Hourly Weather | Today Sunday, October 26, 2025
Frederick, Maryland
1 PM
Cloudy Weather
55°
Feels Like 63°
0
Humidity: 51%
Wind: 5 mph
UV Index: 3
2 PM
Cloudy Weather
59°
Feels Like 66°
0
Humidity: 47%
Wind: 5 mph
UV Index: 3
3 PM
Cloudy Weather
63°
Feels Like 66°
0
Humidity: 43%
Wind: 5 mph
UV Index: 3
4 PM
Cloudy Weather
61°
Feels Like 64°
0
Humidity: 46%
Wind: 5 mph
UV Index: 2
5 PM
Cloudy Weather
57°
Feels Like 59°
0
Humidity: 51%
Wind: 5 mph
UV Index: 1
6 PM
Cloudy Weather
55°
Feels Like 55°
0
Humidity: 56%
Wind: 5 mph
UV Index: 0
7 PM
Cloudy Night
54°
Feels Like 54°
0
Humidity: 62%
Wind: 5 mph
UV Index: 0
8 PM
Cloudy Night
52°
Feels Like 52°
0
Humidity: 66%
Wind: 5 mph
UV Index: 0
9 PM
Cloudy Night
50°
Feels Like 50°
0
Humidity: 72%
Wind: 5 mph
UV Index: 0
10 PM
Cloudy Night
46°
Feels Like 46°
0
Humidity: 79%
Wind: 5 mph
UV Index: 0
11 PM
Cloudy Night
45°
Feels Like 45°
0
Humidity: 84%
Wind: 5 mph
UV Index: 0

Hourly Air Quality Forecast - AQI (US EPA)

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

Pollutant Concentrations:

  • PM2.5: 6.28 µg/m³
  • PM10: 7.61 µg/m³
  • O3: 0.035 ppm
  • NO2: 1.7 ppb
  • SO2: 0.5 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 6.53 µg/m³
  • PM10: 7.84 µg/m³
  • O3: 0.038 ppm
  • NO2: 1.5 ppb
  • SO2: 0.5 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 6.68 µg/m³
  • PM10: 7.73 µg/m³
  • O3: 0.042 ppm
  • NO2: 1 ppb
  • SO2: 0.4 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 6.79 µg/m³
  • PM10: 7.75 µg/m³
  • O3: 0.044 ppm
  • NO2: 0.8 ppb
  • SO2: 0.4 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 6.94 µg/m³
  • PM10: 7.94 µg/m³
  • O3: 0.044 ppm
  • NO2: 0.9 ppb
  • SO2: 0.4 ppb
  • CO: 0.11 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: 7.12 µg/m³
  • PM10: 8.3 µg/m³
  • O3: 0.039 ppm
  • NO2: 1.8 ppb
  • SO2: 0.3 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

7 PM
31 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 7.34 µg/m³
  • PM10: 8.81 µg/m³
  • O3: 0.031 ppm
  • NO2: 3.3 ppb
  • SO2: 0.2 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

8 PM
32 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 7.64 µg/m³
  • PM10: 9.4 µg/m³
  • O3: 0.026 ppm
  • NO2: 4.4 ppb
  • SO2: 0.2 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

9 PM
32 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 7.79 µg/m³
  • PM10: 9.8 µg/m³
  • O3: 0.021 ppm
  • NO2: 5.3 ppb
  • SO2: 0.1 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

10 PM
34 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 8.04 µg/m³
  • PM10: 10.3 µg/m³
  • O3: 0.018 ppm
  • NO2: 5.9 ppb
  • SO2: 0.1 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

11 PM
35 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 8.33 µg/m³
  • PM10: 10.84 µg/m³
  • O3: 0.016 ppm
  • NO2: 6.3 ppb
  • SO2: 0.1 ppb
  • CO: 0.16 ppm

Health Recommendations:

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