Hourly Weather | Today Monday, September 21, 2026
Lancaster, Pennsylvania
3 PM
Cloudy Weather
68°
Feels Like 66°
47
Humidity: 69%
UV Index: 1
Wind: 8 mph
4 PM
Cloudy Weather
66°
Feels Like 64°
42
Humidity: 71%
UV Index: 1
Wind: 8 mph
5 PM
Cloudy Weather
66°
Feels Like 64°
42
Humidity: 73%
UV Index: 1
Wind: 7 mph
6 PM
Rainy Weather
64°
Feels Like 61°
46
Humidity: 76%
UV Index: 0
Wind: 7 mph
7 PM
Cloudy Weather
64°
Feels Like 63°
42
Humidity: 78%
UV Index: 0
Wind: 7 mph
8 PM
Cloudy Weather
63°
Feels Like 61°
49
Humidity: 84%
UV Index: 0
Wind: 7 mph
9 PM
Rainy Weather
61°
Feels Like 57°
61
Humidity: 89%
UV Index: 0
Wind: 7 mph
10 PM
Rainy Weather
61°
Feels Like 57°
61
Humidity: 90%
UV Index: 0
Wind: 7 mph
11 PM
Cloudy Weather
61°
Feels Like 59°
49
Humidity: 92%
UV Index: 0
Wind: 7 mph

Hourly Air Quality Forecast - AQI (US EPA)

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

Pollutant Concentrations:

  • PM2.5: 3.13 µg/m³
  • PM10: 3.92 µg/m³
  • O3: 0.027 ppm
  • NO2: 4 ppb
  • SO2: 0.9 ppb
  • CO: 0.20 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.86 µg/m³
  • PM10: 4.76 µg/m³
  • O3: 0.031 ppm
  • NO2: 4.2 ppb
  • SO2: 0.9 ppb
  • CO: 0.20 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.42 µg/m³
  • PM10: 5.4 µg/m³
  • O3: 0.033 ppm
  • NO2: 4.7 ppb
  • SO2: 1 ppb
  • CO: 0.20 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.89 µg/m³
  • PM10: 5.92 µg/m³
  • O3: 0.033 ppm
  • NO2: 5.8 ppb
  • SO2: 1.1 ppb
  • CO: 0.20 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.26 µg/m³
  • PM10: 6.39 µg/m³
  • O3: 0.033 ppm
  • NO2: 6.6 ppb
  • SO2: 1.2 ppb
  • CO: 0.21 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: 5.52 µg/m³
  • PM10: 6.79 µg/m³
  • O3: 0.032 ppm
  • NO2: 6.9 ppb
  • SO2: 1.2 ppb
  • CO: 0.21 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.49 µg/m³
  • PM10: 6.78 µg/m³
  • O3: 0.030 ppm
  • NO2: 6.7 ppb
  • SO2: 1.3 ppb
  • CO: 0.21 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: 5.25 µg/m³
  • PM10: 6.42 µg/m³
  • O3: 0.030 ppm
  • NO2: 6.3 ppb
  • SO2: 1.2 ppb
  • CO: 0.21 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: 4.85 µg/m³
  • PM10: 5.9 µg/m³
  • O3: 0.029 ppm
  • NO2: 5.7 ppb
  • SO2: 1 ppb
  • CO: 0.20 ppm

Health Recommendations:

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