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Detailed Air Quality Summary for 11/24/17 (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 [+] RFN Good 32 Ozone 35 PPB 8-hour 9:00 AM
Ft. Collins - Greeley [+] GREH Good 47 Particulate < 2.5 micrometers 11 µg/m3 24-hour 9:00 AM
Colorado Springs [+] MAN Good 28 Ozone 30 PPB 8-hour 9:00 AM
Grand Junction [+] GJPB Good 28 Particulate < 2.5 micrometers 7 µg/m3 24-hour 9:00 AM
Colorado River Valley [+] RIFL Good 14 Particulate < 2.5 micrometers 3 µg/m3 24-hour 9:00 AM
Four Corners [+] CTZ Good 13 Ozone 14 PPB 8-hour 9:00 AM
Other [+] DELT Good 29 Particulate < 2.5 micrometers 7 µg/m3 24-hour 9:00 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 +]
RFN Good 33 Ozone 36 PPB 8-hour 8 AM
Ft. Collins - Greeley
[expand +]
GREH Moderate 51 Particulate < 2.5 micrometers 12 µg/m3 24-hour 1 AM
Colorado Springs
[expand +]
ACAD Good 30 Ozone 32 PPB 8-hour 6 AM
Grand Junction
[expand +]
GJPB Good 28 Particulate < 2.5 micrometers 7 µg/m3 24-hour 8 AM
Colorado River Valley
[expand +]
RIFL Good 18 Particulate < 2.5 micrometers 4 µg/m3 24-hour 1 AM
Four Corners
[expand +]
CTZ Good 13 Ozone 14 PPB 8-hour 5 AM
Other
[expand +]
DELT Good 31 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.