Hourly Weather | Today Tuesday, July 21, 2026
Lancaster, Pennsylvania
5 AM
Stormy Weather
70°
Feels Like 66°
51
Humidity: 95%
UV Index: 0
Wind: 6 mph
6 AM
Cloudy Weather
70°
Feels Like 70°
47
Humidity: 96%
UV Index: 0
Wind: 6 mph
7 AM
Cloudy Weather
70°
Feels Like 72°
40
Humidity: 98%
UV Index: 0
Wind: 7 mph
8 AM
Cloudy Weather
70°
Feels Like 73°
34
Humidity: 98%
UV Index: 1
Wind: 7 mph
9 AM
Cloudy Weather
73°
Feels Like 77°
34
Humidity: 96%
UV Index: 1
Wind: 7 mph
10 AM
Cloudy Weather
73°
Feels Like 81°
40
Humidity: 94%
UV Index: 1
Wind: 7 mph
11 AM
Stormy Weather
75°
Feels Like 79°
66
Humidity: 92%
UV Index: 1
Wind: 8 mph
12 PM
Stormy Weather
79°
Feels Like 82°
66
Humidity: 87%
UV Index: 2
Wind: 8 mph
1 PM
Cloudy Weather
81°
Feels Like 90°
49
Humidity: 81%
UV Index: 3
Wind: 9 mph
2 PM
Cloudy Weather
82°
Feels Like 91°
49
Humidity: 75%
UV Index: 3
Wind: 11 mph
3 PM
Stormy Weather
81°
Feels Like 86°
71
Humidity: 85%
UV Index: 1
Wind: 11 mph
4 PM
Stormy Weather
79°
Feels Like 81°
71
Humidity: 82%
UV Index: 1
Wind: 11 mph
5 PM
Cloudy Weather
79°
Feels Like 84°
40
Humidity: 83%
UV Index: 1
Wind: 9 mph
6 PM
Cloudy Weather
79°
Feels Like 84°
34
Humidity: 82%
UV Index: 1
Wind: 9 mph
7 PM
Cloudy Weather
79°
Feels Like 82°
39
Humidity: 84%
UV Index: 1
Wind: 9 mph
8 PM
Cloudy Weather
77°
Feels Like 81°
49
Humidity: 87%
UV Index: 0
Wind: 9 mph
9 PM
Cloudy Weather
75°
Feels Like 79°
49
Humidity: 91%
UV Index: 0
Wind: 8 mph
10 PM
Stormy Weather
73°
Feels Like 73°
66
Humidity: 95%
UV Index: 0
Wind: 8 mph
11 PM
Cloudy Weather
72°
Feels Like 75°
49
Humidity: 97%
UV Index: 0
Wind: 7 mph

Hourly Air Quality Forecast - AQI (US EPA)

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

Pollutant Concentrations:

  • PM2.5: 9.9 µg/m³
  • PM10: 11.28 µg/m³
  • O3: 0.041 ppm
  • NO2: 2.1 ppb
  • SO2: 0.7 ppb
  • CO: 0.29 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 9.24 µg/m³
  • PM10: 10.23 µg/m³
  • O3: 0.035 ppm
  • NO2: 2.5 ppb
  • SO2: 0.7 ppb
  • CO: 0.26 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 8.63 µg/m³
  • PM10: 9.36 µg/m³
  • O3: 0.029 ppm
  • NO2: 3.5 ppb
  • SO2: 0.7 ppb
  • CO: 0.24 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 7.97 µg/m³
  • PM10: 8.58 µg/m³
  • O3: 0.023 ppm
  • NO2: 4.9 ppb
  • SO2: 0.7 ppb
  • CO: 0.22 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 6.99 µg/m³
  • PM10: 7.5 µg/m³
  • O3: 0.020 ppm
  • NO2: 5.6 ppb
  • SO2: 0.8 ppb
  • CO: 0.20 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 6.13 µg/m³
  • PM10: 6.58 µg/m³
  • O3: 0.019 ppm
  • NO2: 5.5 ppb
  • SO2: 0.8 ppb
  • CO: 0.18 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.56 µg/m³
  • PM10: 5.97 µg/m³
  • O3: 0.018 ppm
  • NO2: 5.4 ppb
  • SO2: 0.8 ppb
  • CO: 0.17 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.67 µg/m³
  • PM10: 5.01 µg/m³
  • O3: 0.022 ppm
  • NO2: 4.3 ppb
  • SO2: 0.8 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.97 µg/m³
  • PM10: 4.24 µg/m³
  • O3: 0.029 ppm
  • NO2: 3 ppb
  • SO2: 0.7 ppb
  • CO: 0.13 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: 3.95 µg/m³
  • PM10: 4.19 µg/m³
  • O3: 0.035 ppm
  • NO2: 2.1 ppb
  • SO2: 0.6 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.04 µg/m³
  • PM10: 4.28 µg/m³
  • O3: 0.040 ppm
  • NO2: 2.1 ppb
  • SO2: 0.6 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.8 µg/m³
  • PM10: 4.08 µg/m³
  • O3: 0.039 ppm
  • NO2: 3.1 ppb
  • SO2: 0.7 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.38 µg/m³
  • PM10: 3.66 µg/m³
  • O3: 0.035 ppm
  • NO2: 4.6 ppb
  • SO2: 0.7 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.07 µg/m³
  • PM10: 3.32 µg/m³
  • O3: 0.031 ppm
  • NO2: 6.1 ppb
  • SO2: 0.7 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.99 µg/m³
  • PM10: 3.23 µg/m³
  • O3: 0.029 ppm
  • NO2: 6.1 ppb
  • SO2: 0.7 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.07 µg/m³
  • PM10: 3.29 µg/m³
  • O3: 0.028 ppm
  • NO2: 5.2 ppb
  • SO2: 0.6 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.17 µg/m³
  • PM10: 3.34 µg/m³
  • O3: 0.029 ppm
  • NO2: 4 ppb
  • SO2: 0.5 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.07 µg/m³
  • PM10: 3.22 µg/m³
  • O3: 0.029 ppm
  • NO2: 3.4 ppb
  • SO2: 0.5 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.64 µg/m³
  • PM10: 2.75 µg/m³
  • O3: 0.029 ppm
  • NO2: 3.1 ppb
  • SO2: 0.4 ppb
  • CO: 0.12 ppm

Health Recommendations:

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