Wildfire smoke puts Pittsburgh under Code Red air quality alert

Pittsburgh was under a "Code Red" air quality alert July 16 as wildfire smoke hits the city. What that means.

Maryland under Code Red air quality alert due to Canada wildfire smoke

BALTIMORE — Maryland is under a Code Red air quality alert Friday due to Canada and northern United States wildfire smoke ...

Google-backed satellites for wildfire detection launch as smoke chokes US, Canada

As smoke from hundreds of burning wildfires spread across Canada and the United States, the first three operational ...

What does Code Purple mean? How wildfire smoke is making Pennsylvania's air quality "very unhealthy."

Pennsylvania is under a statewide Code Purple air quality alert on Friday because of smoke from the wildfires in Canada and ...
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What are Code Purple and Code Maroon? Behind the air quality alerts above Code Red

(WHTM) — If you thought air quality was bad in Code Red conditions, there are two worse levels. The Pennsylvania Department ...