Air quality in United States
Air quality in Idaho today
Updated
Good: average US AQI 30 across 11 cities in Idaho Worst now: Pocatello (34); cleanest: Post Falls (27).
Live US AQI, PM2.5 and ozone for cities across Idaho, compared with the United States average.
- Average US AQI
- 30 Good
- United States average
- 51 747 cities
- Most polluted now
- Pocatello AQI 34
- Cleanest now
- Post Falls AQI 27
- Cities above 100
- 0
Air quality in Idaho today
Right now the modelled air quality in Idaho averages a US AQI of 30 (Good) across the 11 cities we track. By category: 11 Good (of 11).
That is 21 points cleaner than the United States average of 51, ranking 5 of 51 states from cleanest to most polluted.
Pocatello has the worst air at 34 (PM2.5 4.6 µg/m³), and Post Falls the cleanest at 27. No tracked city is above 100, so no group needs to change plans.
Idaho cities by AQI (most polluted first)
| City | US AQI | Category | PM2.5 µg/m³ | PM10 µg/m³ | Ozone µg/m³ |
|---|---|---|---|---|---|
| Pocatello | 34 | Good | 4.6 | 8 | 81 |
| Caldwell | 34 | Good | 2.5 | 3 | 76 |
| Idaho Falls | 33 | Good | 6 | 10 | 73 |
| Rexburg | 33 | Good | 4.6 | 6 | 84 |
| Boise | 29 | Good | 2.4 | 3 | 84 |
| Meridian | 29 | Good | 2.4 | 3 | 84 |
| Nampa | 29 | Good | 2.4 | 3 | 84 |
| Moscow | 29 | Good | 2.9 | 3 | 75 |
| Eagle | 29 | Good | 2.4 | 3 | 84 |
| Coeur d'Alene | 27 | Good | 4.6 | 5 | 72 |
| Post Falls | 27 | Good | 4.6 | 5 | 72 |
What the US AQI numbers mean
| US AQI | Category | What it means |
|---|---|---|
| 0-50 | Good | Air quality is satisfactory and poses little or no risk; a good time for outdoor activity. |
| 51-100 | Moderate | Acceptable for most people. Unusually sensitive people should consider shortening long or heavy exertion outdoors. |
| 101-150 | Unhealthy for Sensitive Groups | People with heart or lung disease, older adults, children and teens should cut back on prolonged or heavy exertion outdoors. |
| 151-200 | Unhealthy | Everyone should reduce prolonged or heavy exertion outdoors; sensitive groups should avoid it and keep windows closed. |
| 201-300 | Very Unhealthy | Health alert: everyone should avoid prolonged or heavy exertion outdoors, and sensitive groups should stay indoors. |
| 301-500 | Hazardous | Emergency conditions: everyone should avoid all outdoor physical activity and stay indoors with filtered air if possible. The scale tops out at 500; heavier dust or smoke is shown as 500. |
Modelled by CAMS (Copernicus) via Open-Meteo, refreshed twice a day; read hour by hour from the forecast.
Cities in Idaho
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Data: Open-Meteo Air Quality API, Copernicus Atmosphere Monitoring Service (CAMS).