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Air quality · United States

Montana Air Quality (AQI) Now

22 Fair
European Air Quality Index
PM2.5
1.7µg/m³WHO limit 15
PM10
2.2µg/m³WHO limit 45
NO₂
2.9µg/m³
O₃
64µg/m³
Desert dust
0µg/m³
UV index
0.1
US AQI
32

Updated: · Source: Copernicus CAMS · Open-Meteo

Air quality in Montana is fair right now: European Air Quality Index 22. Fine particulate matter (PM2.5) is 1.7 µg/m³, below the WHO guideline. Fine for outdoor activities; very sensitive people may reduce prolonged strenuous exercise. Pollution is expected to peak around 15:00 over the next 48 hours (index 36, fair).

Montana 48-hour air quality forecast

05:00: 1605:0006:00: 1607:00: 1608:00: 1609:00: 1610:00: 1711:00: 1811:0012:00: 2013:00: 2514:00: 3215:00: 3616:00: 3617:00: 3517:0018:00: 3219:00: 2920:00: 2621:00: 2322:00: 2023:00: 1923:0000:00: 1801:00: 1802:00: 1803:00: 1804:00: 1905:00: 2005:0006:00: 2007:00: 1908:00: 1809:00: 1810:00: 2111:00: 2811:0012:00: 3313:00: 3414:00: 3315:00: 3216:00: 3117:00: 3017:0018:00: 2819:00: 2620:00: 2421:00: 2222:00: 2023:00: 1923:00

Air quality across Montana

Cleanest to most polluted.

Frequently asked questions

Is Montana polluted today?
Air quality in Montana is fair right now: European Air Quality Index 22. Fine for outdoor activities; very sensitive people may reduce prolonged strenuous exercise.
Is it safe to exercise outdoors in Montana today?
Yes, air quality is fair right now; fine for outdoor exercise.
How is the air quality index calculated?
The European Air Quality Index is set by the worst of PM2.5, PM10, nitrogen dioxide, ozone and sulphur dioxide: 0–20 good, 20–40 fair, 40–60 moderate, 60–80 poor, 80–100 very poor, above 100 extremely poor.

Values are Copernicus Atmosphere Monitoring Service (CAMS) model forecasts and may differ from local monitoring stations.

Montana air quality: details

Pollutants and recent days

Nitrogen dioxide (NO₂) is 2.9 µg/m³ and ozone (O₃) 64 µg/m³; WHO guideline values are 25 (24 h) and 100 µg/m³ (8 h).