Hourly Weather | Today Thursday, February 5, 2026
Frederick, Maryland
10 PM
Cloudy Night
19°
Feels Like 21°
0
Humidity: 73%
UV Index: 0
Wind: 2 mph
11 PM
Cloudy Night
18°
Feels Like 19°
0
Frost Risk: 100%
Humidity: 77%
UV Index: 0
Wind: 2 mph

Hourly Air Quality Forecast - AQI (US EPA)

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

Pollutant Concentrations:

  • PM2.5: 11.23 µg/m³
  • PM10: 15.62 µg/m³
  • O3: 0.023 ppm
  • NO2: 9.4 ppb
  • SO2: 0.6 ppb
  • CO: 0.25 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 11.71 µg/m³
  • PM10: 16.49 µg/m³
  • O3: 0.021 ppm
  • NO2: 9.6 ppb
  • SO2: 0.5 ppb
  • CO: 0.25 ppm

Health Recommendations:

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