Aug. 18, 2026: Wildfire Smoke Air Quality Update
Posted on August 18, 2026
The current air quality across Missoula County ranges from Good to Moderate. See current air quality conditions at Fire.AirNow.Gov.
Beneficial rainfall, clouds, and cooler temperatures over the last several days has helped limit fire activity at local fires. A little bit of smoke blew into the area yesterday from fires in Washington and British Columbia, and more air quality sensors are reading Moderate this morning compared to yesterday morning. Still, it’s another good day to be active outside for most people.
When the air quality is Moderate, unusually sensitive people should consider making outdoor activities shorter and less intense. Watch for symptoms such as coughing or shortness of breath. These are signs to take it easier.
Air quality conditions from EPA Fire and Smoke map on Tuesday, Aug. 18.
West winds will continue blowing light to moderate smoke through the region today and tomorrow. The smoke is coming from fires in Oregon, Idaho, and Washington. You may notice a bit more haze in the sky, but thankfully the smoke shouldn’t be too thick, and air quality is forecast to stay at Good to Moderate levels.
Hot, dry, and windy conditions are forecast to develop tomorrow through Friday as high pressure builds over the region. Fire activity and smoke production will likely start to increase across the region. Southwest winds on Thursday and Friday could increase the amount of smoke blowing our way from fires in Oregon and Idaho. Cooler temperatures, increased winds, and potentially more thunderstorms are forecast for this weekend.
HRRR model near-smoke forecast for 5 p.m. ,Tuesday, Aug. 18., showing light to moderate smoke blowing into our region.
Remember that air quality can change rapidly, so it’s always a good idea to check the latest air quality conditions at Fire.AirNow.Gov.
If air quality worsens, remember that creating a clean indoor air space is the best way to reduce your exposure to smoke. You can either use a portable air cleaner with a HEPA filter or a MERV 13+ furnace filter attached to a box fan. For more information about ways to keep smoke out of your living space and reduce your exposure to smoke, explore the resources at MontanaWildfireSmoke.org.