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

Good
Fine
Moderate
Poor
Very poor
Hazardous
3.60 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
16.00 μg/m³
0
55
155
255
425
605+
11.52 ppb
0
55
71
86
201
201+
0.44 ppb
0
36
76
186
605
1005+
6.17 ppb
0
54
101
361
1250
2050+
0.27 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Allentown, Pennsylvania
Allentown, Pennsylvania
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AQI 16
Good
3.22μg/m³
PM2.5
14.02μg/m³
PM10
12.93ppb
O3
0.32ppb
SO2
9.43ppb
NO2
0.38ppm
CO
AQI 22
Good
3.61μg/m³
PM2.5
15.07μg/m³
PM10
12.87ppb
O3
0.32ppb
SO2
9.20ppb
NO2
0.38ppm
CO
AQI 22
Good
3.51μg/m³
PM2.5
14.79μg/m³
PM10
12.66ppb
O3
0.33ppb
SO2
9.20ppb
NO2
0.38ppm
CO
AQI 22
Good
3.59μg/m³
PM2.5
14.95μg/m³
PM10
13.10ppb
O3
0.32ppb
SO2
9.14ppb
NO2
0.38ppm
CO
AQI 16
Good
3.07μg/m³
PM2.5
12.49μg/m³
PM10
11.36ppb
O3
0.32ppb
SO2
8.22ppb
NO2
0.38ppm
CO
AQI 16
Good
3.28μg/m³
PM2.5
13.83μg/m³
PM10
12.49ppb
O3
0.32ppb
SO2
8.98ppb
NO2
0.38ppm
CO
Air quality and pollutant data for Pennsylvania, USA are sourced from ground-based monitors and satellites, adhering to US EPA standards. Machine learning and advanced algorithms enhance the data by incorporating local variables like traffic and population density, ensuring high accuracy and dependability.
Source: Ambee Data Sources
The air quality information for Allentown, Pennsylvania is updated every hour for accuracy.
In the past 24 hours, the air quality in Allentown, Pennsylvania was at its worst at 03:00:00 on 2026-08-06.
In the last 24 hours, the best air quality in Allentown, Pennsylvania was observed at 05:00:00 on 2026-08-06.
As of now, the AQI in Allentown, Pennsylvania is 16, indicating Good conditions.
Allentown, Pennsylvania air has the highest levels of PM2.5.
Poor air quality in Allentown, Pennsylvania means it's advisable to stay indoors and wear a mask for your protection.
PM2.5 levels in Allentown, Pennsylvania are currently 3.393 μg/m3.
The PM10 concentration in Allentown, Pennsylvania is 14.928 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Allentown, Pennsylvania is 0.316 ppm.
Currently, Allentown, Pennsylvania has a sulfur dioxide (SO2) concentration of 0.395 ppb.
The current ozone (O3) level in Allentown, Pennsylvania at the moment is 8.231 ppm.
Nitrogen dioxide (NO2) level in Allentown, Pennsylvania at the moment is 9.942 ppb.
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