Air Quality Across the Philadelphia Region

Air Quality Index (AQI) now and over the past 12 hours at five monitoring stations. Higher numbers indicate greater health risks with prolonged exposure.

Good 0–50 Moderate 51–100 Unhealthy for sensitive groups 101–150 Unhealthy 151–200 Very unhealthy 201–300 Hazardous 301+

Current AQI

12 hours agonow

Stephen Stirling / Staff

Source: EPA AirNow

Data is updated hourly. Last update: —.