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The Tamarack fire burns unchecked due to drought conditions and gusty winds. The Tamarack fire continues to burn through more than 21,000 acres and is currently 0% contained. Photo: Ty O'Neil/SOPA Images/LightRocket via Getty Images

Earlier this week, Philadelphia’s air quality was worse than Los Angeles, San Francisco and Portland — all cities closest to where the wildfires are raging.