Hourly Weather | Today Friday, February 6, 2026
Frederick, Maryland
1 AM
Cloudy Night
18°
Feels Like 18°
0
Frost Risk: 100%
Humidity: 86%
UV Index: 0
Wind: 4 mph
2 AM
Cloudy Night
16°
Feels Like 18°
0
Frost Risk: 100%
Humidity: 86%
UV Index: 0
Wind: 4 mph
3 AM
Cloudy Night
16°
Feels Like 18°
0
Frost Risk: 100%
Humidity: 91%
UV Index: 0
Wind: 2 mph
4 AM
Cloudy Night
14°
Feels Like 18°
0
Frost Risk: 100%
Humidity: 94%
UV Index: 0
Wind: 2 mph
5 AM
Cloudy Night
12°
Feels Like 16°
0
Frost Risk: 100%
Humidity: 95%
UV Index: 0
Wind: 2 mph
6 AM
Cloudy Night
12°
Feels Like 14°
0
Frost Risk: 100%
Humidity: 96%
UV Index: 0
Wind: 4 mph
7 AM
Cloudy Weather
10°
Feels Like 12°
5
Frost Risk: 100%
Humidity: 99%
UV Index: 0
Wind: 4 mph
8 AM
Cloudy Weather
12°
Feels Like 16°
5
Frost Risk: 100%
Humidity: 94%
UV Index: 0
Wind: 4 mph
9 AM
Cloudy Weather
16°
Feels Like 18°
6
Frost Risk: 100%
Humidity: 91%
UV Index: 1
Wind: 5 mph
10 AM
Cloudy Weather
19°
Feels Like 19°
7
Humidity: 86%
UV Index: 1
Wind: 5 mph
11 AM
Cloudy Weather
23°
Feels Like 21°
7
Humidity: 79%
UV Index: 1
Wind: 6 mph
12 PM
Cloudy Weather
25°
Feels Like 25°
11
Humidity: 74%
UV Index: 1
Wind: 6 mph
1 PM
Cloudy Weather
28°
Feels Like 25°
27
Humidity: 69%
UV Index: 1
Wind: 6 mph
2 PM
Cloudy Weather
28°
Feels Like 27°
27
Humidity: 69%
UV Index: 1
Wind: 7 mph
3 PM
Cloudy Weather
30°
Feels Like 27°
33
Humidity: 69%
UV Index: 0
Wind: 7 mph
4 PM
Snowy Weather
30°
Feels Like 25°
64
Humidity: 73%
UV Index: 0
Wind: 7 mph
5 PM
Snowy Weather
30°
Feels Like 25°
65
Humidity: 76%
UV Index: 0
Wind: 6 mph
6 PM
Cloudy Weather
28°
Feels Like 27°
49
Humidity: 79%
UV Index: 0
Wind: 5 mph
7 PM
Snowy Weather
28°
Feels Like 27°
55
Humidity: 83%
UV Index: 0
Wind: 5 mph
8 PM
Snowy Weather
28°
Feels Like 27°
55
Humidity: 84%
UV Index: 0
Wind: 5 mph
9 PM
Snowy Weather
28°
Feels Like 27°
55
Humidity: 81%
UV Index: 0
Wind: 5 mph
10 PM
Cloudy Weather
30°
Feels Like 28°
40
Humidity: 79%
UV Index: 0
Wind: 5 mph
11 PM
Cloudy Night
28°
Feels Like 28°
34
Humidity: 80%
UV Index: 0
Wind: 5 mph

Hourly Air Quality Forecast - AQI (US EPA)

1 AM
51 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 12.46 µg/m³
  • PM10: 17.77 µg/m³
  • O3: 0.020 ppm
  • NO2: 9.4 ppb
  • SO2: 0.5 ppb
  • CO: 0.25 ppm

Health Recommendations:

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

2 AM
52 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 12.85 µg/m³
  • PM10: 18.56 µg/m³
  • O3: 0.019 ppm
  • NO2: 9.1 ppb
  • SO2: 0.6 ppb
  • CO: 0.25 ppm

Health Recommendations:

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

3 AM
53 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 13.41 µg/m³
  • PM10: 19.45 µg/m³
  • O3: 0.019 ppm
  • NO2: 8.9 ppb
  • SO2: 0.6 ppb
  • CO: 0.25 ppm

Health Recommendations:

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

4 AM
54 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 14.09 µg/m³
  • PM10: 20.23 µg/m³
  • O3: 0.019 ppm
  • NO2: 8.8 ppb
  • SO2: 0.7 ppb
  • CO: 0.25 ppm

Health Recommendations:

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

5 AM
56 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 14.81 µg/m³
  • PM10: 20.93 µg/m³
  • O3: 0.018 ppm
  • NO2: 8.7 ppb
  • SO2: 0.7 ppb
  • CO: 0.25 ppm

Health Recommendations:

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

6 AM
58 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 15.51 µg/m³
  • PM10: 21.69 µg/m³
  • O3: 0.018 ppm
  • NO2: 8.8 ppb
  • SO2: 0.6 ppb
  • CO: 0.25 ppm

Health Recommendations:

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

7 AM
59 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 16.35 µg/m³
  • PM10: 22.71 µg/m³
  • O3: 0.017 ppm
  • NO2: 9.5 ppb
  • SO2: 0.6 ppb
  • CO: 0.26 ppm

Health Recommendations:

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

8 AM
61 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 17.01 µg/m³
  • PM10: 23.23 µg/m³
  • O3: 0.015 ppm
  • NO2: 11 ppb
  • SO2: 0.5 ppb
  • CO: 0.28 ppm

Health Recommendations:

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

9 AM
61 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 17.34 µg/m³
  • PM10: 23.11 µg/m³
  • O3: 0.015 ppm
  • NO2: 11.2 ppb
  • SO2: 0.4 ppb
  • CO: 0.29 ppm

Health Recommendations:

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

10 AM
62 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 17.46 µg/m³
  • PM10: 22.62 µg/m³
  • O3: 0.017 ppm
  • NO2: 9.9 ppb
  • SO2: 0.4 ppb
  • CO: 0.30 ppm

Health Recommendations:

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

11 AM
56 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 14.82 µg/m³
  • PM10: 17.31 µg/m³
  • O3: 0.026 ppm
  • NO2: 6.3 ppb
  • SO2: 0.7 ppb
  • CO: 0.24 ppm

Health Recommendations:

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

12 PM
54 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 13.84 µg/m³
  • PM10: 15.66 µg/m³
  • O3: 0.030 ppm
  • NO2: 4.9 ppb
  • SO2: 0.8 ppb
  • CO: 0.22 ppm

Health Recommendations:

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

1 PM
53 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 13.55 µg/m³
  • PM10: 15.08 µg/m³
  • O3: 0.031 ppm
  • NO2: 4.4 ppb
  • SO2: 0.8 ppb
  • CO: 0.21 ppm

Health Recommendations:

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

2 PM
52 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 13.16 µg/m³
  • PM10: 14.4 µg/m³
  • O3: 0.032 ppm
  • NO2: 4.4 ppb
  • SO2: 0.8 ppb
  • CO: 0.21 ppm

Health Recommendations:

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

3 PM
51 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 12.7 µg/m³
  • PM10: 13.71 µg/m³
  • O3: 0.032 ppm
  • NO2: 4.9 ppb
  • SO2: 0.8 ppb
  • CO: 0.21 ppm

Health Recommendations:

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

4 PM
51 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 12.24 µg/m³
  • PM10: 13.13 µg/m³
  • O3: 0.031 ppm
  • NO2: 5.7 ppb
  • SO2: 0.8 ppb
  • CO: 0.21 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 12.23 µg/m³
  • PM10: 13.41 µg/m³
  • O3: 0.028 ppm
  • NO2: 7.4 ppb
  • SO2: 0.7 ppb
  • CO: 0.22 ppm

Health Recommendations:

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

6 PM
51 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 12.5 µg/m³
  • PM10: 14.27 µg/m³
  • O3: 0.024 ppm
  • NO2: 9.2 ppb
  • SO2: 0.6 ppb
  • CO: 0.24 ppm

Health Recommendations:

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

7 PM
52 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 12.85 µg/m³
  • PM10: 15.22 µg/m³
  • O3: 0.022 ppm
  • NO2: 10 ppb
  • SO2: 0.5 ppb
  • CO: 0.25 ppm

Health Recommendations:

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

8 PM
53 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 13.27 µg/m³
  • PM10: 16.14 µg/m³
  • O3: 0.020 ppm
  • NO2: 10.4 ppb
  • SO2: 0.4 ppb
  • CO: 0.26 ppm

Health Recommendations:

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

9 PM
53 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 13.55 µg/m³
  • PM10: 16.7 µg/m³
  • O3: 0.019 ppm
  • NO2: 10.4 ppb
  • SO2: 0.3 ppb
  • CO: 0.27 ppm

Health Recommendations:

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

10 PM
53 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 13.6 µg/m³
  • PM10: 16.88 µg/m³
  • O3: 0.018 ppm
  • NO2: 10.2 ppb
  • SO2: 0.3 ppb
  • CO: 0.27 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 11.94 µg/m³
  • PM10: 14.39 µg/m³
  • O3: 0.021 ppm
  • NO2: 8.9 ppb
  • SO2: 0.4 ppb
  • CO: 0.25 ppm

Health Recommendations:

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