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)
33
Good
Pennsylvania, USA
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
4.28 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
18.05 μg/m³
0
55
155
255
425
605+
35.62 ppb
0
55
71
86
201
201+
0.56 ppb
0
36
76
186
605
1005+
2.42 ppb
0
54
101
361
1250
2050+
0.28 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 31
Good
3.49μg/m³
PM2.5
14.39μg/m³
PM10
34.18ppb
O3
0.22ppb
SO2
1.86ppb
NO2
0.21ppm
CO
AQI 25
Good
3.16μg/m³
PM2.5
12.93μg/m³
PM10
27.39ppb
O3
0.71ppb
SO2
3.40ppb
NO2
0.37ppm
CO
AQI 28
Good
4.08μg/m³
PM2.5
17.40μg/m³
PM10
29.98ppb
O3
0.55ppb
SO2
2.72ppb
NO2
0.28ppm
CO
AQI 28
Good
3.15μg/m³
PM2.5
12.87μg/m³
PM10
30.25ppb
O3
0.42ppb
SO2
2.77ppb
NO2
0.30ppm
CO
AQI 24
Good
2.56μg/m³
PM2.5
7.95μg/m³
PM10
25.93ppb
O3
0.34ppb
SO2
5.18ppb
NO2
0.25ppm
CO
AQI 33
Good
5.71μg/m³
PM2.5
22.70μg/m³
PM10
34.82ppb
O3
0.92ppb
SO2
2.98ppb
NO2
0.25ppm
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 11:00:00 on 2026-09-12.
In the last 24 hrs, the best air quality in Pennsylvania, USA was observed at 12:00:00 on 2026-09-13.
The current air quality in Pennsylvania, USA is 31, categorized as Good based on real-time data.
The most common pollutant in Pennsylvania, USA is O3.
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 4.315 μg/m3.
The current PM10 concentration at Pennsylvania, USA is 18.544 μg/m3.
The current carbon monoxide (CO) concentration at Pennsylvania, USA is 0.307 ppm.
The current sulfur dioxide (SO2) concentration at Pennsylvania, USA is 0.613 ppb.
The current ozone (O3) concentration at Pennsylvania, USA is 33.028 ppm.
The current nitrogen dioxide (NO2) concentration at Pennsylvania, USA is 2.608 ppb.
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