Issued: Fri Jul 17 | 10:19 AM
In effect for: Carbon; Monroe; Berks; Lehigh; Northampton; Delaware; Philadelphia; Western Chester; Eastern Chester; Western Montgomery; Eastern Montgomery; Upper Bucks; Lower Bucks
Severe: Unknown
Air Quality Alert issued July 17 at 10:19AM EDT by NWS Mount Holly NJ
Jul 17, 2026 | 10:19 AM
Certainty: Unknown
Urgency: Unknown
The Pennsylvania Department of Environmental Protection has issued a
Code Purple Air Quality Action Day for Fine Particulates, until
midnight EDT tonight.
An Air Quality Action Day means that air quality within the region
may approach or exceed unhealthy standards. For more information on
current and forecast concentrations of ground-level ozone and fine
particulates, visit www.airnow.gov or www.aqpartners.state.pa.us
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