutant: Overall Year: 2019

Date

Overall AQI

Value Main

Pollutant

Ozone AQI

Value

PM2.5 AQI

Value

SO2 AQI

Value

NO2 AQI

Value

PM10 AQI

Value

CO AQI

Value

12/15/2019 50 PM2.5 42 50 1 40 14 7

12/16/2019 42 Ozone 42 40 0 39 27 6

12/17/2019 51 PM2.5 43 51 3 49 38 7

12/18/2019 59 PM10 44 56 6 50 59 17

12/19/2019 66 PM10 45 61 10 63 66 19

12/20/2019 60 PM10 44 56 6 52 60 15

12/21/2019 53 NO2 49 45 6 53 47 19

12/22/2019 55 NO2 51 48 6 55 44 22

12/23/2019 79 PM10 48 69 6 57 79 22

12/24/2019 57 NO2 46 54 6 57 48 15

12/25/2019 44 Ozone 44 30 4 42 19 10

12/26/2019 55 PM2.5 45 55 3 44 22 10

12/27/2019 77 PM2.5 44 77 3 38 44 9

12/28/2019 40 Ozone 40 38 0 33 9 6

12/29/2019 44 Ozone 44 25 1 44 9 6

12/30/2019 58 NO2 46 40 4 58 22 10

12/31/2019 58 PM2.5 47 58 6 56 30 19