Air Quality in Helena, United States
Clear
24.1°C · 33.2% humidity
24.1°
Feels 24.1°
24
Good
Air quality is satisfactory. Enjoy outdoor activities.
Model forecast
Nearby Monitoring Stations
AQI Forecast
24
11am
24
24
24
2pm
24
24
24
5pm
24
24
24
8pm
24
25
25
11pm
25
25
25
2am
25
25
25
5am
25
25
24
8am
24
24
Helena's air quality is primarily affected by vehicle emissions and industrial activity. Seasonal wildfire smoke and weather patterns can cause periodic air quality deterioration.
33.2%
Humidity
2.9 km/h
Wind SE
1005.2 hPa
Pressure
12.9
UV Extreme
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
5.8 µg/m³
PM10
13.7 µg/m³
050100150200300500
What is the weather forecast for Helena?
Temperature & Precipitation
PM2.55.8 µg/m³
✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX12.9
Extreme
What is the 7-day forecast for Helena?
06-08
24.1° 11.2°
1.06 mm
06-09
24.4° 12.0°
8.0 mm
06-10
20.8° 3.8°
06-11
27.9° 11.2°
06-12
12.6° 9.6°
6.19 mm
06-13
27.7° 10.5°
1.5 mm
06-14
26.9° 13.3°
Both models agree
Avg diff: 5.9°C
What cities are near Helena?
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Data sources: Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-06-08T20:43 UTC.