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Smoke descends on Northeastern US. Map shows air quality impacts.


State officials from Maine to New York issued alerts for fine particulate matter, a toxic byproduct of wildfires that is small enough to be inhaled.

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NEW YORK CITY − Wildfire smoke wafted from Canada to create unhealthy air quality levels across the Northeast on July 26.

State officials from Maine to New York issued alerts for fine particulate matter, a toxic byproduct of wildfires that is small enough to be inhaled. Smoky conditions impacted cities including Boston and New York.

Canada’s fires could produce more smoke blowing into the Northeast through the afternoon, said Brooke Taber, a National Weather Service meteorologist stationed in Burlington, Vermont. Smoke is also causing limited visibility in some areas. Wind changes could provide a respite by the night, Taber said.

Montreal had some of the worst air quality in the world due to fires in the Canadian Prairies, the Canadian Press reported, citing IQAir, a Swiss-based monitoring company. Several wildfires burning in Saskatchewan and Manitoba are sending large smoke plumes eastward, according to Quebec’s fire provincial agency.

Meanwhile, New York City climbed on IQAir’s list of cities with unhealthy air levels. Hazy skies and the faint smell of smoke blanketed Manhattan on Saturday.

Map shows US air quality

Why air quality matters

Officials urged people to stay indoors to reduce exposure, and to limit strenuous activity. Exposure can cause short-term effects such as irritation of the eyes, nose and throat, along with coughing, sneezing, runny nose and shortness of breath. It can be particularly dangerous for people in sensitive groups, such as children, older people and those with chronic health conditions, such as asthma or heart disease.

Canada is experiencing another harsh wildfire season in a warming climate. Dozens of wildfires are blazing uncontrolled, according to Canada’s natural resources department. In early July, Manitoba's government declared a state of emergency for its historic fires.

Eduardo Cuevas is based in New York City. Reach him by email at emcuevas1@usatoday.com or on Signal at emcuevas.01.