Residents of central Pennsylvania should prepare for hazy skies and reduced air quality today as wildfire smoke from Canada persists across the region. An air quality alert remains in effect until midnight, with visibility potentially limited and particulate matter levels elevated.

An air quality alert was issued by the National Weather Service in Mount Holly at 3:47 a.m. on Tuesday, Aug. 5. This warning applies to Delaware, Philadelphia, Western Chester, Eastern Chester, Western Montgomery, Eastern Montgomery, Upper Bucks and Lower Bucks counties.

Air quality alerts are in effect on Tuesday in 10 states as toxic smoke from hundreds of wildfires burning in Canada continues to waft into the United States, creating hazy, gray skies over major metropolitan areas,