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Detailed Air Quality Summary for 01/17/18 (Today)

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 Hour:

Area Site Air Quality Max AQI Pollutant Conc. Period Time *
(MST)
Denver [+] CHAT Moderate 94 Particulate < 10 micrometers 141 µg/m3 24-hour 10:00 PM
Ft. Collins - Greeley [+] GREH Moderate 63 Particulate < 2.5 micrometers 18 µg/m3 24-hour 10:00 PM
Colorado Springs [+] MAN Good 34 Ozone 37 PPB 8-hour 10:00 PM
Grand Junction [+] PAL Good 29 Ozone 31 PPB 8-hour 10:00 PM
Colorado River Valley [+] RIFL Good 19 Particulate < 2.5 micrometers 5 µg/m3 24-hour 10:00 PM
Four Corners [+] CTZ Good 17 Ozone 18 PPB 8-hour 10:00 PM
Other [+] ASPN2 Moderate 56 Particulate < 10 micrometers 65 µg/m3 24-hour 10:00 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 +]
CHAT Unhealthy for Sensitive Groups 116 Particulate < 10 micrometers 185 µg/m3 24-hour 6 PM
Ft. Collins - Greeley
[expand +]
GREH Moderate 63 Particulate < 2.5 micrometers 18 µg/m3 24-hour 10 PM
Colorado Springs
[expand +]
MAN Good 41 Ozone 44 PPB 8-hour 4 PM
Grand Junction
[expand +]
PAL Good 31 Ozone 33 PPB 8-hour 9 PM
Colorado River Valley
[expand +]
RIFL Good 26 Particulate < 2.5 micrometers 6 µg/m3 24-hour 12 PM
Four Corners
[expand +]
CTZ Good 26 Ozone 28 PPB 8-hour 5 PM
Other
[expand +]
ASPN2 Moderate 61 Particulate < 10 micrometers 75 µg/m3 24-hour 1 PM

Area Site Visibility Max VSI 4-hour Average
(1/km)
Beta Extinction
(1/km)
Time *
(MST)
Denver DES Poor 127 0.096 0.061 12 PM

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