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Detailed Air Quality Summary for 01/16/18 (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 [+] ASP Good 34 Ozone 37 PPB 8-hour 4:00 PM
Ft. Collins - Greeley [+] GREH Good 33 Particulate < 2.5 micrometers 8 µg/m3 24-hour 4:00 PM
Colorado Springs [+] ACAD Good 28 Ozone 30 PPB 8-hour 4:00 PM
Grand Junction [+] GJPB Good 15 Particulate < 2.5 micrometers 4 µg/m3 24-hour 4:00 PM
Colorado River Valley [+] RIFL Good 11 Particulate < 2.5 micrometers 3 µg/m3 24-hour 4:00 PM
Four Corners       Valid data unavailable      
Other [+] DELT Good 40 Particulate < 2.5 micrometers 10 µg/m3 24-hour 4:00 PM

Area Site Visibility Max VSI 4-hour Average
(1/km)
Beta Extinction
(1/km)
Time *
(MST)
Denver DES Good 14 0.022 0.023 4:00 PM

Daily Highs:

Area Site Air Quality Max AQI Pollutant Conc. Period Time *
(MST)
Denver
[expand +]
I25GLO Good 45 Nitrogen Dioxide 48 PPB 1-hour 3 AM
Ft. Collins - Greeley
[expand +]
GREH Good 33 Particulate < 2.5 micrometers 8 µg/m3 24-hour 4 PM
Colorado Springs
[expand +]
MAN Good 29 Ozone 31 PPB 8-hour 1 AM
Grand Junction
[expand +]
PAL Good 32 Ozone 35 PPB 8-hour 1 AM
Colorado River Valley
[expand +]
RIFL Good 17 Particulate < 2.5 micrometers 4 µg/m3 24-hour 2 AM
Four Corners
[expand +]
CTZ Good 23 Ozone 25 PPB 8-hour 2 AM
Other
[expand +]
DELT Good 45 Particulate < 2.5 micrometers 11 µg/m3 24-hour 3 AM

Area Site Visibility Max VSI 4-hour Average
(1/km)
Beta Extinction
(1/km)
Time *
(MST)
Denver DES Moderate 59 0.055 0.039 12 PM

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