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Detailed Air Quality Summary for 05/23/18 (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
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LNGM Good 46 Particulate < 2.5 micrometers 11 µg/m3 24-hour 7 AM
Ft. Collins - Greeley
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GREH Good 32 Particulate < 2.5 micrometers 8 µg/m3 24-hour 7 AM
Colorado Springs
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ACAD Good 30 Ozone 32 PPB 8-hour 7 AM
Grand Junction
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PAL Good 27 Ozone 29 PPB 8-hour 7 AM
Colorado River Valley
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RIFLO3 Good 18 Ozone 19 PPB 8-hour 7 AM
Four Corners
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CTZ Good 23 Ozone 25 PPB 8-hour 7 AM
Other
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ASPN Good 27 Ozone 29 PPB 8-hour 7 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
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AURE Good 50 Ozone 54 PPB 8-hour 1 AM
Ft. Collins - Greeley
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GRET Good 47 Ozone 51 PPB 8-hour 1 AM
Colorado Springs
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ACAD Good 47 Ozone 51 PPB 8-hour 1 AM
Grand Junction
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PAL Good 41 Ozone 44 PPB 8-hour 1 AM
Colorado River Valley
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RIFLO3 Good 31 Ozone 34 PPB 8-hour 1 AM
Four Corners
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CTZ Good 34 Ozone 37 PPB 8-hour 1 AM
Other
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ELK Good 38 Ozone 41 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.