Hourly Weather | Today Monday, September 14, 2026
Allentown, Pennsylvania
12 PM
Cloudy Weather
72°
Feels Like 73°
0
Humidity: 49%
UV Index: 5
Wind: 10 mph
1 PM
Cloudy Weather
73°
Feels Like 75°
0
Humidity: 46%
UV Index: 6
Wind: 10 mph
2 PM
Cloudy Weather
73°
Feels Like 75°
0
Humidity: 43%
UV Index: 5
Wind: 10 mph
3 PM
Cloudy Weather
75°
Feels Like 77°
0
Humidity: 40%
UV Index: 4
Wind: 10 mph
4 PM
Cloudy Weather
73°
Feels Like 75°
0
Humidity: 41%
UV Index: 3
Wind: 9 mph
5 PM
Cloudy Weather
72°
Feels Like 72°
0
Humidity: 43%
UV Index: 2
Wind: 9 mph
6 PM
Cloudy Weather
72°
Feels Like 70°
0
Humidity: 45%
UV Index: 1
Wind: 8 mph
7 PM
Cloudy Weather
68°
Feels Like 64°
0
Humidity: 51%
UV Index: 0
Wind: 7 mph
8 PM
Night
64°
Feels Like 63°
0
Humidity: 56%
UV Index: 0
Wind: 6 mph
9 PM
Night
63°
Feels Like 61°
0
Humidity: 61%
UV Index: 0
Wind: 6 mph
10 PM
Night
57°
Feels Like 57°
0
Humidity: 67%
UV Index: 0
Wind: 6 mph
11 PM
Night
55°
Feels Like 54°
0
Humidity: 74%
UV Index: 0
Wind: 5 mph

Hourly Air Quality Forecast - AQI (US EPA)

12 PM
32 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.78 µg/m³
  • PM10: 3.42 µg/m³
  • O3: 0.035 ppm
  • NO2: 0.9 ppb
  • SO2: 0.6 ppb
  • CO: 0.15 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

1 PM
36 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.54 µg/m³
  • PM10: 3.1 µg/m³
  • O3: 0.039 ppm
  • NO2: 0.7 ppb
  • SO2: 0.5 ppb
  • CO: 0.16 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

2 PM
38 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.53 µg/m³
  • PM10: 3.07 µg/m³
  • O3: 0.042 ppm
  • NO2: 0.6 ppb
  • SO2: 0.6 ppb
  • CO: 0.17 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

3 PM
40 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.45 µg/m³
  • PM10: 2.97 µg/m³
  • O3: 0.043 ppm
  • NO2: 0.6 ppb
  • SO2: 0.6 ppb
  • CO: 0.18 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

4 PM
41 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.2 µg/m³
  • PM10: 2.69 µg/m³
  • O3: 0.045 ppm
  • NO2: 0.6 ppb
  • SO2: 0.5 ppb
  • CO: 0.19 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

5 PM
41 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2 µg/m³
  • PM10: 2.5 µg/m³
  • O3: 0.045 ppm
  • NO2: 0.8 ppb
  • SO2: 0.5 ppb
  • CO: 0.20 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

6 PM
38 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.89 µg/m³
  • PM10: 2.55 µg/m³
  • O3: 0.041 ppm
  • NO2: 1.3 ppb
  • SO2: 0.5 ppb
  • CO: 0.21 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

7 PM
33 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.88 µg/m³
  • PM10: 2.89 µg/m³
  • O3: 0.036 ppm
  • NO2: 2.4 ppb
  • SO2: 0.6 ppb
  • CO: 0.22 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

8 PM
29 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.87 µg/m³
  • PM10: 3.29 µg/m³
  • O3: 0.032 ppm
  • NO2: 3.2 ppb
  • SO2: 0.6 ppb
  • CO: 0.23 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

9 PM
26 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.86 µg/m³
  • PM10: 3.59 µg/m³
  • O3: 0.029 ppm
  • NO2: 3.6 ppb
  • SO2: 0.7 ppb
  • CO: 0.24 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

10 PM
24 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.83 µg/m³
  • PM10: 3.76 µg/m³
  • O3: 0.026 ppm
  • NO2: 3.7 ppb
  • SO2: 0.7 ppb
  • CO: 0.25 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

11 PM
22 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.75 µg/m³
  • PM10: 3.68 µg/m³
  • O3: 0.024 ppm
  • NO2: 3.8 ppb
  • SO2: 0.7 ppb
  • CO: 0.25 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.