Today | Weather | Wednesday, March 18, 2026

Weather in Bismarck, North Dakota

07:20 AM
Now
Cloudy Night
30° F
Feels Like 25°
Precipitation 0 %
Wind 7 mph
Humidity 99 %
Today
Cloudy Weather
Day 63°
Night 28°
Precipitation 3 %
Wind 8 mph
UV Index (0 - 11+) 2
Overnight Frost 2 AM – 8 AM
Tomorrow Morning Frost 3 AM – 9 AM

Bismarck Weather Forecast Updated

Last updated on
Weather Forecast History
Last Year's Weather on This Day (March 18, 2025)

Day

36°

Night

21°

Air Quality in Bismarck

NOW
39 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 0.71 µg/m³
PM10 2.17 µg/m³
O3 0.042 ppm
NO2 0.3 ppb
SO2 0.1 ppb
CO 0.11 ppm
NH3 2.05 µg/m³
NO 0 µg/m³
PM2.5 – Fine particles <2.5μm
PM10 – Inhalable particles <10μm
O3 – Ozone
NO2 – Nitrogen dioxide
SO2 – Sulfur dioxide
CO – Carbon monoxide
NH3 – Ammonia
NO – Nitric oxide

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

Show raw pollutant concentrations (µg/m³)
PM2.50.71 µg/m³
PM102.17 µg/m³
O382.23 µg/m³
NO20.56 µg/m³
SO20.21 µg/m³
CO123.26 µg/m³
NH32.05 µg/m³
NO0 µg/m³