Hourly Weather | Today Tuesday, September 1, 2026
Lancaster, Pennsylvania
12 PM
Cloudy Weather
82°
Feels Like 91°
47
Humidity: 74%
UV Index: 3
Wind: 8 mph
1 PM
Cloudy Weather
84°
Feels Like 93°
47
Humidity: 69%
UV Index: 3
Wind: 9 mph
2 PM
Sunny with a Chance of Thunderstorms
86°
Feels Like 93°
51
Humidity: 74%
UV Index: 2
Wind: 9 mph
3 PM
Cloudy Weather
88°
Feels Like 97°
47
Humidity: 60%
UV Index: 5
Wind: 9 mph
4 PM
Cloudy Weather
90°
Feels Like 97°
40
Humidity: 58%
UV Index: 4
Wind: 9 mph
5 PM
Cloudy Weather
88°
Feels Like 95°
34
Humidity: 60%
UV Index: 2
Wind: 9 mph
6 PM
Cloudy Weather
86°
Feels Like 93°
34
Humidity: 64%
UV Index: 1
Wind: 8 mph
7 PM
Cloudy Weather
84°
Feels Like 90°
34
Humidity: 68%
UV Index: 0
Wind: 7 mph
8 PM
Cloudy Night
82°
Feels Like 88°
34
Humidity: 74%
UV Index: 0
Wind: 6 mph
9 PM
Cloudy Night
79°
Feels Like 84°
34
Humidity: 81%
UV Index: 0
Wind: 6 mph
10 PM
Cloudy Night
77°
Feels Like 82°
40
Humidity: 88%
UV Index: 0
Wind: 6 mph
11 PM
Stormy Weather
75°
Feels Like 77°
51
Humidity: 94%
UV Index: 0
Wind: 6 mph

Hourly Air Quality Forecast - AQI (US EPA)

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

Pollutant Concentrations:

  • PM2.5: 9.53 µg/m³
  • PM10: 10.67 µg/m³
  • O3: 0.050 ppm
  • NO2: 3 ppb
  • SO2: 0.9 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

1 PM
58 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 8.14 µg/m³
  • PM10: 8.9 µg/m³
  • O3: 0.057 ppm
  • NO2: 1.8 ppb
  • SO2: 0.7 ppb
  • CO: 0.11 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

2 PM
57 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 6.54 µg/m³
  • PM10: 7.17 µg/m³
  • O3: 0.056 ppm
  • NO2: 1.7 ppb
  • SO2: 0.6 ppb
  • CO: 0.11 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

3 PM
54 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 5.18 µg/m³
  • PM10: 5.73 µg/m³
  • O3: 0.055 ppm
  • NO2: 1.9 ppb
  • SO2: 0.6 ppb
  • CO: 0.11 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

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

Pollutant Concentrations:

  • PM2.5: 4.09 µg/m³
  • PM10: 4.6 µg/m³
  • O3: 0.053 ppm
  • NO2: 2.3 ppb
  • SO2: 0.6 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.35 µg/m³
  • PM10: 3.83 µg/m³
  • O3: 0.050 ppm
  • NO2: 2.9 ppb
  • SO2: 0.6 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.17 µg/m³
  • PM10: 3.79 µg/m³
  • O3: 0.045 ppm
  • NO2: 5.4 ppb
  • SO2: 0.6 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.48 µg/m³
  • PM10: 4.49 µg/m³
  • O3: 0.037 ppm
  • NO2: 8.9 ppb
  • SO2: 0.6 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.87 µg/m³
  • PM10: 5.34 µg/m³
  • O3: 0.032 ppm
  • NO2: 11 ppb
  • SO2: 0.7 ppb
  • CO: 0.17 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: 4.28 µg/m³
  • PM10: 6.1 µg/m³
  • O3: 0.029 ppm
  • NO2: 11.5 ppb
  • SO2: 0.7 ppb
  • CO: 0.18 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.75 µg/m³
  • PM10: 6.7 µg/m³
  • O3: 0.027 ppm
  • NO2: 11 ppb
  • SO2: 0.7 ppb
  • CO: 0.18 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.17 µg/m³
  • PM10: 6.94 µg/m³
  • O3: 0.027 ppm
  • NO2: 9.7 ppb
  • SO2: 0.7 ppb
  • CO: 0.17 ppm

Health Recommendations:

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