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| 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. |
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Current Hour:
| Area | Site | Air Quality | Max AQI | Pollutant | Conc. | Period | Time * (MST) |
| Area | Site | Visibility | Max VSI | 4-hour Average (1/km) |
Beta Extinction (1/km) |
Time * (MST) |
Daily Highs:
| Area | Site | Air Quality | Max AQI | Pollutant | Conc. | Period | Time * (MST) |
| Denver METRO [expand +] |
ADB | Moderate | 56 | Particulate < 2.5 micrometers | 11 µg/m3 | 24-hour | 5 PM |
| Ft. Collins - Greeley [expand +] |
PMS | Moderate | 61 | Particulate < 2.5 micrometers | 14 µg/m3 | 24-hour | 8 PM |
| Colorado Springs [expand +] |
MAN | Good | 40 | Ozone | 43 PPB | 8-hour | 4 PM |
| Grand Junction [expand +] |
GJPB | Good | 35 | Particulate < 2.5 micrometers | 6 µg/m3 | 24-hour | 11 PM |
| Pueblo [expand +] |
CAN | Good | 33 | Particulate < 2.5 micrometers | 5 µg/m3 | 24-hour | 1 AM |
| Colorado River Valley [expand +] |
RIFL | Good | 42 | Particulate < 2.5 micrometers | 7 µg/m3 | 24-hour | 12 PM |
| Four Corners [expand +] |
CTZ | Good | 25 | Ozone | 27 PPB | 8-hour | 5 PM |
| Steamboat Springs [expand +] |
SSMB | Good | 36 | Particulate < 2.5 micrometers | 6 µg/m3 | 24-hour | 8 PM |
| Aspen [expand +] |
ASPN | Good | 36 | Ozone | 39 PPB | 8-hour | 5 AM |
| Other [expand +] |
ALA | Moderate | 53 | Particulate < 2.5 micrometers | 10 µg/m3 | 24-hour | 7 AM |
| Area | Site | Visibility | Max VSI | 4-hour Average (1/km) |
Beta Extinction (1/km) |
Time * (MST) |
* All data are reported in Mountain Standard Time (MST). During daylight savings time add one hour to the reported hour.