Environment ❯ Air Quality ❯ Pollution

Wildfire Smoke

Health Effects Health Risks Health Impacts Health Alerts Health Advisory Canadian Wildfires Advisories Impact on Health Toronto Health Advisories

Scattered Severe Storms Tonight Before Weekend Triple‑Digit Heat and Elevated Fire Risk

Short‑lived storms will give way to a strong heat ridge that raises fire danger and will be broken by a weak front early next week.

Chicago Region Under Air Quality Alert as Second Wave of Canadian Wildfire Smoke Lingers

Cedar Point Cancels Boardwalk Nights as Canadian Wildfire Smoke Forces Regional Park Closures

Canadian Wildfire Smoke Chokes U.S. Midwest to Northeast

Canadian Wildfires Send Hazardous Smoke Over U.S. Midwest and Northeast

Smoke From Canadian and Minnesota Wildfires Drives Hazardous Air Across 17 States

MPCA Projects Active Summer for Minnesota Air Alerts

UW Study Finds Wildfire Smoke Linked to Declines in Sperm Quality

Bay Area Issues Air Quality Advisory as Oregon Wildfire Smoke Reaches San Francisco

Multi-State Air Quality Alerts Urge Drivers to Stay Off Roads as Ozone, Smoke Spike

Air Quality Warnings Persist Across Prairies as Edmonton Hits 10+ Risk

Smoke From Gifford Fire Triggers Bay Area Air Quality Advisory

Heat and Wildfire Smoke Keep Multi-State Air Quality Alerts in Effect

Wildfire Smoke From Canada Triggers Minnesota Air Quality Alert and Travel Advisories

Midwest Remains Under Air Quality Alerts as Canadian Wildfire Smoke Lingers

High Pressure Ushers in Mild, Dry Weekend for Northeast Ohio

Smoke From Canadian Wildfires Keeps Minnesota and Michigan Under Air Quality Alerts

Wildfire Smoke Triggers Widespread Air Quality Alerts Across Upper Midwest

Containment Rises on Western Slope Wildfires Despite Forecasted Storms

Dangerous Ozone Levels and Wildfire Smoke Keep Air Quality Alerts in Effect