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)
24
Good
Philadelphia, Pennsylvania
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
2.90 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
11.94 μg/m³
0
55
155
255
425
605+
25.99 ppb
0
55
71
86
201
201+
0.65 ppb
0
36
76
186
605
1005+
8.93 ppb
0
54
101
361
1250
2050+
0.23 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
High
Philadelphia, Pennsylvania
Philadelphia, Pennsylvania
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AQI 26
Good
2.63μg/m³
PM2.5
10.75μg/m³
PM10
28.34ppb
O3
0.52ppb
SO2
5.16ppb
NO2
0.23ppm
CO
AQI 27
Good
2.67μg/m³
PM2.5
11.45μg/m³
PM10
28.75ppb
O3
0.87ppb
SO2
6.82ppb
NO2
0.13ppm
CO
AQI 26
Good
2.78μg/m³
PM2.5
12.30μg/m³
PM10
28.40ppb
O3
0.72ppb
SO2
6.86ppb
NO2
0.15ppm
CO
AQI 26
Good
2.41μg/m³
PM2.5
9.98μg/m³
PM10
28.11ppb
O3
0.50ppb
SO2
5.68ppb
NO2
0.24ppm
CO
AQI 27
Good
2.52μg/m³
PM2.5
10.54μg/m³
PM10
28.70ppb
O3
0.43ppb
SO2
6.83ppb
NO2
0.25ppm
CO
AQI 25
Good
3.17μg/m³
PM2.5
15.44μg/m³
PM10
27.49ppb
O3
0.47ppb
SO2
8.52ppb
NO2
0.21ppm
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 01:00:00 on 2026-10-22.
In the last 24 hrs, the best air quality in Philadelphia, Pennsylvania was observed at 08:00:00 on 2026-10-22.
The current air quality in Philadelphia, Pennsylvania is 26, categorized as Good based on real-time data.
The most common pollutant in Philadelphia, Pennsylvania is O3.
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 2.601 μg/m3.
The current PM10 concentration at Philadelphia, Pennsylvania is 10.638 μg/m3.
The current carbon monoxide (CO) concentration at Philadelphia, Pennsylvania is 0.223 ppm.
The current sulfur dioxide (SO2) concentration at Philadelphia, Pennsylvania is 0.524 ppb.
The current ozone (O3) concentration at Philadelphia, Pennsylvania is 28.392 ppm.
The current nitrogen dioxide (NO2) concentration at Philadelphia, Pennsylvania is 5.328 ppb.
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