Smoke drifting south from Canadian wildfires has blanketed the Tri-State area, prompting officials to extend an air-quality alert through the weekend.

New York City Emergency Management warned that the smoke is creating “unhealthy conditions for sensitive groups,” including older adults, young children, pregnant individuals, outdoor workers, and people with heart or lung conditions. Visibility has dropped to between four and six miles, and a faint smell of smoke is noticeable in some areas.

Residents in vulnerable categories are advised to limit time outdoors, keep windows closed, use air purifiers if possible, and consider wearing high-quality masks when outside.

The smoke, carried in on northerly winds, has cooled recent high temperatures but brought with it pollution from ongoing forest fires in Canada. On Saturday, the Air Quality Index (AQI) reached “Level Orange” (101–150), signaling that conditions may be hazardous for sensitive populations.

Forecasters say the thickest smoke will linger through early Sunday before gradually shifting toward New England.

While the general risk to healthy individuals remains low, the situation could worsen due to an incoming heatwave. A heat advisory has been issued beginning 11 a.m. Monday, with heat index values expected to soar to 105°F. The advisory will remain in effect through Tuesday.

Officials urge residents to stay informed and take extra precautions, especially if they are in high-risk groups.