Smoke from hundreds of wildfires burning across Canada this week drifted into large portions of the United States on Friday, creating hazy skies and unhealthy air quality from the Midwest to the Northeast and Mid-Atlantic.
Some of the poorest air quality was reported around the Great Lakes, where Detroit, Chicago and other cities experienced elevated pollution levels. The smoke also spread into communities farther east, including Washington, Philadelphia and New York City, prompting air quality alerts across more than 20 states.
The smoky conditions also disrupted sporting events. A Major League Baseball game between the Pittsburgh Pirates and Cleveland Guardians was postponed after air quality in Cleveland reached a level considered “very unhealthy.” Another game in Philadelphia had already been rescheduled because of the smoke.
Wildfire smoke contains tiny particles that can travel deep into the lungs and bloodstream. Health officials advised children, older adults, pregnant women and people with heart or lung conditions to limit strenuous outdoor activity, keep windows closed when possible and consider wearing a well-fitting N95 mask if spending extended time outdoors.
Forecasters said weather conditions could bring temporary improvements to some areas over the weekend, but shifting winds may continue carrying smoke into different parts of the country. Residents are encouraged to check local air quality forecasts before making outdoor plans.
