A maroon Air Quality Index indicates a health warning of emergency conditions, as everyone is likely to be affected.
(WHTM) — If you thought air quality was bad in Code Red conditions, there are two worse levels. The Pennsylvania Department of Environmental Protection (DEP) uses the U.S. Environmental Protection ...
Air quality alerts use color-coded categories to show when pollution levels may be unhealthy. Code Orange is unhealthy for sensitive groups, while Code Red is unhealthy for everyone. Code Purple means ...
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