Air Quality in Great Falls, United States
Partly Cloudy
7.1°C · 62.3% humidity
7.1°
Feels 2.1°
25
Good
Air quality is satisfactory. Enjoy outdoor activities.
Model forecast
Nearby Monitoring Stations
Great Falls's air quality — share it
AQI Forecast
25
5am
25
25
25
8am
25
25
25
11am
25
25
25
2pm
25
25
25
5pm
25
24
24
8pm
24
24
24
11pm
24
24
24
2am
24
24
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 1.2× the WHO annual guideline of 5 µg/m³.
62.3%
Humidity
39.1 km/h
Wind SSW
1016.8 hPa
Pressure
2.9
UV Moderate
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
5.9 µg/m³
PM10
13.7 µg/m³
050100150200300500
What is the weather forecast for Great Falls?
Temperature & Precipitation
PM2.55.9 µg/m³
✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX2.9
Moderate
What is the 7-day forecast for Great Falls?
05-29
31.8° 7.1°
05-30
32.8° 11.7°
05-31
32.9° 14.2°
0.19 mm
06-01
34.1° 7.1°
0.75 mm
06-02
13.0° 5.1°
0.13 mm
06-03
24.2° 5.9°
0.06 mm
06-04
25.9° 12.1°
Both models agree
Avg diff: 4.2°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 2026-05-29T14:47 UTC.