Canadian Wildfires: Wildfire smoke from Canada has caused yellow skies and hazy conditions across the northeastern United States. This smoke traveled over one thousand miles from active wildfires burning in Canada. The tiny particles in the smoke block blue light, allowing yellow and orange wavelengths to pass through. Forecasters predict that smoke concentrations could become even higher in some locations. Residents are advised to limit outdoor activity if air quality deteriorates significantly.

Wildfires in Canada are pouring thick clouds of smoke into the US and will usher in unhealthy air quality for millions of people in Northeast and Midwest.

Wildfire smoke has settled thickly in parts of New York, Connecticut, Wisconsin, Michigan and Minnesota—and it’s heading further south.

A massive plume of smoke from wildfires burning across Canada has swept into the United States, degrading air quality across the Midwest, Northeast and Mid-Atlantic.

Residents have been warned to stay indoors to avoid both the smoke and the extreme heat