Hourly Weather | Today Wednesday, September 16, 2026
Washington, District of Columbia
6 PM
Cloudy Weather
82°
Feels Like 82°
0
Humidity: 53%
UV Index: 1
Wind: 7 mph
7 PM
Cloudy Weather
81°
Feels Like 81°
0
Humidity: 56%
UV Index: 0
Wind: 7 mph
8 PM
Cloudy Night
79°
Feels Like 79°
0
Humidity: 61%
UV Index: 0
Wind: 7 mph
9 PM
Cloudy Night
75°
Feels Like 75°
0
Humidity: 68%
UV Index: 0
Wind: 6 mph
10 PM
Cloudy Night
73°
Feels Like 73°
0
Humidity: 75%
UV Index: 0
Wind: 6 mph
11 PM
Cloudy Night
73°
Feels Like 72°
0
Humidity: 76%
UV Index: 0
Wind: 6 mph

Hourly Air Quality Forecast - AQI (US EPA)

6 PM
55 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 8.95 µg/m³
  • PM10: 13.01 µg/m³
  • O3: 0.056 ppm
  • NO2: 1.6 ppb
  • SO2: 0.6 ppb
  • CO: 0.17 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

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

Pollutant Concentrations:

  • PM2.5: 9.29 µg/m³
  • PM10: 13.55 µg/m³
  • O3: 0.048 ppm
  • NO2: 2.7 ppb
  • SO2: 0.5 ppb
  • CO: 0.17 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 9.48 µg/m³
  • PM10: 13.93 µg/m³
  • O3: 0.042 ppm
  • NO2: 3.4 ppb
  • SO2: 0.5 ppb
  • CO: 0.18 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: 9.38 µg/m³
  • PM10: 14 µg/m³
  • O3: 0.038 ppm
  • NO2: 3.6 ppb
  • SO2: 0.4 ppb
  • CO: 0.18 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 9.22 µg/m³
  • PM10: 14.04 µg/m³
  • O3: 0.034 ppm
  • NO2: 3.6 ppb
  • SO2: 0.4 ppb
  • CO: 0.18 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 8.93 µg/m³
  • PM10: 13.87 µg/m³
  • O3: 0.030 ppm
  • NO2: 3.5 ppb
  • SO2: 0.3 ppb
  • CO: 0.18 ppm

Health Recommendations:

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