Hourly Weather | Today Thursday, September 11, 2025
Seattle, Washington
3 PM
Cloudy Weather
68°
Feels Like 72°
0
Humidity: 73%
Wind: 5 mph
UV Index: 34
4 PM
Cloudy Weather
68°
Feels Like 72°
0
Humidity: 71%
Wind: 6 mph
UV Index: 27
5 PM
Cloudy Weather
70°
Feels Like 72°
0
Humidity: 68%
Wind: 5 mph
UV Index: 19
6 PM
Cloudy Weather
68°
Feels Like 68°
0
Humidity: 72%
Wind: 5 mph
UV Index: 11
7 PM
Cloudy Weather
66°
Feels Like 64°
0
Humidity: 76%
Wind: 5 mph
UV Index: 2
8 PM
Cloudy Night
64°
Feels Like 63°
0
Humidity: 83%
Wind: 5 mph
UV Index: 0
9 PM
Cloudy Night
63°
Feels Like 63°
0
Humidity: 86%
Wind: 5 mph
UV Index: 0
10 PM
Cloudy Night
61°
Feels Like 61°
0
Humidity: 90%
Wind: 5 mph
UV Index: 0
11 PM
Cloudy Night
61°
Feels Like 61°
0
Humidity: 89%
Wind: 6 mph
UV Index: 0

Hourly Air Quality Forecast - AQI (US EPA)

3 PM
63 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 9.77 µg/m³
  • PM10: 10.28 µg/m³
  • O₃: 28.34 ppb
  • NO₂: 4.77 ppb
  • SO₂: 0.36 ppb
  • CO: 156.01 ppb

Health Recommendations:

Air quality is currently in the acceptable range. However, sensitive individuals should be aware of potential risks from certain pollutants.

4 PM
63 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 9.48 µg/m³
  • PM10: 9.98 µg/m³
  • O₃: 30.54 ppb
  • NO₂: 4.62 ppb
  • SO₂: 0.37 ppb
  • CO: 154.92 ppb

Health Recommendations:

Air quality is currently in the acceptable range. However, sensitive individuals should be aware of potential risks from certain pollutants.

5 PM
63 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 8.94 µg/m³
  • PM10: 9.43 µg/m³
  • O₃: 32.73 ppb
  • NO₂: 4.48 ppb
  • SO₂: 0.38 ppb
  • CO: 153.82 ppb

Health Recommendations:

Air quality is currently in the acceptable range. However, sensitive individuals should be aware of potential risks from certain pollutants.

6 PM
62 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 8.64 µg/m³
  • PM10: 9.12 µg/m³
  • O₃: 27.05 ppb
  • NO₂: 8.51 ppb
  • SO₂: 0.44 ppb
  • CO: 178.43 ppb

Health Recommendations:

Air quality is currently in the acceptable range. However, sensitive individuals should be aware of potential risks from certain pollutants.

7 PM
62 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 9.71 µg/m³
  • PM10: 10.10 µg/m³
  • O₃: 21.37 ppb
  • NO₂: 12.54 ppb
  • SO₂: 0.50 ppb
  • CO: 203.03 ppb

Health Recommendations:

Air quality is currently in the acceptable range. However, sensitive individuals should be aware of potential risks from certain pollutants.

8 PM
61 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 10.41 µg/m³
  • PM10: 10.78 µg/m³
  • O₃: 15.69 ppb
  • NO₂: 16.57 ppb
  • SO₂: 0.57 ppb
  • CO: 227.64 ppb

Health Recommendations:

Air quality is currently in the acceptable range. However, sensitive individuals should be aware of potential risks from certain pollutants.

9 PM
60 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 9.67 µg/m³
  • PM10: 10.05 µg/m³
  • O₃: 14.78 ppb
  • NO₂: 15.76 ppb
  • SO₂: 0.63 ppb
  • CO: 213.15 ppb

Health Recommendations:

Air quality is currently in the acceptable range. However, sensitive individuals should be aware of potential risks from certain pollutants.

10 PM
59 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 8.85 µg/m³
  • PM10: 9.24 µg/m³
  • O₃: 13.87 ppb
  • NO₂: 14.94 ppb
  • SO₂: 0.69 ppb
  • CO: 198.67 ppb

Health Recommendations:

Air quality is currently in the acceptable range. However, sensitive individuals should be aware of potential risks from certain pollutants.

11 PM
59 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 8.46 µg/m³
  • PM10: 8.89 µg/m³
  • O₃: 12.95 ppb
  • NO₂: 14.12 ppb
  • SO₂: 0.75 ppb
  • CO: 184.18 ppb

Health Recommendations:

Air quality is currently in the acceptable range. However, sensitive individuals should be aware of potential risks from certain pollutants.