Hourly Weather | Today Friday, October 31, 2025
Washington, District of Columbia
6 PM
Cloudy Weather
57°
Feels Like 50°
0
Humidity: 46%
Wind: 17 mph
UV Index: 0
7 PM
Cloudy Night
55°
Feels Like 48°
0
Humidity: 52%
Wind: 15 mph
UV Index: 0
8 PM
Cloudy Night
54°
Feels Like 46°
0
Humidity: 54%
Wind: 17 mph
UV Index: 0
9 PM
Cloudy Night
54°
Feels Like 46°
0
Humidity: 56%
Wind: 15 mph
UV Index: 0
10 PM
Cloudy Night
52°
Feels Like 46°
0
Humidity: 59%
Wind: 13 mph
UV Index: 0
11 PM
Cloudy Night
52°
Feels Like 45°
0
Humidity: 60%
Wind: 13 mph
UV Index: 0

Hourly Air Quality Forecast - AQI (US EPA)

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

Pollutant Concentrations:

  • PM2.5: 1.9 µg/m³
  • PM10: 2.18 µg/m³
  • O3: 0.046 ppm
  • NO2: 1.3 ppb
  • SO2: 0.4 ppb
  • CO: 0.10 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: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.96 µg/m³
  • PM10: 2.28 µg/m³
  • O3: 0.043 ppm
  • NO2: 1.8 ppb
  • SO2: 0.4 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.04 µg/m³
  • PM10: 2.4 µg/m³
  • O3: 0.042 ppm
  • NO2: 2.2 ppb
  • SO2: 0.4 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.14 µg/m³
  • PM10: 2.55 µg/m³
  • O3: 0.039 ppm
  • NO2: 2.4 ppb
  • SO2: 0.4 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

10 PM
35 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.28 µg/m³
  • PM10: 2.74 µg/m³
  • O3: 0.038 ppm
  • NO2: 2.5 ppb
  • SO2: 0.4 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.43 µg/m³
  • PM10: 2.91 µg/m³
  • O3: 0.036 ppm
  • NO2: 2.5 ppb
  • SO2: 0.4 ppb
  • CO: 0.12 ppm

Health Recommendations:

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