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Detailed Air Quality Summary for 11/20/17 (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 [+] ADM Moderate 58 Particulate < 10 micrometers 69 µg/m3 24-hour 3:00 PM
Ft. Collins - Greeley [+] FTCW Good 37 Ozone 40 PPB 8-hour 3:00 PM
Colorado Springs [+] ACAD Good 43 Ozone 46 PPB 8-hour 3:00 PM
Grand Junction [+] GJPB Good 27 Particulate < 2.5 micrometers 7 µg/m3 24-hour 3:00 PM
Colorado River Valley [+] RIFL Good 17 Particulate < 2.5 micrometers 4 µg/m3 24-hour 3:00 PM
Four Corners [+] CTZ Good 29 Ozone 31 PPB 8-hour 3:00 PM
Other [+] DELT Good 36 Particulate < 2.5 micrometers 9 µg/m3 24-hour 3:00 PM

Area Site Visibility Max VSI 4-hour Average
(1/km)
Beta Extinction
(1/km)
Time *
(MST)
Denver DES Good 25 0.030 0.026 3:00 PM

Daily Highs:

Area Site Air Quality Max AQI Pollutant Conc. Period Time *
(MST)
Denver
[expand +]
I25GLO Moderate 60 Nitrogen Dioxide 62 PPB 1-hour 8 AM
Ft. Collins - Greeley
[expand +]
FTCW Good 37 Ozone 40 PPB 8-hour 2 PM
Colorado Springs
[expand +]
ACAD Good 44 Ozone 48 PPB 8-hour 3 AM
Grand Junction
[expand +]
GJPB Good 27 Particulate < 2.5 micrometers 6 µg/m3 24-hour 1 PM
Colorado River Valley
[expand +]
RIFL Good 18 Particulate < 2.5 micrometers 4 µg/m3 24-hour 11 AM
Four Corners
[expand +]
CTZ Good 29 Ozone 31 PPB 8-hour 3 PM
Other
[expand +]
DELT Good 38 Particulate < 2.5 micrometers 9 µg/m3 24-hour 10 AM

Area Site Visibility Max VSI 4-hour Average
(1/km)
Beta Extinction
(1/km)
Time *
(MST)
Denver DES Good 30 0.034 0.031 12 PM

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