New York issues air quality alert days before World Cup final - BBC

New York issues air quality alert days before World Cup final  BBCCanada fires prompt US air quality alerts as smoke blankets major cities  BBCWildfires force thousands to evacuate as skies darken over US and Canadian cities  Sky NewsWatch the Wildfire Smoke Ooze Across North America From Space  The New York TimesAir quality plummets in 20 US states as smoke from Canadian wildfires spreads  The Guardian