Stay updated with real-time air quality in Upper Allen, 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)
33
Good
Upper Allen, Pennsylvania
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
5.69 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
25.18 μg/m³
0
55
155
255
425
605+
22.34 ppb
0
55
71
86
201
201+
4.37 ppb
0
36
76
186
605
1005+
13.09 ppb
0
54
101
361
1250
2050+
0.31 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
High
Upper Allen, Pennsylvania
Upper Allen, Pennsylvania
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AQI 49
Good
9.37μg/m³
PM2.5
41.82μg/m³
PM10
45.13ppb
O3
0.49ppb
SO2
12.15ppb
NO2
0.30ppm
CO
AQI 49
Good
9.34μg/m³
PM2.5
41.69μg/m³
PM10
45.31ppb
O3
0.48ppb
SO2
12.23ppb
NO2
0.30ppm
CO
AQI 49
Good
9.37μg/m³
PM2.5
41.82μg/m³
PM10
45.20ppb
O3
0.51ppb
SO2
12.29ppb
NO2
0.30ppm
CO
AQI 49
Good
9.39μg/m³
PM2.5
41.91μg/m³
PM10
44.98ppb
O3
0.49ppb
SO2
12.10ppb
NO2
0.30ppm
CO
AQI 49
Good
9.18μg/m³
PM2.5
40.31μg/m³
PM10
47.18ppb
O3
0.49ppb
SO2
10.99ppb
NO2
0.30ppm
CO
AQI 49
Good
9.32μg/m³
PM2.5
41.57μg/m³
PM10
45.36ppb
O3
0.51ppb
SO2
12.29ppb
NO2
0.30ppm
CO
Air quality measurements for Pennsylvania, USA meet strict US EPA standards. These measurements are collected from reliable sources, including satellites and ground-based monitoring systems. Advanced algorithms and machine learning techniques are applied to the data, factoring in variables such as traffic and population density, to ensure precision and reliability.
Source: Ambee Data Sources
Air quality data for Upper Allen, Pennsylvania is updated on an hourly basis.
The worst air quality in Upper Allen, Pennsylvania was recorded at 10:00:00 on 2026-04-23.
The best air quality in Upper Allen, Pennsylvania was recorded at 02:00:00 on 2026-04-24.
The real-time air quality index in Upper Allen, Pennsylvania is 33, currently categorized as Good.
The most common pollutant in Upper Allen, Pennsylvania is PM2.5.
If the air quality in Upper Allen, Pennsylvania is poor, limit outdoor activities and use a mask to safeguard your health.
The measured PM2.5 levels in Upper Allen, Pennsylvania at present are 5.693 μg/m3.
The current PM10 levels in Upper Allen, Pennsylvania are 25.185 μg/m3.
The current carbon monoxide (CO) level in Upper Allen, Pennsylvania is 0.307 ppm.
The current sulfur dioxide (SO2) levels in Upper Allen, Pennsylvania are 4.367 ppb.
The current ozone (O3) levels at Upper Allen, Pennsylvania is 22.344 ppm.
The current nitrogen dioxide (NO2) levels at Upper Allen, Pennsylvania is 13.085 ppb.
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