State of Colorado air quality
Updated 23/10, 23:00
The data may not be up to date.
Current AQI
US EPA scale · observed at 23:00
34
GoodAir quality is good; enjoy outdoor activities.
Pollutants
Current concentrations, µg/m³
| Pollutant | Concentration | Description |
|---|---|---|
| PM2.5 | 5,2 µg/m³ | Fine particles ≤ 2.5 µm |
| PM10 | 5,3 µg/m³ | Particles ≤ 10 µm |
| O₃ | 34 µg/m³ | Ozone |
| NO₂ | 25,6 µg/m³ | Nitrogen dioxide |
| SO₂ | 0,6 µg/m³ | Sulphur dioxide |
| CO | 259 µg/m³ | Carbon monoxide |
AQI, next 9 hours
Show data table
| Time | AQI | Level |
|---|---|---|
| 14:00 | 29 | Good |
| 15:00 | 30 | Good |
| 16:00 | 31 | Good |
| 17:00 | 32 | Good |
| 18:00 | 31 | Good |
| 19:00 | 31 | Good |
| 20:00 | 30 | Good |
| 21:00 | 29 | Good |
| 22:00 | 28 | Good |