Hourly Weather | Today Tuesday, April 7, 2026
Sammamish, Washington
6 AM
Cloudy Night
45°
Feels Like 43°
1
Humidity: 76%
UV Index: 0
Wind: 5 mph
7 AM
Cloudy Weather
43°
Feels Like 43°
1
Humidity: 77%
UV Index: 0
Wind: 5 mph
8 AM
Cloudy Weather
45°
Feels Like 46°
0
Humidity: 72%
UV Index: 1
Wind: 5 mph
9 AM
Cloudy Weather
45°
Feels Like 48°
0
Humidity: 69%
UV Index: 2
Wind: 5 mph
10 AM
Cloudy Weather
46°
Feels Like 52°
0
Humidity: 66%
UV Index: 3
Wind: 6 mph
11 AM
Cloudy Weather
48°
Feels Like 55°
0
Humidity: 63%
UV Index: 4
Wind: 6 mph
12 PM
Cloudy Weather
50°
Feels Like 57°
0
Humidity: 57%
UV Index: 5
Wind: 6 mph
1 PM
Cloudy Weather
52°
Feels Like 61°
0
Humidity: 52%
UV Index: 5
Wind: 6 mph
2 PM
Cloudy Weather
54°
Feels Like 61°
0
Humidity: 49%
UV Index: 5
Wind: 6 mph
3 PM
Cloudy Weather
55°
Feels Like 61°
0
Humidity: 46%
UV Index: 4
Wind: 6 mph
4 PM
Cloudy Weather
55°
Feels Like 59°
0
Humidity: 45%
UV Index: 3
Wind: 6 mph
5 PM
Cloudy Weather
55°
Feels Like 57°
0
Humidity: 43%
UV Index: 2
Wind: 6 mph
6 PM
Cloudy Weather
54°
Feels Like 55°
0
Humidity: 46%
UV Index: 1
Wind: 6 mph
7 PM
Cloudy Weather
54°
Feels Like 52°
0
Humidity: 50%
UV Index: 0
Wind: 6 mph
8 PM
Cloudy Night
52°
Feels Like 48°
0
Humidity: 56%
UV Index: 0
Wind: 6 mph
9 PM
Cloudy Night
48°
Feels Like 46°
0
Humidity: 63%
UV Index: 0
Wind: 5 mph
10 PM
Cloudy Night
45°
Feels Like 45°
0
Humidity: 69%
UV Index: 0
Wind: 5 mph
11 PM
Cloudy Night
43°
Feels Like 41°
0
Humidity: 76%
UV Index: 0
Wind: 5 mph

Hourly Air Quality Forecast - AQI (US EPA)

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

Pollutant Concentrations:

  • PM2.5: 1.55 µg/m³
  • PM10: 4.05 µg/m³
  • O3: 0.037 ppm
  • NO2: 1 ppb
  • SO2: 0.2 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.47 µg/m³
  • PM10: 4.09 µg/m³
  • O3: 0.038 ppm
  • NO2: 1.2 ppb
  • SO2: 0.2 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.37 µg/m³
  • PM10: 4.08 µg/m³
  • O3: 0.040 ppm
  • NO2: 1.5 ppb
  • SO2: 0.3 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.18 µg/m³
  • PM10: 3.85 µg/m³
  • O3: 0.043 ppm
  • NO2: 1.4 ppb
  • SO2: 0.3 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.07 µg/m³
  • PM10: 3.67 µg/m³
  • O3: 0.043 ppm
  • NO2: 1.2 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 AM
41 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.04 µg/m³
  • PM10: 3.57 µg/m³
  • O3: 0.044 ppm
  • NO2: 1 ppb
  • SO2: 0.4 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.02 µg/m³
  • PM10: 3.32 µg/m³
  • O3: 0.048 ppm
  • NO2: 0.8 ppb
  • SO2: 0.4 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.09 µg/m³
  • PM10: 3.18 µg/m³
  • O3: 0.051 ppm
  • NO2: 0.6 ppb
  • SO2: 0.4 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.26 µg/m³
  • PM10: 3.29 µg/m³
  • O3: 0.052 ppm
  • NO2: 0.6 ppb
  • SO2: 0.4 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.45 µg/m³
  • PM10: 3.42 µg/m³
  • O3: 0.053 ppm
  • NO2: 0.6 ppb
  • SO2: 0.4 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

4 PM
51 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.57 µg/m³
  • PM10: 3.45 µg/m³
  • O3: 0.054 ppm
  • NO2: 0.7 ppb
  • SO2: 0.4 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

5 PM
51 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.65 µg/m³
  • PM10: 3.52 µg/m³
  • O3: 0.054 ppm
  • NO2: 0.8 ppb
  • SO2: 0.4 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.81 µg/m³
  • PM10: 3.8 µg/m³
  • O3: 0.049 ppm
  • NO2: 1.5 ppb
  • SO2: 0.3 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.04 µg/m³
  • PM10: 4.27 µg/m³
  • O3: 0.041 ppm
  • NO2: 2.7 ppb
  • SO2: 0.3 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.28 µg/m³
  • PM10: 4.76 µg/m³
  • O3: 0.036 ppm
  • NO2: 3.7 ppb
  • SO2: 0.2 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.57 µg/m³
  • PM10: 5.28 µg/m³
  • O3: 0.031 ppm
  • NO2: 4.2 ppb
  • SO2: 0.2 ppb
  • CO: 0.16 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: 2.9 µg/m³
  • PM10: 5.85 µg/m³
  • O3: 0.027 ppm
  • NO2: 4.7 ppb
  • SO2: 0.1 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.17 µg/m³
  • PM10: 6.3 µg/m³
  • O3: 0.023 ppm
  • NO2: 5.1 ppb
  • SO2: 0.1 ppb
  • CO: 0.17 ppm

Health Recommendations:

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