Hourly Weather | Today Wednesday, August 12, 2026
Seattle, Washington
6 AM
Cloudy Weather
63°
Feels Like 63°
0
Humidity: 84%
UV Index: 0
Wind: 5 mph
7 AM
Cloudy Weather
63°
Feels Like 63°
1
Humidity: 80%
UV Index: 0
Wind: 5 mph
8 AM
Cloudy Weather
63°
Feels Like 63°
3
Humidity: 80%
UV Index: 0
Wind: 5 mph
9 AM
Cloudy Weather
63°
Feels Like 64°
3
Humidity: 78%
UV Index: 1
Wind: 5 mph
10 AM
Cloudy Weather
64°
Feels Like 66°
3
Humidity: 73%
UV Index: 1
Wind: 5 mph
11 AM
Cloudy Weather
66°
Feels Like 68°
3
Humidity: 69%
UV Index: 2
Wind: 5 mph
12 PM
Cloudy Weather
70°
Feels Like 72°
3
Humidity: 65%
UV Index: 3
Wind: 6 mph
1 PM
Cloudy Weather
72°
Feels Like 73°
4
Humidity: 61%
UV Index: 3
Wind: 6 mph
2 PM
Cloudy Weather
72°
Feels Like 79°
7
Humidity: 58%
UV Index: 6
Wind: 7 mph
3 PM
Cloudy Weather
73°
Feels Like 79°
7
Humidity: 55%
UV Index: 5
Wind: 7 mph
4 PM
Cloudy Weather
73°
Feels Like 77°
7
Humidity: 54%
UV Index: 4
Wind: 7 mph
5 PM
Cloudy Weather
75°
Feels Like 77°
7
Humidity: 51%
UV Index: 3
Wind: 7 mph
6 PM
Cloudy Weather
73°
Feels Like 73°
7
Humidity: 53%
UV Index: 2
Wind: 7 mph
7 PM
Cloudy Weather
73°
Feels Like 72°
6
Humidity: 54%
UV Index: 1
Wind: 7 mph
8 PM
Cloudy Weather
72°
Feels Like 70°
4
Humidity: 57%
UV Index: 0
Wind: 6 mph
9 PM
Cloudy Night
70°
Feels Like 66°
4
Humidity: 62%
UV Index: 0
Wind: 6 mph
10 PM
Cloudy Night
68°
Feels Like 64°
4
Humidity: 67%
UV Index: 0
Wind: 6 mph
11 PM
Cloudy Night
66°
Feels Like 64°
4
Humidity: 70%
UV Index: 0
Wind: 5 mph

Hourly Air Quality Forecast - AQI (US EPA)

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

Pollutant Concentrations:

  • PM2.5: 1.98 µg/m³
  • PM10: 2.87 µg/m³
  • O3: 0.017 ppm
  • NO2: 1.1 ppb
  • SO2: 0.3 ppb
  • CO: 0.07 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.91 µg/m³
  • PM10: 2.75 µg/m³
  • O3: 0.017 ppm
  • NO2: 1.3 ppb
  • SO2: 0.3 ppb
  • CO: 0.07 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.85 µg/m³
  • PM10: 2.65 µg/m³
  • O3: 0.017 ppm
  • NO2: 1.7 ppb
  • SO2: 0.4 ppb
  • CO: 0.07 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.77 µg/m³
  • PM10: 2.5 µg/m³
  • O3: 0.017 ppm
  • NO2: 2 ppb
  • SO2: 0.5 ppb
  • CO: 0.07 ppm

Health Recommendations:

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

10 AM
16 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.7 µg/m³
  • PM10: 2.38 µg/m³
  • O3: 0.018 ppm
  • NO2: 2.2 ppb
  • SO2: 0.7 ppb
  • CO: 0.07 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.64 µg/m³
  • PM10: 2.28 µg/m³
  • O3: 0.018 ppm
  • NO2: 2.1 ppb
  • SO2: 0.8 ppb
  • CO: 0.07 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.65 µg/m³
  • PM10: 2.23 µg/m³
  • O3: 0.020 ppm
  • NO2: 2 ppb
  • SO2: 0.8 ppb
  • CO: 0.07 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.7 µg/m³
  • PM10: 2.25 µg/m³
  • O3: 0.022 ppm
  • NO2: 1.7 ppb
  • SO2: 0.8 ppb
  • CO: 0.07 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.7 µg/m³
  • PM10: 2.24 µg/m³
  • O3: 0.023 ppm
  • NO2: 1.5 ppb
  • SO2: 0.8 ppb
  • CO: 0.07 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.67 µg/m³
  • PM10: 2.21 µg/m³
  • O3: 0.026 ppm
  • NO2: 1.1 ppb
  • SO2: 0.7 ppb
  • CO: 0.07 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.59 µg/m³
  • PM10: 2.24 µg/m³
  • O3: 0.028 ppm
  • NO2: 0.9 ppb
  • SO2: 0.5 ppb
  • CO: 0.07 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.57 µg/m³
  • PM10: 2.48 µg/m³
  • O3: 0.028 ppm
  • NO2: 0.8 ppb
  • SO2: 0.4 ppb
  • CO: 0.07 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.68 µg/m³
  • PM10: 3.14 µg/m³
  • O3: 0.029 ppm
  • NO2: 0.9 ppb
  • SO2: 0.4 ppb
  • CO: 0.07 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.95 µg/m³
  • PM10: 4.31 µg/m³
  • O3: 0.028 ppm
  • NO2: 1.1 ppb
  • SO2: 0.4 ppb
  • CO: 0.07 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.27 µg/m³
  • PM10: 5.58 µg/m³
  • O3: 0.028 ppm
  • NO2: 1.3 ppb
  • SO2: 0.4 ppb
  • CO: 0.07 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: 2.53 µg/m³
  • PM10: 6.44 µg/m³
  • O3: 0.026 ppm
  • NO2: 1.4 ppb
  • SO2: 0.3 ppb
  • CO: 0.07 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.83 µg/m³
  • PM10: 7.18 µg/m³
  • O3: 0.025 ppm
  • NO2: 1.4 ppb
  • SO2: 0.3 ppb
  • CO: 0.07 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.11 µg/m³
  • PM10: 7.76 µg/m³
  • O3: 0.023 ppm
  • NO2: 1.5 ppb
  • SO2: 0.2 ppb
  • CO: 0.07 ppm

Health Recommendations:

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