Stay updated with real-time air quality in Pennsylvania, USA 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)
22
Good
Pennsylvania, USA
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
3.77 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
16.26 μg/m³
0
55
155
255
425
605+
22.27 ppb
0
55
71
86
201
201+
0.80 ppb
0
36
76
186
605
1005+
6.68 ppb
0
54
101
361
1250
2050+
0.24 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Moderate
Pennsylvania, USA
Pennsylvania, USA
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| City | AQI | PM2.5 | PM10 | O3 | SO2 | NO2 | CO |
|---|---|---|---|---|---|---|---|
AQI 33
Good
6.06μg/m³
PM2.5
22.21μg/m³
PM10
21.09ppb
O3
0.28ppb
SO2
7.02ppb
NO2
0.23ppm
CO
AQI 22
Good
3.56μg/m³
PM2.5
16.99μg/m³
PM10
19.96ppb
O3
0.83ppb
SO2
7.46ppb
NO2
0.18ppm
CO
AQI 21
Good
2.30μg/m³
PM2.5
9.65μg/m³
PM10
23.47ppb
O3
0.62ppb
SO2
5.02ppb
NO2
0.14ppm
CO
AQI 27
Good
5.39μg/m³
PM2.5
22.46μg/m³
PM10
19.31ppb
O3
0.34ppb
SO2
7.06ppb
NO2
0.25ppm
CO
AQI 29
Good
2.04μg/m³
PM2.5
11.16μg/m³
PM10
31.36ppb
O3
0.31ppb
SO2
4.39ppb
NO2
0.10ppm
CO
AQI 22
Good
3.65μg/m³
PM2.5
15.00μg/m³
PM10
14.88ppb
O3
0.89ppb
SO2
5.47ppb
NO2
0.18ppm
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 Pennsylvania, USA is updated every hour.
The worst air quality in Pennsylvania, USA in the last 24 hours was observed at 09:00:00 on 2026-05-20.
In the last 24 hrs, the best air quality in Pennsylvania, USA was observed at 08:00:00 on 2026-05-21.
The current air quality in Pennsylvania, USA is 22, categorized as Good based on real-time data.
The most common pollutant in Pennsylvania, USA is PM2.5.
If the air quality in Pennsylvania, USA is poor, consider staying indoors and wearing a mask to protect yourself.
The current PM2.5 concentration at Pennsylvania, USA is 3.88 μg/m3.
The current PM10 concentration at Pennsylvania, USA is 17.016 μg/m3.
The current carbon monoxide (CO) concentration at Pennsylvania, USA is 0.218 ppm.
The current sulfur dioxide (SO2) concentration at Pennsylvania, USA is 0.711 ppb.
The current ozone (O3) concentration at Pennsylvania, USA is 20.84 ppm.
The current nitrogen dioxide (NO2) concentration at Pennsylvania, USA is 6.372 ppb.
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