Hourly Weather | Today › Monday, November 2, 2026
Frederick, Maryland
1 AM
Cloudy Night
45°
Feels Like 46°
0
Humidity: 95%
UV Index: 0
Wind: 4 mph
2 AM
Cloudy Night
45°
Feels Like 45°
0
Humidity: 96%
UV Index: 0
Wind: 4 mph
3 AM
Cloudy Night
45°
Feels Like 45°
0
Humidity: 95%
UV Index: 0
Wind: 4 mph
4 AM
Cloudy Night
45°
Feels Like 45°
0
Humidity: 95%
UV Index: 0
Wind: 4 mph
5 AM
Cloudy Night
45°
Feels Like 45°
0
Humidity: 97%
UV Index: 0
Wind: 4 mph
6 AM
Cloudy Night
45°
Feels Like 45°
0
Humidity: 98%
UV Index: 0
Wind: 4 mph
7 AM
Cloudy Weather
43°
Feels Like 43°
0
Humidity: 100%
UV Index: 0
Wind: 4 mph
8 AM
Cloudy Weather
46°
Feels Like 48°
0
Humidity: 95%
UV Index: 1
Wind: 5 mph
9 AM
Cloudy Weather
52°
Feels Like 54°
0
Humidity: 81%
UV Index: 2
Wind: 6 mph
10 AM
Cloudy Weather
57°
Feels Like 61°
0
Humidity: 68%
UV Index: 2
Wind: 7 mph
11 AM
Cloudy Weather
63°
Feels Like 64°
0
Humidity: 62%
UV Index: 3
Wind: 7 mph
12 PM
Cloudy Weather
64°
Feels Like 66°
0
Humidity: 58%
UV Index: 3
Wind: 8 mph
1 PM
Cloudy Weather
68°
Feels Like 70°
0
Humidity: 55%
UV Index: 3
Wind: 8 mph
2 PM
Cloudy Weather
70°
Feels Like 70°
0
Humidity: 52%
UV Index: 2
Wind: 8 mph
3 PM
Cloudy Weather
72°
Feels Like 72°
0
Humidity: 51%
UV Index: 2
Wind: 8 mph
4 PM
Cloudy Weather
70°
Feels Like 68°
0
Humidity: 56%
UV Index: 1
Wind: 7 mph
5 PM
Cloudy Weather
64°
Feels Like 63°
0
Humidity: 65%
UV Index: 0
Wind: 7 mph
6 PM
Cloudy Night
63°
Feels Like 61°
0
Humidity: 72%
UV Index: 0
Wind: 6 mph
7 PM
Cloudy Night
59°
Feels Like 57°
1
Humidity: 79%
UV Index: 0
Wind: 6 mph
8 PM
Cloudy Night
55°
Feels Like 55°
1
Humidity: 87%
UV Index: 0
Wind: 6 mph
9 PM
Cloudy Night
54°
Feels Like 52°
1
Humidity: 95%
UV Index: 0
Wind: 6 mph
10 PM
Cloudy Night
54°
Feels Like 52°
1
Humidity: 96%
UV Index: 0
Wind: 6 mph
11 PM
Cloudy Night
52°
Feels Like 50°
1
Humidity: 99%
UV Index: 0
Wind: 6 mph

Hourly Air Quality Forecast - AQI (US EPA)

1 AM
31 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 7.51 µg/m³
  • PM10: 9.42 µg/m³
  • O3: 0.017 ppm
  • NO2: 5.1 ppb
  • SO2: 0 ppb
  • CO: 0.18 ppm

Health Recommendations:

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

2 AM
32 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 7.58 µg/m³
  • PM10: 9.54 µg/m³
  • O3: 0.015 ppm
  • NO2: 5 ppb
  • SO2: 0 ppb
  • CO: 0.18 ppm

Health Recommendations:

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

3 AM
32 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 7.73 µg/m³
  • PM10: 9.73 µg/m³
  • O3: 0.014 ppm
  • NO2: 4.7 ppb
  • SO2: 0 ppb
  • CO: 0.18 ppm

Health Recommendations:

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

4 AM
33 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 7.92 µg/m³
  • PM10: 9.93 µg/m³
  • O3: 0.013 ppm
  • NO2: 4.5 ppb
  • SO2: 0 ppb
  • CO: 0.17 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 8.12 µg/m³
  • PM10: 10.09 µg/m³
  • O3: 0.013 ppm
  • NO2: 4.2 ppb
  • SO2: 0 ppb
  • CO: 0.17 ppm

Health Recommendations:

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

6 AM
34 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 8.28 µg/m³
  • PM10: 10.2 µg/m³
  • O3: 0.014 ppm
  • NO2: 4 ppb
  • SO2: 0 ppb
  • CO: 0.17 ppm

Health Recommendations:

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

7 AM
35 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 8.46 µg/m³
  • PM10: 10.42 µg/m³
  • O3: 0.014 ppm
  • NO2: 4.3 ppb
  • SO2: 0 ppb
  • CO: 0.18 ppm

Health Recommendations:

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

8 AM
35 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 8.41 µg/m³
  • PM10: 10.41 µg/m³
  • O3: 0.016 ppm
  • NO2: 4.7 ppb
  • SO2: 0.1 ppb
  • CO: 0.18 ppm

Health Recommendations:

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

9 AM
34 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 8.28 µg/m³
  • PM10: 10.26 µg/m³
  • O3: 0.017 ppm
  • NO2: 4.4 ppb
  • SO2: 0.1 ppb
  • CO: 0.19 ppm

Health Recommendations:

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

10 AM
35 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 8.3 µg/m³
  • PM10: 10.17 µg/m³
  • O3: 0.021 ppm
  • NO2: 3.5 ppb
  • SO2: 0.1 ppb
  • CO: 0.18 ppm

Health Recommendations:

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

11 AM
37 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 8.82 µg/m³
  • PM10: 10.31 µg/m³
  • O3: 0.037 ppm
  • NO2: 1.9 ppb
  • SO2: 0.3 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 9.34 µg/m³
  • PM10: 10.7 µg/m³
  • O3: 0.042 ppm
  • NO2: 1.4 ppb
  • SO2: 0.3 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 9.61 µg/m³
  • PM10: 10.91 µg/m³
  • O3: 0.044 ppm
  • NO2: 1.3 ppb
  • SO2: 0.3 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 9.25 µg/m³
  • PM10: 10.37 µg/m³
  • O3: 0.048 ppm
  • NO2: 1.1 ppb
  • SO2: 0.2 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 8.96 µg/m³
  • PM10: 10.03 µg/m³
  • O3: 0.049 ppm
  • NO2: 1.1 ppb
  • SO2: 0.2 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 8.7 µg/m³
  • PM10: 9.81 µg/m³
  • O3: 0.049 ppm
  • NO2: 1.4 ppb
  • SO2: 0.2 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 8.63 µg/m³
  • PM10: 9.89 µg/m³
  • O3: 0.043 ppm
  • NO2: 2.5 ppb
  • SO2: 0.2 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 8.9 µg/m³
  • PM10: 10.4 µg/m³
  • O3: 0.036 ppm
  • NO2: 4 ppb
  • SO2: 0.1 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 9.22 µg/m³
  • PM10: 10.99 µg/m³
  • O3: 0.030 ppm
  • NO2: 5.2 ppb
  • SO2: 0.1 ppb
  • CO: 0.18 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 9.35 µg/m³
  • PM10: 11.35 µg/m³
  • O3: 0.026 ppm
  • NO2: 6 ppb
  • SO2: 0.1 ppb
  • CO: 0.19 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 9.45 µg/m³
  • PM10: 11.6 µg/m³
  • O3: 0.024 ppm
  • NO2: 6.1 ppb
  • SO2: 0.1 ppb
  • CO: 0.19 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 9.38 µg/m³
  • PM10: 11.58 µg/m³
  • O3: 0.024 ppm
  • NO2: 5.8 ppb
  • SO2: 0.1 ppb
  • CO: 0.19 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 9.08 µg/m³
  • PM10: 11.2 µg/m³
  • O3: 0.024 ppm
  • NO2: 5.3 ppb
  • SO2: 0.1 ppb
  • CO: 0.19 ppm

Health Recommendations:

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