An air quality alert is in effect for all of Massachusetts as smoke from Canadian wildfires descends into the Boston area.

The National Weather Service reported an updated air quality alert at 10:15 a.m. on Monday in effect until 11:15 p.m. for Northern Worcester and Southern Worcester as well as Franklin, Middlesex, Essex,

Canada is experiencing a terrible wildfire season with nearly 4,000 wildfires so far this year, close to a record pace.