Stay updated with real-time air quality in Philadelphia, Pennsylvania featuring accurate data on AQI, PM2.5, PM10, O3, NO2, SO2, and CO levels. Use our interactive map and detailed forecasts to monitor pollution trends, manage health risks, and plan your daily activities with confidence.
Live AQI (Air Quality Index)
56
Moderate
Philadelphia, Pennsylvania
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
11.81 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
51.65 μg/m³
0
55
155
255
425
605+
20.44 ppb
0
55
71
86
201
201+
0.28 ppb
0
36
76
186
605
1005+
13.35 ppb
0
54
101
361
1250
2050+
0.34 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Moderate
Philadelphia, Pennsylvania
Philadelphia, Pennsylvania
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AQI 56
Moderate
11.85μg/m³
PM2.5
51.76μg/m³
PM10
20.20ppb
O3
0.27ppb
SO2
12.61ppb
NO2
0.35ppm
CO
AQI 58
Moderate
12.86μg/m³
PM2.5
54.99μg/m³
PM10
26.12ppb
O3
0.26ppb
SO2
22.52ppb
NO2
0.23ppm
CO
AQI 58
Moderate
12.56μg/m³
PM2.5
49.39μg/m³
PM10
25.99ppb
O3
0.25ppb
SO2
20.66ppb
NO2
0.26ppm
CO
AQI 54
Moderate
11.34μg/m³
PM2.5
52.50μg/m³
PM10
20.91ppb
O3
0.28ppb
SO2
12.65ppb
NO2
0.38ppm
CO
AQI 54
Moderate
10.55μg/m³
PM2.5
48.54μg/m³
PM10
19.33ppb
O3
0.27ppb
SO2
12.68ppb
NO2
0.39ppm
CO
AQI 56
Moderate
12.00μg/m³
PM2.5
41.74μg/m³
PM10
24.92ppb
O3
0.24ppb
SO2
18.18ppb
NO2
0.30ppm
CO
Air quality data and pollutant measurements for Pennsylvania, USA adhere to strict US EPA standards. The data is collected from multiple reliable sources, including satellites and ground-based monitoring stations. This data is further analyzed and enhanced using machine learning and advanced algorithms that factor in elements such as traffic and population density, ensuring accurate and reliable results.
Source: Ambee Data Sources
The air quality for Philadelphia, Pennsylvania is updated every hour.
The worst air quality in Philadelphia, Pennsylvania in the last 24 hours was observed at 11:00:00 on 2025-06-05.
In the last 24 hrs, the best air quality in Philadelphia, Pennsylvania was observed at 02:00:00 on 2025-06-05.
The current air quality in Philadelphia, Pennsylvania is 56, categorized as Moderate based on real-time data.
The most common pollutant in Philadelphia, Pennsylvania is PM2.5.
If the air quality in Philadelphia, Pennsylvania is poor, consider staying indoors and wearing a mask to protect yourself.
The current PM2.5 concentration at Philadelphia, Pennsylvania is 11.807 μg/m3.
The current PM10 concentration at Philadelphia, Pennsylvania is 51.651 μg/m3.
The current carbon monoxide (CO) concentration at Philadelphia, Pennsylvania is 0.343 ppm.
The current sulfur dioxide (SO2) concentration at Philadelphia, Pennsylvania is 0.276 ppb.
The current ozone (O3) concentration at Philadelphia, Pennsylvania is 20.442 ppm.
The current nitrogen dioxide (NO2) concentration at Philadelphia, Pennsylvania is 13.347 ppb.
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