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)
32
Good
Allentown, Pennsylvania
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
3.78 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
16.91 μg/m³
0
55
155
255
425
605+
35.37 ppb
0
55
71
86
201
201+
0.45 ppb
0
36
76
186
605
1005+
7.54 ppb
0
54
101
361
1250
2050+
0.24 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Moderate
Allentown, Pennsylvania
Allentown, Pennsylvania
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AQI 33
Good
4.10μg/m³
PM2.5
18.00μg/m³
PM10
36.04ppb
O3
0.46ppb
SO2
7.54ppb
NO2
0.26ppm
CO
AQI 34
Good
4.19μg/m³
PM2.5
18.52μg/m³
PM10
36.64ppb
O3
0.45ppb
SO2
7.39ppb
NO2
0.26ppm
CO
AQI 33
Good
4.14μg/m³
PM2.5
18.25μg/m³
PM10
36.30ppb
O3
0.46ppb
SO2
7.49ppb
NO2
0.26ppm
CO
AQI 34
Good
4.21μg/m³
PM2.5
18.58μg/m³
PM10
36.71ppb
O3
0.46ppb
SO2
7.38ppb
NO2
0.26ppm
CO
AQI 34
Good
3.94μg/m³
PM2.5
17.23μg/m³
PM10
36.81ppb
O3
0.47ppb
SO2
7.43ppb
NO2
0.26ppm
CO
AQI 33
Good
4.08μg/m³
PM2.5
17.91μg/m³
PM10
36.36ppb
O3
0.46ppb
SO2
7.50ppb
NO2
0.26ppm
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 11:00:00 on 2026-04-24.
In the last 24 hours, the best air quality in Allentown, Pennsylvania was observed at 08:00:00 on 2026-04-25.
As of now, the AQI in Allentown, Pennsylvania is 33, indicating Good conditions.
Allentown, Pennsylvania air has the highest levels of O3.
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 4.104 μg/m3.
The PM10 concentration in Allentown, Pennsylvania is 18.028 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Allentown, Pennsylvania is 0.262 ppm.
Currently, Allentown, Pennsylvania has a sulfur dioxide (SO2) concentration of 0.456 ppb.
The current ozone (O3) level in Allentown, Pennsylvania at the moment is 36.097 ppm.
Nitrogen dioxide (NO2) level in Allentown, Pennsylvania at the moment is 7.528 ppb.
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