Hourly Weather | Today Monday, September 21, 2026
Renton, Washington
12 PM
Cloudy Weather
63°
Feels Like 66°
0
Humidity: 73%
UV Index: 3
Wind: 6 mph
1 PM
Cloudy Weather
64°
Feels Like 70°
0
Humidity: 69%
UV Index: 3
Wind: 6 mph
2 PM
Cloudy Weather
64°
Feels Like 68°
0
Humidity: 67%
UV Index: 3
Wind: 6 mph
3 PM
Cloudy Weather
66°
Feels Like 68°
0
Humidity: 63%
UV Index: 3
Wind: 6 mph
4 PM
Cloudy Weather
66°
Feels Like 68°
0
Humidity: 61%
UV Index: 2
Wind: 6 mph
5 PM
Cloudy Weather
68°
Feels Like 68°
0
Humidity: 59%
UV Index: 1
Wind: 6 mph
6 PM
Cloudy Weather
66°
Feels Like 64°
0
Humidity: 63%
UV Index: 1
Wind: 6 mph
7 PM
Cloudy Weather
64°
Feels Like 63°
0
Humidity: 69%
UV Index: 0
Wind: 6 mph
8 PM
Cloudy Night
63°
Feels Like 63°
0
Humidity: 70%
UV Index: 0
Wind: 6 mph
9 PM
Cloudy Night
61°
Feels Like 61°
0
Humidity: 75%
UV Index: 0
Wind: 5 mph
10 PM
Cloudy Night
59°
Feels Like 59°
0
Humidity: 80%
UV Index: 0
Wind: 5 mph
11 PM
Cloudy Night
57°
Feels Like 57°
0
Humidity: 84%
UV Index: 0
Wind: 5 mph

Hourly Air Quality Forecast - AQI (US EPA)

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

Pollutant Concentrations:

  • PM2.5: 2.68 µg/m³
  • PM10: 3.87 µg/m³
  • O3: 0.034 ppm
  • NO2: 2.1 ppb
  • SO2: 0.6 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.4 µg/m³
  • PM10: 3.49 µg/m³
  • O3: 0.038 ppm
  • NO2: 1.8 ppb
  • SO2: 0.6 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.02 µg/m³
  • PM10: 3.04 µg/m³
  • O3: 0.039 ppm
  • NO2: 1.6 ppb
  • SO2: 0.6 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.63 µg/m³
  • PM10: 2.54 µg/m³
  • O3: 0.042 ppm
  • NO2: 1.2 ppb
  • SO2: 0.5 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.27 µg/m³
  • PM10: 2.06 µg/m³
  • O3: 0.042 ppm
  • NO2: 0.9 ppb
  • SO2: 0.4 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 0.98 µg/m³
  • PM10: 1.69 µg/m³
  • O3: 0.040 ppm
  • NO2: 0.8 ppb
  • SO2: 0.3 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 0.82 µg/m³
  • PM10: 1.49 µg/m³
  • O3: 0.038 ppm
  • NO2: 1 ppb
  • SO2: 0.3 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 0.76 µg/m³
  • PM10: 1.43 µg/m³
  • O3: 0.035 ppm
  • NO2: 1.4 ppb
  • SO2: 0.3 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 0.72 µg/m³
  • PM10: 1.38 µg/m³
  • O3: 0.033 ppm
  • NO2: 1.4 ppb
  • SO2: 0.3 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 0.7 µg/m³
  • PM10: 1.33 µg/m³
  • O3: 0.030 ppm
  • NO2: 1.4 ppb
  • SO2: 0.2 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 0.72 µg/m³
  • PM10: 1.37 µg/m³
  • O3: 0.027 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.

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

Pollutant Concentrations:

  • PM2.5: 0.75 µg/m³
  • PM10: 1.43 µg/m³
  • O3: 0.024 ppm
  • NO2: 1.5 ppb
  • SO2: 0.1 ppb
  • CO: 0.11 ppm

Health Recommendations:

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