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Detailed Air Quality Summary for 10/21/18 (Today)

Air Quality Forecasts and Advisories & Colorado Smoke Outlook
Learn more about monitoring sites: site descriptions and
real-time monitoring map

All data are collected real-time and have not been corrected nor validated.
Current Air Quality

Current Hour:

Area Site Air Quality Max AQI Pollutant Conc. Period Time *
(MST)
Denver
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ADM Good 40 Particulate < 2.5 micrometers 10 µg/m3 24-hour 8 AM
Ft. Collins - Greeley
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GREH Good 43 Particulate < 2.5 micrometers 10 µg/m3 24-hour 8 AM
Colorado Springs
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MAN Good 41 Ozone 44 PPB 8-hour 8 AM
Grand Junction
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GJPB Good 15 Particulate < 2.5 micrometers 4 µg/m3 24-hour 8 AM
Colorado River Valley
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RIFL Unhealthy 151 Particulate < 2.5 micrometers 56 µg/m3 24-hour 8 AM
Four Corners
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CTZ Good 31 Ozone 34 PPB 8-hour 8 AM
Other
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ASPN Good 36 Ozone 39 PPB 8-hour 8 AM

Area Site Visibility Max VSI 4-hour Average
(1/km)
Beta Extinction
(1/km)
Time *
(MST)
No valid VSI calculations found (12pm - 4pm)

Daily Highs:

Area Site Air Quality Max AQI Pollutant Conc. Period Time *
(MST)
Denver
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ADM Moderate 51 Particulate < 2.5 micrometers 12 µg/m3 24-hour 4 AM
Ft. Collins - Greeley
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GREH Good 43 Particulate < 2.5 micrometers 10 µg/m3 24-hour 7 AM
Colorado Springs
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MAN Good 41 Ozone 44 PPB 8-hour 8 AM
Grand Junction
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PAL Good 27 Ozone 29 PPB 8-hour 1 AM
Colorado River Valley
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RIFL Unhealthy 151 Particulate < 2.5 micrometers 56 µg/m3 24-hour 8 AM
Four Corners
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CTZ Good 31 Ozone 33 PPB 8-hour 6 AM
Other
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ASPN Good 36 Ozone 39 PPB 8-hour 8 AM

Area Site Visibility Max VSI 4-hour Average
(1/km)
Beta Extinction
(1/km)
Time *
(MST)
No valid VSI calculations found (12pm - 4pm)

* All data are reported in Mountain Standard Time (MST). During daylight savings time add one hour to the reported hour.