Air Quality in Helena, United States
Partly Cloudy
7.0°C · 58.4% humidity
7.0°
Feels 3.9°
38
Good
Air quality is satisfactory. Enjoy outdoor activities.
Calibrated model
Nearby Monitoring Stations
AQI Forecast
12
4pm
12
12
12
7pm
12
12
12
10pm
12
12
12
1am
12
12
12
4am
25
25
25
7am
25
25
25
10am
25
25
25
1pm
25
12
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
PM2.59.12 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: 5.1°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 2026-04-09T19:02 UTC.