Bad Air Quality Engulfs Multiple US States: How it Impacts Your Health
Summary
Smoke from wildfires in Canada and the U.S., combined with ozone pollution caused by heat and sunlight, has created poor air quality in many U.S. states. Air quality alerts have been issued for several states warning that the air may be unhealthy, especially for sensitive groups.Key Facts
- Smoke from Canadian wildfires has spread into the Midwest and Northeast U.S.
- Wildfires in the western U.S. are also producing local smoke adding to pollution.
- As of July 19, 2026, there have been over 40,000 wildfires in the U.S., burning more than 3.8 million acres.
- Hot, still air conditions cause ozone pollution to build up near the ground.
- Air Quality Alerts have been issued in states including Michigan, Minnesota, Iowa, Wisconsin, Illinois, Indiana, Ohio, Oregon, Idaho, Washington, and Colorado.
- Fine particulate matter (PM2.5) from smoke can reach unhealthy levels for sensitive groups.
- Wildfire smoke can travel hundreds or thousands of miles, affecting air quality far from fire locations.
- The Environmental Protection Agency reports that wildfire smoke levels and affected areas have increased over recent years.
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