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Detailed Air Quality Summary for 09/26/17 (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 [+] CHAT Good 29 Particulate < 2.5 micrometers 7 µg/m3 24-hour 5:00 AM
Ft. Collins - Greeley [+] GREH Good 13 Particulate < 2.5 micrometers 3 µg/m3 24-hour 5:00 AM
Colorado Springs [+] ACAD Good 17 Ozone 18 PPB 8-hour 5:00 AM
Grand Junction [+] PAL Good 25 Ozone 27 PPB 8-hour 5:00 AM
Colorado River Valley [+] RIFLO3 Good 14 Ozone 15 PPB 8-hour 5:00 AM
Four Corners [+] CTZ Good 21 Ozone 23 PPB 8-hour 5:00 AM
Other [+] DELT Good 32 Particulate < 2.5 micrometers 8 µg/m3 24-hour 5:00 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
[expand +]
CHAT Good 29 Particulate < 2.5 micrometers 7 µg/m3 24-hour 5 AM
Ft. Collins - Greeley
[expand +]
FTCW Good 14 Ozone 15 PPB 8-hour 1 AM
Colorado Springs
[expand +]
ACAD Good 19 Ozone 20 PPB 8-hour 1 AM
Grand Junction
[expand +]
PAL Good 31 Ozone 33 PPB 8-hour 1 AM
Colorado River Valley
[expand +]
RIFLO3 Good 24 Ozone 26 PPB 8-hour 1 AM
Four Corners
[expand +]
CTZ Good 27 Ozone 29 PPB 8-hour 1 AM
Other
[expand +]
DELT Good 32 Particulate < 2.5 micrometers 8 µg/m3 24-hour 2 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.