New York City air quality was in the red “unhealthy” category before dawn Thursday, a prognosticator of conditions to come as smoke from Canadian wildfires hits its thickest point over the tri-state area. The entire region is under an air quality alert until midnight. The smoke is com ing from wildfires burning primarily in Ontario. The combination of high pressure over the Central U.S. and low pressure over Eastern Canada has been funneling the smoke into the tri-state. Impacts started Tuesday. Wednesday’s smoke concentrations were worse. The air quality index for midtown Manhattan at 1 p.m. Wednesday topped 150, putting it in the “unhealthy” range. Many people reported eye irritation and the smell of smoke in the air. Live cameras showed the city enveloped by haze. Thursday’s smoke concentrations will be similar to those on Wednesday.  The Air Quality Index for Midtown Manhattan at noon on Thursday was in the “unhealthy for sensitive groups” category. It will likely stay between 100 and 200 through Thursday afternoon. These are concentrations that are high enough to irritate your throat and eyes. You will likely be able to smell the smoke, too. High levels of fine particulate matter in the air from wildfire smoke may be especially unhealthy for sensitive groups, such as children and people with heart or lung conditions. The particulates can cause shortness of breath, coughing, dizziness or fatigue, and aggravate heart and lung diseases and other chronic health issues. The diminished air quality, in addition to the ongoing heat advisory, makes indoors the place to be. Stay in an air-conditioned space if possible. Smoke concentrations in the Great Lakes Region of the country, much closer to the source of the smoke, are much higher than those in the tri-state area. Air quality from Michigan to Minnesota is in the “hazardous” range, with AQIs above 300. Experts suggest wearing a KN95 mask if you have to be outside and keeping your indoor air cleaner by closing windows and running an air purifier or air conditioner. The city’s Office of Emergency Management says free KN-95 masks are available at NYPD precincts and public library branches throughout the five boroughs. Masks are also available at the following FDNY firehouses: Bronx: 720 Melrose Avenue Bronx: 2417 Webster Avenue Brooklyn: 172 Tillary Street Brooklyn: 885 Howard Avenue Manhattan: 100 Duane Street Manhattan: 207 W 77th Street Queens: 91-45 121st Street Queens: 108-01 Horace Harding Expy Staten Island: 1850 Clove Road @nbcnewyork Amid air quality concerns due to smoke from Canadian wildfires (along with heat and humidity levels), NYC is handing out free KN-95 masks at NYPD precincts and public library branches throughout the five boroughs. There are also masks available at nine firehouses across the city. The air quality index for midtown Manhattan on Wednesday topped 150, putting it in the "unhealthy" range. Many people reported eye irritation and the smell of smoke in the air. The diminished air quality, in addition to the ongoing heat advisory, makes being outside unadvisable. High levels of fine particulate matter in the air from wildfire smoke can cause shortness of breath, coughing, dizziness or fatigue and aggravate heart and lung diseases and other chronic health issues. #nbc4ny #nyc #health ♬ original sound – NBC New York New Jersey is also taking preventive action. As smoke from Canadian wildfires continues to impact air quality in our region, I’ve directed NJ TRANSIT and the New Jersey Turnpike Authority to make select quantities of masks available to commuters and at rest areas along the Turnpike and Parkway. The Port Authority will also…— Governor Mikie Sherrill (@GovSherrillNJ) July 16, 2026 Remember when THAT happened? Many people remember the extreme wildfire smoke that blanketed the tri-state area on June 7, 2023. A deep orange haze engulfed New York City and the Northeast, and extended west to Minnesota.  On that day, the AQI in NYC peaked at 416, well into the “hazardous” zone. Smoke concentrations will trend lower on Friday and Saturday. Saturday’s smoke concentrations will be lowered by showers and storms during the day, as precipitation helps smoke particles out of the air. See below for what conditions will be like Thursday evening and Friday morning as the smoke lingers: Thursday 8 p.m. Friday 8 a.m. Friday 8 p.m. Saturday 8 a.m. The smoke comes amid a quick heat spell for the NYC area, with temperatures topping 90 degrees. Those highs combined with high humidity make it feel much warmer. While a heat advisory from the National Weather Service expired Wednesday evening, the city said it would be extending a heat emergency through Thursday, according to the OEM. That means pools will remain open until 8:30 p.m., 21 cooling vans will be deployed again, and outreach teams will be contacting homeless New Yorkers. The Associated Press contributed to this report. ...read more read less