Hourly Weather | Today Sunday, May 17, 2026
Washington, District of Columbia
9 AM
Cloudy Weather
72°
Feels Like 73°
0
Humidity: 72%
UV Index: 2
Wind: 6 mph
10 AM
Cloudy Weather
75°
Feels Like 79°
0
Humidity: 65%
UV Index: 4
Wind: 6 mph
11 AM
Cloudy Weather
79°
Feels Like 84°
0
Humidity: 59%
UV Index: 6
Wind: 6 mph
12 PM
Cloudy Weather
81°
Feels Like 90°
0
Humidity: 53%
UV Index: 9
Wind: 7 mph
1 PM
Cloudy Weather
84°
Feels Like 91°
0
Humidity: 48%
UV Index: 10
Wind: 7 mph
2 PM
Cloudy Weather
86°
Feels Like 93°
43
Humidity: 44%
UV Index: 9
Wind: 7 mph
3 PM
Cloudy Weather
88°
Feels Like 93°
47
Humidity: 41%
UV Index: 6
Wind: 7 mph
4 PM
Sunny with a Chance of Thunderstorms
88°
Feels Like 88°
51
Humidity: 45%
UV Index: 4
Wind: 7 mph
5 PM
Cloudy Weather
90°
Feels Like 91°
24
Humidity: 40%
UV Index: 3
Wind: 7 mph
6 PM
Cloudy Weather
88°
Feels Like 90°
19
Humidity: 43%
UV Index: 2
Wind: 7 mph
7 PM
Cloudy Weather
86°
Feels Like 84°
17
Humidity: 45%
UV Index: 1
Wind: 7 mph
8 PM
Cloudy Weather
82°
Feels Like 82°
14
Humidity: 52%
UV Index: 0
Wind: 7 mph
9 PM
Cloudy Night
81°
Feels Like 79°
14
Humidity: 60%
UV Index: 0
Wind: 6 mph
10 PM
Cloudy Night
77°
Feels Like 75°
14
Humidity: 68%
UV Index: 0
Wind: 6 mph
11 PM
Cloudy Night
73°
Feels Like 73°
14
Humidity: 75%
UV Index: 0
Wind: 5 mph

Hourly Air Quality Forecast - AQI (US EPA)

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

Pollutant Concentrations:

  • PM2.5: 5.69 µg/m³
  • PM10: 7.07 µg/m³
  • O3: 0.027 ppm
  • NO2: 1.1 ppb
  • SO2: 0.4 ppb
  • CO: 0.11 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: O3
Details

Pollutant Concentrations:

  • PM2.5: 6.09 µg/m³
  • PM10: 7.51 µg/m³
  • O3: 0.029 ppm
  • NO2: 0.9 ppb
  • SO2: 0.4 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 6.81 µg/m³
  • PM10: 8.23 µg/m³
  • O3: 0.033 ppm
  • NO2: 0.7 ppb
  • SO2: 0.4 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 6.41 µg/m³
  • PM10: 7.46 µg/m³
  • O3: 0.046 ppm
  • NO2: 0.5 ppb
  • SO2: 0.3 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.82 µg/m³
  • PM10: 6.66 µg/m³
  • O3: 0.051 ppm
  • NO2: 0.4 ppb
  • SO2: 0.2 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 6 µg/m³
  • PM10: 6.85 µg/m³
  • O3: 0.052 ppm
  • NO2: 0.4 ppb
  • SO2: 0.2 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.89 µg/m³
  • PM10: 6.74 µg/m³
  • O3: 0.054 ppm
  • NO2: 0.3 ppb
  • SO2: 0.2 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.44 µg/m³
  • PM10: 6.27 µg/m³
  • O3: 0.054 ppm
  • NO2: 0.4 ppb
  • SO2: 0.1 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.97 µg/m³
  • PM10: 5.76 µg/m³
  • O3: 0.054 ppm
  • NO2: 0.4 ppb
  • SO2: 0.1 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.75 µg/m³
  • PM10: 5.46 µg/m³
  • O3: 0.049 ppm
  • NO2: 0.9 ppb
  • SO2: 0.1 ppb
  • CO: 0.11 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: O3
Details

Pollutant Concentrations:

  • PM2.5: 4.79 µg/m³
  • PM10: 5.46 µg/m³
  • O3: 0.041 ppm
  • NO2: 1.5 ppb
  • SO2: 0.2 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.81 µg/m³
  • PM10: 5.41 µg/m³
  • O3: 0.035 ppm
  • NO2: 1.9 ppb
  • SO2: 0.2 ppb
  • CO: 0.12 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: 4.71 µg/m³
  • PM10: 5.26 µg/m³
  • O3: 0.027 ppm
  • NO2: 2 ppb
  • SO2: 0.1 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.76 µg/m³
  • PM10: 5.37 µg/m³
  • O3: 0.021 ppm
  • NO2: 2.2 ppb
  • SO2: 0.1 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.88 µg/m³
  • PM10: 5.55 µg/m³
  • O3: 0.017 ppm
  • NO2: 2.2 ppb
  • SO2: 0.1 ppb
  • CO: 0.12 ppm

Health Recommendations:

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