(230608) -- NEW YORK, June 8, 2023 (Xinhua) -- A cyclist rides a bike passing an air quality alert sign in New York, the United States on June 7, 2023. Smoke from raging wildfires in Canada has triggered air quality alerts in a number of U.S. 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." TO GO WITH "Feature: New Yorkers suffer over smoke from Canadian wildfires" (Photo by Michael Nagle/Xinhua)