What is the air quality in Williston today?

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

What is the temperature in Williston right now?

The current temperature in Williston is 18.2°C (feels like 18.2°C). Humidity is 29.6% and wind speed is 47.8 km/h.

Air Quality in Williston, United States

Windy

18.2°C · 29.6% humidity

18.2°

Feels 18.2°

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 Williston →

Williston's air quality is primarily affected by vehicle emissions and industrial activity. Seasonal wildfire smoke and weather patterns can cause periodic air quality deterioration.

29.6%

Humidity

47.8 km/h

Wind SSW

1008.4 hPa

Pressure

0.0

UV Low

GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲

13.5 µg/m³

PM10

54.9 µg/m³

050100150200300500

What is the weather forecast for Williston?

Temperature & Precipitation

PM2.513.5 µg/m³ ✓ WHO

Moderate

PM1054.9 µg/m³

Moderate

UV INDEX0.0

Low

What is the 7-day forecast for Williston?

10-20

18.8° 2.7°

10-21

18.2° 4.3°

10-22

14.1° 8.9°

10-23

10.8° 3.5°

10-24

10.3° 4.3°

0.13 mm

10-25

10.6° 4.6°

0.13 mm

10-26

13.8° 0.5°

1.63 mm

Both models agree Avg diff: 5.2°C

What cities are near Williston?

54 Dickinson 20 Minot 10 Mandan 10 Bismarck 36 Arcola East 36 Dewdney East 36 Regina 44 Moose Jaw 44 Brandon

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Data sources: Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-10-20T21:43 UTC.