Hourly Weather | Today › Monday, November 2, 2026
Gaithersburg, Maryland
1 AM
Cloudy Night
46°
Feels Like 46°
0
Humidity: 81%
UV Index: 0
Wind: 4 mph
2 AM
Cloudy Night
46°
Feels Like 46°
0
Humidity: 84%
UV Index: 0
Wind: 2 mph
3 AM
Cloudy Night
45°
Feels Like 46°
0
Humidity: 87%
UV Index: 0
Wind: 2 mph
4 AM
Cloudy Night
45°
Feels Like 46°
0
Humidity: 89%
UV Index: 0
Wind: 2 mph
5 AM
Cloudy Night
45°
Feels Like 46°
0
Humidity: 92%
UV Index: 0
Wind: 2 mph
6 AM
Cloudy Night
45°
Feels Like 46°
0
Humidity: 91%
UV Index: 0
Wind: 2 mph
7 AM
Cloudy Weather
46°
Feels Like 46°
0
Humidity: 86%
UV Index: 0
Wind: 4 mph
8 AM
Cloudy Weather
48°
Feels Like 48°
0
Humidity: 84%
UV Index: 1
Wind: 5 mph
9 AM
Cloudy Weather
52°
Feels Like 54°
0
Humidity: 74%
UV Index: 1
Wind: 5 mph
10 AM
Cloudy Weather
55°
Feels Like 57°
0
Humidity: 67%
UV Index: 2
Wind: 5 mph
11 AM
Cloudy Weather
57°
Feels Like 63°
0
Humidity: 59%
UV Index: 2
Wind: 6 mph
12 PM
Cloudy Weather
61°
Feels Like 64°
0
Humidity: 52%
UV Index: 3
Wind: 6 mph
1 PM
Cloudy Weather
63°
Feels Like 66°
1
Humidity: 47%
UV Index: 3
Wind: 6 mph
2 PM
Cloudy Weather
64°
Feels Like 66°
1
Humidity: 46%
UV Index: 2
Wind: 6 mph
3 PM
Cloudy Weather
64°
Feels Like 66°
1
Humidity: 45%
UV Index: 2
Wind: 6 mph
4 PM
Cloudy Weather
63°
Feels Like 64°
1
Humidity: 49%
UV Index: 1
Wind: 6 mph
5 PM
Cloudy Weather
61°
Feels Like 59°
1
Humidity: 56%
UV Index: 0
Wind: 5 mph
6 PM
Cloudy Night
55°
Feels Like 55°
1
Humidity: 66%
UV Index: 0
Wind: 5 mph
7 PM
Cloudy Weather
54°
Feels Like 52°
0
Humidity: 76%
UV Index: 0
Wind: 5 mph
8 PM
Cloudy Night
52°
Feels Like 50°
0
Humidity: 82%
UV Index: 0
Wind: 5 mph
9 PM
Cloudy Night
48°
Feels Like 48°
0
Humidity: 88%
UV Index: 0
Wind: 5 mph
10 PM
Cloudy Night
46°
Feels Like 46°
0
Humidity: 93%
UV Index: 0
Wind: 5 mph
11 PM
Cloudy Night
46°
Feels Like 46°
0
Humidity: 94%
UV Index: 0
Wind: 5 mph

Hourly Air Quality Forecast - AQI (US EPA)

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

Pollutant Concentrations:

  • PM2.5: 6.17 µg/m³
  • PM10: 7.93 µg/m³
  • O3: 0.015 ppm
  • NO2: 6.1 ppb
  • SO2: 0 ppb
  • CO: 0.19 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 6.15 µg/m³
  • PM10: 7.96 µg/m³
  • O3: 0.013 ppm
  • NO2: 5.7 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
26 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 6.19 µg/m³
  • PM10: 8.06 µg/m³
  • O3: 0.012 ppm
  • NO2: 5.3 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
26 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 6.29 µg/m³
  • PM10: 8.23 µg/m³
  • O3: 0.011 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.

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

Pollutant Concentrations:

  • PM2.5: 6.41 µg/m³
  • PM10: 8.4 µg/m³
  • O3: 0.010 ppm
  • NO2: 4.9 ppb
  • SO2: 0 ppb
  • CO: 0.18 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: 6.54 µg/m³
  • PM10: 8.56 µg/m³
  • O3: 0.009 ppm
  • NO2: 4.8 ppb
  • SO2: 0 ppb
  • CO: 0.18 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 6.71 µg/m³
  • PM10: 8.83 µg/m³
  • O3: 0.008 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.

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

Pollutant Concentrations:

  • PM2.5: 6.7 µg/m³
  • PM10: 8.92 µg/m³
  • O3: 0.008 ppm
  • NO2: 5.4 ppb
  • SO2: 0 ppb
  • CO: 0.19 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 6.57 µg/m³
  • PM10: 8.84 µg/m³
  • O3: 0.010 ppm
  • NO2: 4.6 ppb
  • SO2: 0 ppb
  • CO: 0.19 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 6.58 µg/m³
  • PM10: 8.86 µg/m³
  • O3: 0.013 ppm
  • NO2: 3.9 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 AM
34 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 8.05 µg/m³
  • PM10: 9.87 µg/m³
  • O3: 0.037 ppm
  • NO2: 2.4 ppb
  • SO2: 0.4 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 8.77 µg/m³
  • PM10: 10.48 µg/m³
  • O3: 0.041 ppm
  • NO2: 1.9 ppb
  • SO2: 0.4 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 8.98 µg/m³
  • PM10: 10.72 µg/m³
  • O3: 0.043 ppm
  • NO2: 1.9 ppb
  • SO2: 0.4 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 8.81 µg/m³
  • PM10: 10.53 µg/m³
  • O3: 0.046 ppm
  • NO2: 1.8 ppb
  • SO2: 0.4 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 8.66 µg/m³
  • PM10: 10.47 µg/m³
  • O3: 0.046 ppm
  • NO2: 1.9 ppb
  • SO2: 0.4 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 8.53 µg/m³
  • PM10: 10.53 µg/m³
  • O3: 0.045 ppm
  • NO2: 2.4 ppb
  • SO2: 0.4 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 8.63 µg/m³
  • PM10: 10.9 µg/m³
  • O3: 0.038 ppm
  • NO2: 4 ppb
  • SO2: 0.4 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 9.02 µg/m³
  • PM10: 11.58 µg/m³
  • O3: 0.030 ppm
  • NO2: 5.9 ppb
  • SO2: 0.3 ppb
  • CO: 0.18 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 9.48 µg/m³
  • PM10: 12.34 µg/m³
  • O3: 0.024 ppm
  • NO2: 7.4 ppb
  • SO2: 0.2 ppb
  • CO: 0.19 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 9.82 µg/m³
  • PM10: 12.97 µg/m³
  • O3: 0.020 ppm
  • NO2: 8.6 ppb
  • SO2: 0.1 ppb
  • CO: 0.21 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 10.14 µg/m³
  • PM10: 13.5 µg/m³
  • O3: 0.017 ppm
  • NO2: 9.1 ppb
  • SO2: 0.1 ppb
  • CO: 0.22 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 10.3 µg/m³
  • PM10: 13.7 µg/m³
  • O3: 0.016 ppm
  • NO2: 8.8 ppb
  • SO2: 0.1 ppb
  • CO: 0.22 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 10.21 µg/m³
  • PM10: 13.5 µg/m³
  • O3: 0.014 ppm
  • NO2: 8.2 ppb
  • SO2: 0.1 ppb
  • CO: 0.22 ppm

Health Recommendations:

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