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Detailed Air Quality Summary for 04/21/14 (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 [+] NREL Good 45 Ozone 53 PPB 8-hour 3 AM
Ft. Collins - Greeley [+] FTCW Good 42 Ozone 50 PPB 8-hour 3 AM
Colorado Springs [+] MAN Good 42 Ozone 50 PPB 8-hour 3 AM
Grand Junction [+] PAL Good 32 Ozone 38 PPB 8-hour 3 AM
Colorado River Valley [+] RIFLO3 Good 23 Ozone 27 PPB 8-hour 3 AM
Four Corners [+] CTZ Good 24 Ozone 28 PPB 8-hour 3 AM
Other [+] ASPN Good 36 Ozone 42 PPB 8-hour 3 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 [+] NREL Good 48 Ozone 57 PPB 8-hour 1 AM
Ft. Collins - Greeley [+] FTCW Good 46 Ozone 54 PPB 8-hour 1 AM
Colorado Springs [+] MAN Good 42 Ozone 50 PPB 8-hour 1 AM
Grand Junction [+] PAL Good 37 Ozone 44 PPB 8-hour 1 AM
Colorado River Valley [+] RIFLO3 Good 29 Ozone 34 PPB 8-hour 1 AM
Four Corners [+] CTZ Good 29 Ozone 34 PPB 8-hour 1 AM
Other [+] ASPN Good 39 Ozone 46 PPB 8-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.

Colorado Department of Public Health & Environment/APCD/Technical Services Program
visit us at: http://www.colorado.gov/airquality - all data are preliminary