What is the air quality in Great Falls today?

The current Air Quality Index (AQI) in Great Falls is 54 (Moderate). PM2.5 concentration is 13.5 µg/m³.

What is the temperature in Great Falls right now?

The current temperature in Great Falls is 17.1°C (feels like 17.1°C). Humidity is 28.1% and wind speed is 44.8 km/h.

Air Quality in Great Falls, United States

Windy

17.1°C · 28.1% humidity

17.1°

Feels 17.1°

Moderate

Unusually sensitive people should consider reducing prolonged outdoor exertion.

Model forecast

Nearby Monitoring Stations

AQI Forecast

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View AQI history for Great Falls →

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.

28.1%

Humidity

44.8 km/h

Wind WSW

1009.4 hPa

Pressure

0.0

UV Low

GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5

13.5 µg/m³

PM10▲

104.9 µg/m³

050100150200300500

What is the weather forecast for Great Falls?

Temperature & Precipitation

PM2.513.5 µg/m³ ✓ WHO

Moderate

PM10104.9 µg/m³

Moderate

UV INDEX0.0

Low

What is the 7-day forecast for Great Falls?

10-20

21.0° 8.4°

0.06 mm

10-21

17.1° 3.9°

1.81 mm

10-22

17.1° 6.9°

10-23

9.6° 3.1°

10-24

12.9° -3.2°

10-25

13.7° 3.9°

10-26

10.3° 5.6°

Both models agree Avg diff: 6.1°C

What cities are near Great Falls?

25 Helena 25 Butte 25 Bozeman 30 Missoula 31 Kalispell 28 Lethbridge 28 Medicine Hat 27 Billings

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Data sources: Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-10-20T23:43 UTC.