Canada wildfires are leading to air-quality alerts in US. Here’s how to stay safe

Intense Canadian wildfires are blanketing the northeastern U.S. in a dystopian haze, turning the air acrid, the sky yellowish gray and prompting warnings for vulnerable populations to stay inside.

The effects of hundreds of wildfires burning across the western provinces to Quebec could be felt as far away as New York City and New England, blotting out skylines and irritating throats.

U.S. authorities issued air quality alerts. Hazy conditions and smoke from the wildfires were reported across the Great Lakes region from Cleveland to Buffalo.

A smoky haze that hung over New...