New York State issued an air quality health advisory for Tuesday, lasting until midnight, because of high levels of fine particulate matter in the air, which wildfires contribute to.
By late afternoon, the Air Quality Index for New York City had reached 170, well above average. The concentration of microscopic particulate pollution called PM2.5 was nine times above exposure recommendations from the World Health Organization.
In a statement, the Department of Environmental Conservation noted that while it was not rare for traveling wildfire smoke to reach the New York region, the smoke usually stayed high in the atmosphere. But in this case, “data showed that the smoke is extending down to the ground level,” since much of it is coming from relatively nearby fires in western Ontario and eastern Manitoba.
Climate change is making wildfires larger and more intense, with results visible from satellites and on the ground. The Bootleg Fire in Oregon now covers more than 388,000 acres and is so intense that it is essentially making its own weather. Satellite images from the National Oceanic and Atmospheric Administration show smoke from that fire and others making its way across wide swaths of the United States and Canada. It first reached New York City around July 15.
Mr. Cristantello said that a cold front pushing through the New York City area on Wednesday should clear out the haze, but it could return if the fires persist.
Source Article from https://www.nytimes.com/2021/07/20/us/wildfire-smoke-new-york-city.html
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