Air quality alerts can change quickly during wildfire smoke events. Here’s what Code Orange, Code Red, Code Purple and Code ...
When an air quality alert is announced, here are what the code colors mean and what the health dangers are as Canadian wildfire reaches Delaware.
Today's air quality is worse than forecasters projected in Washington DC, going beyond Code Red into Code Purple. Forecasters initially believed air quality would be at its worst Friday with an AQI ...
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