Hourly Weather | Today Wednesday, April 29, 2026
Rockville, Maryland
4 AM
Cloudy Night
52°
Feels Like 50°
0
Humidity: 84%
UV Index: 0
Wind: 6 mph
5 AM
Cloudy Night
52°
Feels Like 48°
1
Humidity: 87%
UV Index: 0
Wind: 6 mph
6 AM
Cloudy Night
48°
Feels Like 46°
1
Humidity: 92%
UV Index: 0
Wind: 6 mph
7 AM
Cloudy Weather
52°
Feels Like 52°
3
Humidity: 87%
UV Index: 1
Wind: 6 mph
8 AM
Cloudy Weather
54°
Feels Like 52°
7
Humidity: 84%
UV Index: 0
Wind: 6 mph
9 AM
Cloudy Weather
55°
Feels Like 54°
7
Humidity: 81%
UV Index: 1
Wind: 7 mph
10 AM
Cloudy Weather
57°
Feels Like 57°
7
Humidity: 78%
UV Index: 1
Wind: 7 mph
11 AM
Cloudy Weather
61°
Feels Like 61°
7
Humidity: 76%
UV Index: 1
Wind: 7 mph
12 PM
Cloudy Weather
61°
Feels Like 61°
7
Humidity: 76%
UV Index: 2
Wind: 8 mph
1 PM
Cloudy Weather
63°
Feels Like 63°
11
Humidity: 78%
UV Index: 2
Wind: 8 mph
2 PM
Rainy Weather
63°
Feels Like 59°
62
Humidity: 80%
UV Index: 2
Wind: 8 mph
3 PM
Cloudy Weather
63°
Feels Like 63°
49
Humidity: 79%
UV Index: 1
Wind: 8 mph
4 PM
Rainy Weather
63°
Feels Like 57°
62
Humidity: 85%
UV Index: 1
Wind: 8 mph
5 PM
Rainy Weather
63°
Feels Like 57°
62
Humidity: 85%
UV Index: 1
Wind: 8 mph
6 PM
Cloudy Weather
61°
Feels Like 59°
49
Humidity: 88%
UV Index: 0
Wind: 8 mph
7 PM
Rainy Weather
61°
Feels Like 55°
62
Humidity: 89%
UV Index: 0
Wind: 8 mph
8 PM
Stormy Weather
61°
Feels Like 54°
56
Humidity: 91%
UV Index: 0
Wind: 8 mph
9 PM
Cloudy Weather
59°
Feels Like 55°
49
Humidity: 94%
UV Index: 0
Wind: 8 mph
10 PM
Cloudy Weather
59°
Feels Like 57°
47
Humidity: 95%
UV Index: 0
Wind: 7 mph
11 PM
Cloudy Weather
57°
Feels Like 55°
46
Humidity: 96%
UV Index: 0
Wind: 7 mph

Hourly Air Quality Forecast - AQI (US EPA)

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

Pollutant Concentrations:

  • PM2.5: 3.22 µg/m³
  • PM10: 4.71 µg/m³
  • O3: 0.025 ppm
  • NO2: 2 ppb
  • SO2: 0.2 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.15 µg/m³
  • PM10: 4.69 µg/m³
  • O3: 0.025 ppm
  • NO2: 1.8 ppb
  • SO2: 0.2 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.09 µg/m³
  • PM10: 4.7 µg/m³
  • O3: 0.025 ppm
  • NO2: 1.8 ppb
  • SO2: 0.2 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.1 µg/m³
  • PM10: 4.85 µg/m³
  • O3: 0.025 ppm
  • NO2: 2.1 ppb
  • SO2: 0.2 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.24 µg/m³
  • PM10: 5.22 µg/m³
  • O3: 0.025 ppm
  • NO2: 2.6 ppb
  • SO2: 0.2 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

9 AM
24 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 3.49 µg/m³
  • PM10: 5.47 µg/m³
  • O3: 0.025 ppm
  • NO2: 2.9 ppb
  • SO2: 0.3 ppb
  • CO: 0.13 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: 3.68 µg/m³
  • PM10: 5.32 µg/m³
  • O3: 0.025 ppm
  • NO2: 2.9 ppb
  • SO2: 0.4 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.88 µg/m³
  • PM10: 5.27 µg/m³
  • O3: 0.024 ppm
  • NO2: 2.7 ppb
  • SO2: 0.4 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.24 µg/m³
  • PM10: 5.38 µg/m³
  • O3: 0.026 ppm
  • NO2: 2.4 ppb
  • SO2: 0.4 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.46 µg/m³
  • PM10: 5.26 µg/m³
  • O3: 0.027 ppm
  • NO2: 2 ppb
  • SO2: 0.3 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.54 µg/m³
  • PM10: 5.08 µg/m³
  • O3: 0.026 ppm
  • NO2: 1.7 ppb
  • SO2: 0.3 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.47 µg/m³
  • PM10: 4.83 µg/m³
  • O3: 0.025 ppm
  • NO2: 1.6 ppb
  • SO2: 0.2 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.1 µg/m³
  • PM10: 4.36 µg/m³
  • O3: 0.024 ppm
  • NO2: 1.5 ppb
  • SO2: 0.2 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.52 µg/m³
  • PM10: 3.74 µg/m³
  • O3: 0.022 ppm
  • NO2: 1.5 ppb
  • SO2: 0.2 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.09 µg/m³
  • PM10: 3.33 µg/m³
  • O3: 0.019 ppm
  • NO2: 1.8 ppb
  • SO2: 0.1 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.89 µg/m³
  • PM10: 3.25 µg/m³
  • O3: 0.014 ppm
  • NO2: 2.1 ppb
  • SO2: 0.1 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.81 µg/m³
  • PM10: 3.32 µg/m³
  • O3: 0.012 ppm
  • NO2: 2.5 ppb
  • SO2: 0.1 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.87 µg/m³
  • PM10: 3.5 µg/m³
  • O3: 0.011 ppm
  • NO2: 2.6 ppb
  • SO2: 0.1 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.97 µg/m³
  • PM10: 3.63 µg/m³
  • O3: 0.011 ppm
  • NO2: 2.3 ppb
  • SO2: 0.1 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.76 µg/m³
  • PM10: 3.39 µg/m³
  • O3: 0.013 ppm
  • NO2: 2.1 ppb
  • SO2: 0.1 ppb
  • CO: 0.14 ppm

Health Recommendations:

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