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Detailed Air Quality Summary for 07/31/14 (Today)

Air Quality Forecasts and Advisories & Colorado Smoke Outlook
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 Air Quality

Current Hour:

Area Site Air Quality Max AQI Pollutant Conc. Period Time *
(MST)
Denver [+] I-25 Good 41 Particulate < 2.5 micrometers 10 µg/m3 24-hour 4 AM
Ft. Collins - Greeley [+] GRET Good 17 Ozone 20 PPB 8-hour 4 AM
Colorado Springs [+] ACAD Good 25 Ozone 29 PPB 8-hour 4 AM
Grand Junction [+] PAL Good 30 Ozone 35 PPB 8-hour 4 AM
Colorado River Valley [+] RIFLO3 Good 19 Ozone 22 PPB 8-hour 4 AM
Four Corners [+] CTZ Good 22 Ozone 26 PPB 8-hour 4 AM
Other [+] DELT Good 32 Particulate < 2.5 micrometers 8 µg/m3 24-hour 4 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 [+] I-25 Good 41 Particulate < 2.5 micrometers 10 µg/m3 24-hour 4 AM
Ft. Collins - Greeley [+] GRET Good 23 Ozone 27 PPB 8-hour 1 AM
Colorado Springs [+] MAN Good 30 Ozone 35 PPB 8-hour 1 AM
Grand Junction [+] PAL Good 36 Ozone 43 PPB 8-hour 1 AM
Colorado River Valley [+] RIFLO3 Good 25 Ozone 30 PPB 8-hour 1 AM
Four Corners [+] CTZ Good 29 Ozone 34 PPB 8-hour 1 AM
Other [+] DELT Good 33 Particulate < 2.5 micrometers 8 µg/m3 24-hour 1 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.