315 N 18th St
Monitoring Station
· Philadelphia, United States
39
Good
Air quality is satisfactory. Enjoy outdoor activities.
Last Reading
Nearby Monitoring Stations
GoodModerateUSGUnhealthyVery UnhealthyHazardous
AQI Forecast
Calibrated
36
3pm
36
39
35
6pm
35
35
35
9pm
35
35
48
12am
48
48
48
3am
48
48
—
6am
—
—
—
9am
—
—
—
12pm
—
—
Station readings
36
36
39
CAMS model
adj -2
37
37
37
37
37
37
37
37
37
50
50
50
50
50
50
Air Quality Trend (24h)
PM2.59.3 µg/m³
✓ WHO
Good
Nearby Monitoring Stations
41
1401 John F Kennedy Blvd
36
1358 Ridge Ave, Philadelphia, PA 19123
35
1901 Walnut St
38
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40
2100 Pine St
37
2511 W Girard Ave
40
3312 Walnut St
34
807 Lombard St
Nearby Cities
Station data from AQICN. AQI forecast from ECMWF CAMS. AQI calculated using US EPA standard. Updated 2026-04-09T18:51 UTC.