Air quality alerts can change quickly during wildfire smoke events. Here’s what Code Orange and Code Red mean, who is most at ...

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

The Pennsylvania Department of Environmental Protection (DEP) declared on Wednesday a statewide Code Red Air Quality Action ...

The Delaware Department of Natural Resources and Environmental Control issues air quality index alerts based on standards set by the Environmental Protection Agency. The index ranges from green for ...

What are "Code Red" and "Code Purple" air quality alerts? The Air Quality Index has six color-coded categories, ranging from ...

During Code Red Alerts, residents should consider limiting outdoor activities, and sensitive groups should avoid them.