Today | Weather | Wednesday, August 12, 2026
Active Weather Warnings

Weather in Bozeman, Montana

05:14 AM
Now
Cloudy Night
57° F
Feels Like 57°
Precipitation 0 %
Wind 6 mph
Humidity 54 %
Today
Cloudy Weather
Day 84°
Night 55°
Precipitation 17 %
Wind 7 mph
UV Index (0 - 11+) 7

Bozeman Weather Forecast Updated

Last updated on

Air Quality in Bozeman

NOW
110 AQI
Unhealthy air quality for sensitive groups Dominant pollutant: PM2.5

Pollutant Concentrations:

PM2.5 39.31 µg/m³
PM10 39.73 µg/m³
O3 0.034 ppm
NO2 1 ppb
SO2 0 ppb
CO 0.14 ppm
NH3 3.97 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:

Members of sensitive groups may experience health effects. The general public is not likely to be affected.

Show raw pollutant concentrations (µg/m³)
PM2.539.31 µg/m³
PM1039.73 µg/m³
O367.23 µg/m³
NO21.92 µg/m³
SO20.05 µg/m³
CO162.67 µg/m³
NH33.97 µg/m³
NO0 µg/m³

Weather Alerts and Warnings for Bozeman

Air Quality Alert

Air Quality Alert issued August 11 at 8:15AM MDT by NWS Great Falls MT
Aug 11, 8:15 AM Aug 12, 9:00 AM
AQAMT

The Montana Department of Environmental Quality has issued an air
quality alert for Beaverhead, Deer Lodge, Gallatin, Granite, Madison,
Park, Flathead, Jefferson, Lake, Lewis and Clark, Lincoln, Mineral,
Missoula, Powell, Ravalli, and Silver Bow counties in effect until
9AM on 08/12/2026
An Air Quality Alert means that particulates have been trending
upwards and that an exceedance of the 24 hour National Ambient Air
Quality Standard (NAAQS) has occurred or may occur in the near
future.

Elevated particulate levels from wildfire smoke

As of 8AM on 08/11/2026, particulate levels in Missoula are
Unhealthy.

As of 8AM on 08/11/2026, particulate levels in Dillon, Frenchtown,
Great Falls and Hamilton are Unhealthy for Sensitive Groups.

As of 8AM on 08/11/2026, particulate levels in Billings, Butte,
Choteau, Columbia Falls, Cut Bank, Helena, Lewistown, Libby, Malta,
Thompson Falls and West Yellowstone are Moderate.

When air quality is Unhealthy... State and local health officials
recommend that people with respiratory or heart disease, the elderly,
and children should avoid prolonged exertion; everyone else should
limit prolonged exertion.

When air quality is Unhealthy for Sensitive Groups... State and local
health officials recommend that people with respiratory or heart
disease, the elderly and children should limit prolonged exertion.

When air quality is Moderate... State and local health officials
recommend that unusually sensitive people should consider reducing
prolonged or heavy exertion.

For more information visit the Montana Department of Environmental
Quality at http://todaysair.mtdeq.us
Updated: Aug 12, 3:27 AM Source: NWS Alert