Hourly Weather | Today › Thursday, October 8, 2026
Sammamish, Washington
8 AM
Cloudy Weather
52°
Feels Like 52°
0
Humidity: 90%
UV Index: 0
Wind: 4 mph
9 AM
Cloudy Weather
54°
Feels Like 57°
0
Humidity: 86%
UV Index: 1
Wind: 2 mph
10 AM
Cloudy Weather
55°
Feels Like 61°
0
Humidity: 84%
UV Index: 2
Wind: 4 mph
11 AM
Cloudy Weather
59°
Feels Like 64°
0
Humidity: 79%
UV Index: 3
Wind: 4 mph
12 PM
Cloudy Weather
63°
Feels Like 70°
0
Humidity: 73%
UV Index: 3
Wind: 5 mph
1 PM
Cloudy Weather
64°
Feels Like 70°
0
Humidity: 67%
UV Index: 3
Wind: 5 mph
2 PM
Cloudy Weather
66°
Feels Like 70°
0
Humidity: 64%
UV Index: 3
Wind: 5 mph
3 PM
Cloudy Weather
68°
Feels Like 70°
0
Humidity: 62%
UV Index: 3
Wind: 5 mph
4 PM
Cloudy Weather
70°
Feels Like 72°
0
Humidity: 59%
UV Index: 2
Wind: 5 mph
5 PM
Cloudy Weather
68°
Feels Like 68°
0
Humidity: 62%
UV Index: 1
Wind: 5 mph
6 PM
Cloudy Weather
66°
Feels Like 64°
0
Humidity: 68%
UV Index: 0
Wind: 5 mph
7 PM
Cloudy Night
63°
Feels Like 63°
0
Humidity: 76%
UV Index: 0
Wind: 4 mph
8 PM
Cloudy Night
61°
Feels Like 61°
0
Humidity: 81%
UV Index: 0
Wind: 4 mph
9 PM
Cloudy Night
57°
Feels Like 54°
0
Humidity: 88%
UV Index: 0
Wind: 10 mph
10 PM
Cloudy Night
57°
Feels Like 57°
0
Humidity: 89%
UV Index: 0
Wind: 4 mph
11 PM
Cloudy Night
55°
Feels Like 55°
1
Humidity: 90%
UV Index: 0
Wind: 4 mph

Hourly Air Quality Forecast - AQI (US EPA)

8 AM
59 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 16.11 µg/m³
  • PM10: 18.76 µg/m³
  • O3: 0.011 ppm
  • NO2: 6.5 ppb
  • SO2: 0.3 ppb
  • CO: 0.21 ppm

Health Recommendations:

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

9 AM
58 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 15.97 µg/m³
  • PM10: 18.61 µg/m³
  • O3: 0.011 ppm
  • NO2: 6.2 ppb
  • SO2: 0.3 ppb
  • CO: 0.22 ppm

Health Recommendations:

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

10 AM
57 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 15.49 µg/m³
  • PM10: 18.09 µg/m³
  • O3: 0.013 ppm
  • NO2: 5.2 ppb
  • SO2: 0.3 ppb
  • CO: 0.22 ppm

Health Recommendations:

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

11 AM
56 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 14.85 µg/m³
  • PM10: 17.33 µg/m³
  • O3: 0.017 ppm
  • NO2: 4.7 ppb
  • SO2: 0.5 ppb
  • CO: 0.22 ppm

Health Recommendations:

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

12 PM
51 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 12.45 µg/m³
  • PM10: 14.33 µg/m³
  • O3: 0.031 ppm
  • NO2: 3.7 ppb
  • SO2: 0.8 ppb
  • CO: 0.18 ppm

Health Recommendations:

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

1 PM
49 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 11.79 µg/m³
  • PM10: 13.44 µg/m³
  • O3: 0.037 ppm
  • NO2: 2.9 ppb
  • SO2: 0.8 ppb
  • CO: 0.17 ppm

Health Recommendations:

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

2 PM
51 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 12.36 µg/m³
  • PM10: 13.93 µg/m³
  • O3: 0.042 ppm
  • NO2: 2.4 ppb
  • SO2: 0.9 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

3 PM
48 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 11.51 µg/m³
  • PM10: 12.88 µg/m³
  • O3: 0.046 ppm
  • NO2: 2 ppb
  • SO2: 0.9 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

4 PM
46 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 10.97 µg/m³
  • PM10: 12.26 µg/m³
  • O3: 0.046 ppm
  • NO2: 2 ppb
  • SO2: 0.8 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 10.61 µg/m³
  • PM10: 11.93 µg/m³
  • O3: 0.045 ppm
  • NO2: 2.3 ppb
  • SO2: 0.8 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

6 PM
43 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 10.34 µg/m³
  • PM10: 11.8 µg/m³
  • O3: 0.040 ppm
  • NO2: 3.2 ppb
  • SO2: 0.7 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

7 PM
41 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 9.84 µg/m³
  • PM10: 11.49 µg/m³
  • O3: 0.035 ppm
  • NO2: 3.7 ppb
  • SO2: 0.5 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 8.75 µg/m³
  • PM10: 10.57 µg/m³
  • O3: 0.030 ppm
  • NO2: 3.4 ppb
  • SO2: 0.4 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

9 PM
31 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 7.52 µg/m³
  • PM10: 9.37 µg/m³
  • O3: 0.027 ppm
  • NO2: 2.9 ppb
  • SO2: 0.2 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 6.76 µg/m³
  • PM10: 8.58 µg/m³
  • O3: 0.024 ppm
  • NO2: 2.6 ppb
  • SO2: 0.2 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 6.14 µg/m³
  • PM10: 7.87 µg/m³
  • O3: 0.022 ppm
  • NO2: 2.3 ppb
  • SO2: 0.1 ppb
  • CO: 0.13 ppm

Health Recommendations:

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