Air Quality in Helena, United States
Partly Cloudy
7.0°C · 58.4% humidity
7.0°
Feels 3.9°
31
Good
Air quality is satisfactory. Enjoy outdoor activities.
Calibrated model
Nearby Monitoring Stations
AQI Forecast
12
2pm
12
12
12
5pm
12
12
12
8pm
12
12
12
11pm
12
12
12
2am
12
12
25
5am
25
25
25
8am
25
25
25
11am
25
25
58.4%
Humidity
16.8 km/h
Wind SW
1014.1 hPa
Pressure
1.4
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous
What is the weather forecast for Helena?
Temperature & Precipitation
PM2.57.43 µg/m³
✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX1.4
Low
What is the 7-day forecast for Helena?
04-09
7.0° -3.7°
0.44 mm
04-10
11.0° -0.6°
04-11
17.4° 6.7°
0.06 mm
04-12
12.8° 2.3°
16.13 mm
04-13
6.7° -2.0°
0.13 mm
04-14
7.4° -0.1°
0.44 mm
04-15
8.2° -1.9°
1.75 mm
Both models agree
Avg diff: 4.6°C
What cities are near Helena?
Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-04-09T17:23 UTC.