Stay updated with real-time air quality in Upper Darby, 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)
27
Good
Upper Darby, Pennsylvania
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
4.34 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
19.00 μg/m³
0
55
155
255
425
605+
28.70 ppb
0
55
71
86
201
201+
0.80 ppb
0
36
76
186
605
1005+
7.05 ppb
0
54
101
361
1250
2050+
0.34 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Moderate
Upper Darby, Pennsylvania
Upper Darby, Pennsylvania
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AQI 23
Good
4.29μg/m³
PM2.5
18.89μg/m³
PM10
25.07ppb
O3
0.89ppb
SO2
7.66ppb
NO2
0.32ppm
CO
AQI 23
Good
4.29μg/m³
PM2.5
18.89μg/m³
PM10
25.07ppb
O3
0.89ppb
SO2
7.66ppb
NO2
0.32ppm
CO
AQI 24
Good
4.35μg/m³
PM2.5
19.17μg/m³
PM10
25.98ppb
O3
0.86ppb
SO2
7.46ppb
NO2
0.31ppm
CO
AQI 26
Good
3.83μg/m³
PM2.5
13.41μg/m³
PM10
28.45ppb
O3
0.85ppb
SO2
6.41ppb
NO2
0.29ppm
CO
AQI 26
Good
4.35μg/m³
PM2.5
21.25μg/m³
PM10
28.04ppb
O3
0.84ppb
SO2
6.11ppb
NO2
0.29ppm
CO
AQI 23
Good
4.18μg/m³
PM2.5
18.27μg/m³
PM10
25.11ppb
O3
0.92ppb
SO2
8.56ppb
NO2
0.38ppm
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 Upper Darby, Pennsylvania is updated every hour.
The worst air quality in Upper Darby, Pennsylvania in the last 24 hours was observed at 07:00:00 on 2026-06-07.
In the last 24 hrs, the best air quality in Upper Darby, Pennsylvania was observed at 01:00:00 on 2026-06-08.
The current air quality in Upper Darby, Pennsylvania is 27, categorized as Good based on real-time data.
The most common pollutant in Upper Darby, Pennsylvania is PM2.5.
If the air quality in Upper Darby, Pennsylvania is poor, consider staying indoors and wearing a mask to protect yourself.
The current PM2.5 concentration at Upper Darby, Pennsylvania is 4.618 μg/m3.
The current PM10 concentration at Upper Darby, Pennsylvania is 20.366 μg/m3.
The current carbon monoxide (CO) concentration at Upper Darby, Pennsylvania is 0.335 ppm.
The current sulfur dioxide (SO2) concentration at Upper Darby, Pennsylvania is 0.869 ppb.
The current ozone (O3) concentration at Upper Darby, Pennsylvania is 25.259 ppm.
The current nitrogen dioxide (NO2) concentration at Upper Darby, Pennsylvania is 7.777 ppb.
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