Hourly Weather | Today Monday, January 19, 2026
Allentown, Pennsylvania
4 AM
Cloudy Night
16°
Feels Like
7
Humidity: 81%
Wind: 7 mph
UV Index: 0
5 AM
Cloudy Night
16°
Feels Like
7
Humidity: 82%
Wind: 7 mph
UV Index: 0
6 AM
Cloudy Night
16°
Feels Like
5
Humidity: 83%
Wind: 6 mph
UV Index: 0
7 AM
Cloudy Night
16°
Feels Like 10°
0
Humidity: 76%
Wind: 6 mph
UV Index: 0
8 AM
Cloudy Weather
14°
Feels Like 10°
0
Humidity: 83%
Wind: 7 mph
UV Index: 1
9 AM
Cloudy Weather
18°
Feels Like 14°
0
Humidity: 76%
Wind: 7 mph
UV Index: 1
10 AM
Cloudy Weather
21°
Feels Like 18°
0
Humidity: 70%
Wind: 8 mph
UV Index: 2
11 AM
Cloudy Weather
27°
Feels Like 19°
0
Humidity: 65%
Wind: 9 mph
UV Index: 2
12 PM
Cloudy Weather
28°
Feels Like 21°
0
Humidity: 61%
Wind: 12 mph
UV Index: 2
1 PM
Cloudy Weather
28°
Feels Like 18°
0
Humidity: 61%
Wind: 15 mph
UV Index: 2
2 PM
Cloudy Weather
30°
Feels Like 19°
0
Humidity: 59%
Wind: 16 mph
UV Index: 2
3 PM
Cloudy Weather
32°
Feels Like 19°
0
Humidity: 55%
Wind: 15 mph
UV Index: 1
4 PM
Cloudy Weather
30°
Feels Like 18°
0
Humidity: 57%
Wind: 15 mph
UV Index: 1
5 PM
Cloudy Weather
28°
Feels Like 14°
0
Humidity: 59%
Wind: 15 mph
UV Index: 0
6 PM
Cloudy Night
27°
Feels Like 12°
0
Humidity: 59%
Wind: 15 mph
UV Index: 0
7 PM
Cloudy Night
27°
Feels Like
0
Humidity: 59%
Wind: 18 mph
UV Index: 0
8 PM
Cloudy Night
25°
Feels Like
0
Humidity: 58%
Wind: 17 mph
UV Index: 0
9 PM
Cloudy Night
21°
Feels Like
0
Humidity: 59%
Wind: 17 mph
UV Index: 0
10 PM
Cloudy Night
19°
Feels Like
0
Humidity: 60%
Wind: 17 mph
UV Index: 0
11 PM
Cloudy Night
19°
Feels Like
0
Humidity: 58%
Wind: 16 mph
UV Index: 0

Hourly Air Quality Forecast - AQI (US EPA)

4 AM
22 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 3.44 µg/m³
  • PM10: 5.32 µg/m³
  • O3: 0.023 ppm
  • NO2: 5.4 ppb
  • SO2: 1.3 ppb
  • CO: 0.18 ppm

Health Recommendations:

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

5 AM
20 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 4.08 µg/m³
  • PM10: 6.22 µg/m³
  • O3: 0.022 ppm
  • NO2: 6 ppb
  • SO2: 1.3 ppb
  • CO: 0.18 ppm

Health Recommendations:

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

6 AM
20 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 4.72 µg/m³
  • PM10: 7.07 µg/m³
  • O3: 0.020 ppm
  • NO2: 6.7 ppb
  • SO2: 1.4 ppb
  • CO: 0.19 ppm

Health Recommendations:

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

7 AM
24 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 5.7 µg/m³
  • PM10: 8.57 µg/m³
  • O3: 0.019 ppm
  • NO2: 8.4 ppb
  • SO2: 1.6 ppb
  • CO: 0.20 ppm

Health Recommendations:

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

8 AM
29 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 6.86 µg/m³
  • PM10: 10.57 µg/m³
  • O3: 0.017 ppm
  • NO2: 11.4 ppb
  • SO2: 1.9 ppb
  • CO: 0.22 ppm

Health Recommendations:

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

9 AM
33 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 8.02 µg/m³
  • PM10: 12.62 µg/m³
  • O3: 0.018 ppm
  • NO2: 12.4 ppb
  • SO2: 2.4 ppb
  • CO: 0.24 ppm

Health Recommendations:

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

10 AM
38 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 9.08 µg/m³
  • PM10: 14.34 µg/m³
  • O3: 0.021 ppm
  • NO2: 10.9 ppb
  • SO2: 2.8 ppb
  • CO: 0.24 ppm

Health Recommendations:

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

11 AM
33 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 7.85 µg/m³
  • PM10: 12.21 µg/m³
  • O3: 0.026 ppm
  • NO2: 7.9 ppb
  • SO2: 2.6 ppb
  • CO: 0.22 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.9 µg/m³
  • PM10: 8.79 µg/m³
  • O3: 0.030 ppm
  • NO2: 5.3 ppb
  • SO2: 1.7 ppb
  • CO: 0.19 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.31 µg/m³
  • PM10: 6.19 µg/m³
  • O3: 0.033 ppm
  • NO2: 3.6 ppb
  • SO2: 1.1 ppb
  • CO: 0.17 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.48 µg/m³
  • PM10: 4.84 µg/m³
  • O3: 0.036 ppm
  • NO2: 2.8 ppb
  • SO2: 0.9 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.4 µg/m³
  • PM10: 4.62 µg/m³
  • O3: 0.037 ppm
  • NO2: 2.6 ppb
  • SO2: 0.9 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.62 µg/m³
  • PM10: 4.86 µg/m³
  • O3: 0.038 ppm
  • NO2: 3 ppb
  • SO2: 0.9 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.75 µg/m³
  • PM10: 5 µg/m³
  • O3: 0.038 ppm
  • NO2: 3.6 ppb
  • SO2: 0.9 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.63 µg/m³
  • PM10: 4.73 µg/m³
  • O3: 0.039 ppm
  • NO2: 3.7 ppb
  • SO2: 1.2 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.27 µg/m³
  • PM10: 4.2 µg/m³
  • O3: 0.041 ppm
  • NO2: 3.6 ppb
  • SO2: 1.7 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.42 µg/m³
  • PM10: 3.19 µg/m³
  • O3: 0.042 ppm
  • NO2: 3.5 ppb
  • SO2: 1.7 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.56 µg/m³
  • PM10: 2.23 µg/m³
  • O3: 0.042 ppm
  • NO2: 3.3 ppb
  • SO2: 1.4 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.12 µg/m³
  • PM10: 1.77 µg/m³
  • O3: 0.042 ppm
  • NO2: 3 ppb
  • SO2: 1.1 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 0.97 µg/m³
  • PM10: 1.62 µg/m³
  • O3: 0.040 ppm
  • NO2: 2.8 ppb
  • SO2: 0.9 ppb
  • CO: 0.15 ppm

Health Recommendations:

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