What is the air quality in Williston today?

The current Air Quality Index (AQI) in Williston is 55 (Moderate). PM2.5 concentration is 13.9 µg/m³.

What is the temperature in Williston right now?

The current temperature in Williston is 4.3°C (feels like -1.3°C). Humidity is 95.3% and wind speed is 34.7 km/h.

Air Quality in Williston, United States

Overcast

4.3°C · 95.3% humidity

4.3°

Feels -1.3°

Moderate

Unusually sensitive people should consider reducing prolonged outdoor exertion.

Calibrated model

Nearby Monitoring Stations

AQI Forecast

25 7pm

25 10pm

37 1am

75 4am

75 7am

99 10am

136

156 1pm

156

50 4pm

95.3%

Humidity

34.7 km/h

Wind NW

1019.4 hPa

Pressure

0.7

UV Low

GoodModerateUSGUnhealthyVery UnhealthyHazardous

What is the weather forecast for Williston?

Temperature & Precipitation

PM2.513.9 µg/m³ ✓ WHO

Moderate

PM1020.55 µg/m³

Good

UV INDEX0.7

Low

What is the 7-day forecast for Williston?

04-09

3.6° -3.9°

0.13 mm

04-10

9.9° -0.8°

0.06 mm

04-11

13.8° 5.5°

04-12

15.3° 7.5°

7.5 mm

04-13

13.5° 1.9°

0.94 mm

04-14

1.9° -4.3°

1.25 mm

04-15

7.4° 0.3°

Both models agree Avg diff: 4.2°C

What cities are near Williston?

58 Dickinson 55 Minot 55 Mandan 55 Bismarck 25 Arcola East 25 Dewdney East 31 Regina 43 Moose Jaw 53 Brandon

Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-04-09T22:09 UTC.