air quality - NatureWeatherHub

Ontario Wildfires 2026: Nearly 200 Fires Force Evacuations and Choke Millions With Smoke

July 21, 2026July 18, 2026 by JOSHUA LINN

Smoke rising from Ontario wildfires 2026 over a burning boreal forest

The Ontario wildfires 2026 season erupted in mid-July as nearly 200 forest fires burned across northern Ontario. The blazes forced wildfire evacuations Ontario in at least 15 communities and sent hazardous Canadian wildfire smoke across 19 U.S. states. Toronto air quality briefly ranked as the worst in the world. In Milwaukee, the Air Quality Index … Read more

Wildfire Smoke Is Traveling Farther and Hurting More People Than Scientists Expected

July 24, 2026June 28, 2026 by JOSHUA LINN

Distant wildfire smoke creates an orange haze over a city skyline, illustrating how smoke travels hundreds of miles across the country

Wildfire smoke travels thousands of miles, carrying PM2.5 particles linked to stroke, asthma, and heart disease. Learn how far smoke can travel, what it does inside your body, and exactly how to protect yourself with air purifiers, N95 masks, and indoor safety tips.

Wildfire Smoke Is Crossing Continents: How 2026 Fires Are Affecting Air Quality Worldwide

July 23, 2026June 22, 2026 by JOSHUA LINN

Aerial view of wildfire smoke plume traveling across continental landscape

Wildfire smoke from North America is crossing oceans, choking cities and erasing decades of air quality gains. Here is what the 2026 season means for your healt