The National Weather Service reported an air quality alert at 7:22 a.m. on Tuesday in effect until 11:15 p.m. for Franklin, Hampshire and Hampden counties.

An air quality alert is in effect for all of Massachusetts today due to smoke from Canadian wildfires, and it could be the worst air quality day the Boston area has seen all year. The Massachusetts Department of Environmental Protection issued an alert for "fine particulates" in the air until midnight.

Hazy conditions will continue on Tuesday across Massachusetts, as the smoke from the Canadian wildfires continues to move through.