Air Quality in Great Falls, United States
Clear
31.1°C · 23.4% humidity
31.1°
Feels 31.1°
60
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
Model forecast
Nearby Monitoring Stations
Great Falls's air quality — share it
AQI Forecast
54
2pm
54
54
60
5pm
58
57
56
8pm
68
67
67
11pm
67
66
66
2am
54
54
54
5am
34
54
54
8am
54
54
34
11am
27
27
Great Falls's air quality is primarily affected by vehicle emissions and industrial activity. Seasonal wildfire smoke and weather patterns can cause periodic air quality deterioration. Current PM2.5 concentration in Great Falls is 1.1× the WHO 24-hour guideline of 15 µg/m³.
23.4%
Humidity
21.6 km/h
Wind SW
1004.5 hPa
Pressure
12.9
UV Extreme
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
16.35 µg/m³
PM10
34.3 µg/m³
050100150200300500
What is the weather forecast for Great Falls?
Temperature & Precipitation
PM2.516.35 µg/m³
×1.1 WHO
Moderate
PM1034.3 µg/m³
Good
UV INDEX12.9
Extreme
What is the 7-day forecast for Great Falls?
08-03
34.4° 17.9°
08-04
27.8° 13.4°
08-05
35.9° 18.6°
08-06
36.9° 10.9°
0.06 mm
08-07
30.8° 13.3°
08-08
35.3° 14.9°
08-09
34.7° 14.1°
Both models agree
Avg diff: 3.5°C
What cities are near Great Falls?
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Data sources: Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-08-07T23:54 UTC.