What are "Code Red" and "Code Purple" air quality alerts? The Air Quality Index has six color-coded categories, ranging from cleanest to hazardous.
It’s a dangerous business going out your door right now. No, that’s not a seemingly perpetual fog hovering outside—the smoke from the Canadian wildfires has crossed borders. Said fires are currently ...
Centre Daily Times on MSN
Statewide 'Code Purple' air quality alert issued for Friday. What it means for Centre County
A "Code Purple" alert is the second-highest level of the Air Quality Index and signifies a "very unhealthy" level of air pollution.
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