An air quality alert has been issued for all of Upstate New York because of drifting smoke from the Western wildfires.

While air quality alerts are generally issued for ozone, Tuesday’s alert is for “fine particles” that can lodge in the lungs and make breathing difficult. The alert is in effect until midnight.

The state Department of Health recommends that people minimize strenuous outdoor activity, especially the elderly, young children and people with respiratory or heart problems.

More than 100 wildfires are burning in the Pacific Northwest, Montana, Colorado and southern Canada.

The smoke has also caused reddish sunsets and sunrises, and is covering the skies above Upstate New York with a grayish haze today. It will likely dissipate later today when a storm system moves through, potentially bringing strong thunderstorms to Upstate New York.

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