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 air quality alert at 8:43 a.m. on Monday in effect until 11 p.m. for Northern Worcester and Southern Worcester as well as Middlesex, Essex, Hampshire, Hampden,

Along with the humid air, air quality in Bristol County is expected to be unhealthy for sensitive groups. The Massachusetts Department of Environmental Protection (MassDEP) has issued an air quality advisory, effective Tuesday, Aug. 12, from 11 a.m. to 11 p.m.