Hourly Weather | Today Friday, December 26, 2025
Gaithersburg, Maryland
1 AM
Cloudy Night
34°
Feels Like 30°
0
Humidity: 62%
Wind: 6 mph
UV Index: 0
2 AM
Cloudy Night
30°
Feels Like 28°
0
Humidity: 69%
Wind: 6 mph
UV Index: 0
3 AM
Cloudy Night
30°
Feels Like 27°
0
Humidity: 65%
Wind: 6 mph
UV Index: 0
4 AM
Cloudy Night
28°
Feels Like 25°
0
Humidity: 66%
Wind: 6 mph
UV Index: 0
5 AM
Cloudy Night
27°
Feels Like 25°
0
Humidity: 66%
Wind: 6 mph
UV Index: 0
6 AM
Cloudy Night
27°
Feels Like 23°
0
Humidity: 67%
Wind: 6 mph
UV Index: 0
7 AM
Cloudy Weather
27°
Feels Like 25°
27
Humidity: 63%
Wind: 5 mph
UV Index: 0
8 AM
Cloudy Weather
28°
Feels Like 27°
27
Humidity: 57%
Wind: 5 mph
UV Index: 0
9 AM
Cloudy Weather
28°
Feels Like 28°
33
Humidity: 52%
Wind: 5 mph
UV Index: 1
10 AM
Cloudy Weather
30°
Feels Like 28°
49
Humidity: 49%
Wind: 6 mph
UV Index: 1
11 AM
Icy Road Conditions
30°
Feels Like 27°
68
Humidity: 48%
Wind: 6 mph
UV Index: 1
12 PM
Icy Road Conditions
32°
Feels Like 27°
68
Humidity: 49%
Wind: 7 mph
UV Index: 1
1 PM
Cloudy Weather
32°
Feels Like 28°
49
Humidity: 48%
Wind: 7 mph
UV Index: 1
2 PM
Cloudy Weather
32°
Feels Like 27°
47
Humidity: 49%
Wind: 8 mph
UV Index: 1
3 PM
Rainy Weather
32°
Feels Like 23°
51
Humidity: 51%
Wind: 9 mph
UV Index: 0
4 PM
Rainy Weather
32°
Feels Like 21°
51
Humidity: 54%
Wind: 10 mph
UV Index: 0
5 PM
Cloudy Weather
32°
Feels Like 23°
47
Humidity: 59%
Wind: 10 mph
UV Index: 0
6 PM
Cloudy Weather
32°
Feels Like 21°
45
Humidity: 65%
Wind: 10 mph
UV Index: 0
7 PM
Cloudy Weather
32°
Feels Like 21°
49
Humidity: 72%
Wind: 10 mph
UV Index: 0
8 PM
Rainy Weather
34°
Feels Like 21°
60
Humidity: 76%
Wind: 10 mph
UV Index: 0
9 PM
Rainy Weather
36°
Feels Like 25°
60
Humidity: 74%
Wind: 9 mph
UV Index: 0
10 PM
Rainy Weather
34°
Feels Like 25°
60
Humidity: 80%
Wind: 8 mph
UV Index: 0
11 PM
Cloudy Weather
34°
Feels Like 28°
49
Humidity: 82%
Wind: 7 mph
UV Index: 0

Hourly Air Quality Forecast - AQI (US EPA)

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

Pollutant Concentrations:

  • PM2.5: 7.77 µg/m³
  • PM10: 9.57 µg/m³
  • O3: 0.025 ppm
  • NO2: 6.6 ppb
  • SO2: 0.9 ppb
  • CO: 0.21 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: 7.75 µg/m³
  • PM10: 9.79 µg/m³
  • O3: 0.024 ppm
  • NO2: 6.6 ppb
  • SO2: 0.7 ppb
  • CO: 0.21 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: 7.76 µg/m³
  • PM10: 10.01 µg/m³
  • O3: 0.023 ppm
  • NO2: 6.6 ppb
  • SO2: 0.7 ppb
  • CO: 0.20 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 7.57 µg/m³
  • PM10: 9.97 µg/m³
  • O3: 0.022 ppm
  • NO2: 6.5 ppb
  • SO2: 0.6 ppb
  • CO: 0.20 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 7.09 µg/m³
  • PM10: 9.55 µg/m³
  • O3: 0.022 ppm
  • NO2: 6.1 ppb
  • SO2: 0.6 ppb
  • CO: 0.20 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 6.57 µg/m³
  • PM10: 9.11 µg/m³
  • O3: 0.022 ppm
  • NO2: 5.8 ppb
  • SO2: 0.7 ppb
  • CO: 0.19 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 6.38 µg/m³
  • PM10: 9.04 µg/m³
  • O3: 0.022 ppm
  • NO2: 5.8 ppb
  • SO2: 0.8 ppb
  • CO: 0.19 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.98 µg/m³
  • PM10: 8.81 µg/m³
  • O3: 0.022 ppm
  • NO2: 6.2 ppb
  • SO2: 0.9 ppb
  • CO: 0.19 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.48 µg/m³
  • PM10: 8.48 µg/m³
  • O3: 0.023 ppm
  • NO2: 6.7 ppb
  • SO2: 0.9 ppb
  • CO: 0.19 ppm

Health Recommendations:

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

10 AM
23 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 4.96 µg/m³
  • PM10: 8.07 µg/m³
  • O3: 0.025 ppm
  • NO2: 6.9 ppb
  • SO2: 1 ppb
  • CO: 0.18 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.26 µg/m³
  • PM10: 7.24 µg/m³
  • O3: 0.027 ppm
  • NO2: 6.6 ppb
  • SO2: 1.1 ppb
  • CO: 0.17 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.84 µg/m³
  • PM10: 6.67 µg/m³
  • O3: 0.028 ppm
  • NO2: 6.3 ppb
  • SO2: 1.1 ppb
  • CO: 0.17 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.56 µg/m³
  • PM10: 6.2 µg/m³
  • O3: 0.028 ppm
  • NO2: 6.3 ppb
  • SO2: 1.1 ppb
  • CO: 0.17 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.27 µg/m³
  • PM10: 5.67 µg/m³
  • O3: 0.029 ppm
  • NO2: 6.3 ppb
  • SO2: 1 ppb
  • CO: 0.17 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.09 µg/m³
  • PM10: 5.26 µg/m³
  • O3: 0.028 ppm
  • NO2: 6.4 ppb
  • SO2: 0.9 ppb
  • CO: 0.17 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.06 µg/m³
  • PM10: 5.12 µg/m³
  • O3: 0.027 ppm
  • NO2: 6.7 ppb
  • SO2: 0.9 ppb
  • CO: 0.17 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.16 µg/m³
  • PM10: 4.96 µg/m³
  • O3: 0.027 ppm
  • NO2: 7.1 ppb
  • SO2: 0.9 ppb
  • CO: 0.17 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.2 µg/m³
  • PM10: 4.59 µg/m³
  • O3: 0.026 ppm
  • NO2: 7.1 ppb
  • SO2: 0.9 ppb
  • CO: 0.17 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.3 µg/m³
  • PM10: 4.37 µg/m³
  • O3: 0.026 ppm
  • NO2: 6.4 ppb
  • SO2: 0.8 ppb
  • CO: 0.17 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.37 µg/m³
  • PM10: 4.29 µg/m³
  • O3: 0.026 ppm
  • NO2: 5.3 ppb
  • SO2: 0.6 ppb
  • CO: 0.17 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.46 µg/m³
  • PM10: 4.39 µg/m³
  • O3: 0.027 ppm
  • NO2: 4.4 ppb
  • SO2: 0.7 ppb
  • CO: 0.16 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: 3.83 µg/m³
  • PM10: 4.88 µg/m³
  • O3: 0.026 ppm
  • NO2: 4.2 ppb
  • SO2: 0.8 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.8 µg/m³
  • PM10: 5.98 µg/m³
  • O3: 0.025 ppm
  • NO2: 4.6 ppb
  • SO2: 1 ppb
  • CO: 0.17 ppm

Health Recommendations:

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