What is the air quality in Helena today?

The current Air Quality Index (AQI) in Helena is 25 (Good). PM2.5 concentration is 5.9 µg/m³.

What is the temperature in Helena right now?

The current temperature in Helena is 4.0°C (feels like 0.6°C). Humidity is 79.9% and wind speed is 14.3 km/h.

Is it safe to go outside in Helena?

Air quality is satisfactory. Enjoy outdoor activities. The UV Index is 2.9 (Moderate).

Air Quality in Helena, United States

Cloudy

4.0°C · 79.9% humidity

4.0°

Feels 0.6°

Good

Air quality is satisfactory. Enjoy outdoor activities.

Model forecast

Nearby Monitoring Stations

AQI Forecast

27 5am

25 8am

25 11am

25 2pm

25 5pm

25 8pm

25 11pm

25 2am

View AQI history for Helena →

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. Current PM2.5 concentration in Helena is 1.2× the WHO annual guideline of 5 µg/m³.

79.9%

Humidity

14.3 km/h

Wind WSW

1018.6 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 Helena?

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 Helena?

05-29

33.1° 4.0°

05-30

31.6° 10.5°

05-31

31.6° 13.5°

06-01

30.5° 4.9°

3.31 mm

06-02

15.7° 4.1°

06-03

24.3° 3.5°

06-04

25.0° 11.4°

0.25 mm

Both models agree Avg diff: 4.7°C

What cities are near Helena?

25 Butte 25 Great Falls 24 Bozeman 24 Missoula 14 Kalispell 28 Billings

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Data sources: Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-05-29T14:36 UTC.