Air quality alerts can change quickly during wildfire smoke events. Here’s what Code Orange, Code Red, Code Purple and Code Maroon mean, and when you should limit time outside.
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.
Delaware is under a Code Red air alert due to smoke from Canadian wildfires. What does a code purple mean and what is AQI?
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