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Detailed Air Quality Summary for 07/18/18 (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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HLD Unhealthy for Sensitive Groups 118 Ozone 76 PPB 8-hour 5 PM
Ft. Collins - Greeley
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FTCW Moderate 87 Ozone 66 PPB 8-hour 5 PM
Colorado Springs
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ACAD Moderate 90 Ozone 67 PPB 8-hour 5 PM
Grand Junction
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PAL Moderate 54 Ozone 56 PPB 8-hour 5 PM
Colorado River Valley
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RIFLO3 Moderate 58 Ozone 57 PPB 8-hour 5 PM
Four Corners
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CTZ Good 39 Ozone 42 PPB 8-hour 5 PM
Other
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ELK Moderate 67 Ozone 60 PPB 8-hour 5 PM

Area Site Visibility Max VSI 4-hour Average
(1/km)
Beta Extinction
(1/km)
Time *
(MST)

Daily Highs:

Area Site Air Quality Max AQI Pollutant Conc. Period Time *
(MST)
Denver
[expand +]
HLD Unhealthy for Sensitive Groups 118 Ozone 76 PPB 8-hour 5 PM
Ft. Collins - Greeley
[expand +]
FTCW Moderate 87 Ozone 66 PPB 8-hour 5 PM
Colorado Springs
[expand +]
ACAD Moderate 90 Ozone 67 PPB 8-hour 5 PM
Grand Junction
[expand +]
PAL Moderate 54 Ozone 56 PPB 8-hour 5 PM
Colorado River Valley
[expand +]
RIFLO3 Moderate 58 Ozone 57 PPB 8-hour 5 PM
Four Corners
[expand +]
CTZ Good 39 Ozone 42 PPB 8-hour 5 PM
Other
[expand +]
ELK Moderate 67 Ozone 60 PPB 8-hour 5 PM

Area Site Visibility Max VSI 4-hour Average
(1/km)
Beta Extinction
(1/km)
Time *
(MST)
Denver DES Moderate 78 0.065 0.063 11 AM

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