Reuters A view from the top of the Rockefeller Center, as haze and smoke caused by wildfires in Canada hang over the Manhattan skyline, in New York City, New York, US, on June 7, 2023. Smoke from raging wildfires in Canada has triggered air quality alerts in a number of US states, with the sky over New York City rapidly darkening Wednesday afternoon and New York State Governor Kathy Hochul calling the worsening air quality "an emergency crisis." The air quality index in New York City reached "hazardous" levels Wednesday afternoon.

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