A day after smoke from Canadian wildfires created hazy conditions across Massachusetts, residents of the Bay State can expect to breathe a little easier on Tuesday. The smoke is expected to stick around,

The National Weather Service has issued an Air Quality Alert for areas north and west of Boston and Worcester for Tuesday. Eastern Massachusetts is no longer included in the alert.

She explained that air quality is largely influenced by wind patterns. With wildfires burning in central Canada, northwesterly winds are carrying smoke into the northeastern U.S., impacting air quality across several states. That's why we're seeing air quality health advisories—like the one issued today for fine particulate matter.