Smoke from Canadian wildfires continues to set off air quality alerts in US states, as health officials warn people, especially children, the elderly or those with respiratory illnesses, to limit their time outdoors.
The Federal Aviation Administration issued a ground stop Thursday on all flights bound for LaGuardia Airport in New York City due to poor visibility. The air quality index rose to “dangerous” levels in Philadelphia, as everyone was urged to stay indoors. And employees at the National Mall in Washington, D.C., have been encouraged to cut back on all outdoor activities.
Updated forecast maps showed the lingering smoke slowly moving south. And while conditions are expected to improve in the Northeast and the Atlantic coast on Thursday, they are likely to worsen in Pittsburgh, Cleveland and Detroit.
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