Hourly Weather | Today Monday, May 4, 2026
Marysville, Washington
8 AM
Cloudy Weather
54°
Feels Like 57°
0
Humidity: 92%
UV Index: 2
Wind: 4 mph
9 AM
Cloudy Weather
57°
Feels Like 63°
0
Humidity: 89%
UV Index: 3
Wind: 5 mph
10 AM
Cloudy Weather
61°
Feels Like 66°
0
Humidity: 79%
UV Index: 4
Wind: 6 mph
11 AM
Cloudy Weather
64°
Feels Like 70°
0
Humidity: 67%
UV Index: 5
Wind: 7 mph
12 PM
Cloudy Weather
72°
Feels Like 77°
0
Humidity: 56%
UV Index: 6
Wind: 7 mph
1 PM
Cloudy Weather
75°
Feels Like 82°
0
Humidity: 47%
UV Index: 7
Wind: 7 mph
2 PM
Cloudy Weather
77°
Feels Like 82°
0
Humidity: 44%
UV Index: 6
Wind: 8 mph
3 PM
Cloudy Weather
79°
Feels Like 82°
0
Humidity: 42%
UV Index: 5
Wind: 8 mph
4 PM
Cloudy Weather
79°
Feels Like 81°
0
Humidity: 40%
UV Index: 4
Wind: 8 mph
5 PM
Cloudy Weather
77°
Feels Like 79°
0
Humidity: 43%
UV Index: 3
Wind: 8 mph
6 PM
Cloudy Weather
75°
Feels Like 75°
0
Humidity: 47%
UV Index: 2
Wind: 7 mph
7 PM
Cloudy Weather
72°
Feels Like 70°
0
Humidity: 53%
UV Index: 1
Wind: 7 mph
8 PM
Cloudy Weather
68°
Feels Like 66°
0
Humidity: 60%
UV Index: 0
Wind: 6 mph
9 PM
Night
64°
Feels Like 64°
0
Humidity: 67%
UV Index: 0
Wind: 6 mph
10 PM
Night
61°
Feels Like 61°
0
Humidity: 74%
UV Index: 0
Wind: 5 mph
11 PM
Night
59°
Feels Like 59°
0
Humidity: 79%
UV Index: 0
Wind: 5 mph

Hourly Air Quality Forecast - AQI (US EPA)

8 AM
32 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 7.58 µg/m³
  • PM10: 9.64 µg/m³
  • O3: 0.014 ppm
  • NO2: 4.5 ppb
  • SO2: 0.3 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 7.43 µg/m³
  • PM10: 9.47 µg/m³
  • O3: 0.020 ppm
  • NO2: 3.7 ppb
  • SO2: 0.3 ppb
  • CO: 0.17 ppm

Health Recommendations:

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

10 AM
31 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 7.41 µg/m³
  • PM10: 9.47 µg/m³
  • O3: 0.023 ppm
  • NO2: 3.1 ppb
  • SO2: 0.3 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

11 AM
32 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 7.76 µg/m³
  • PM10: 9.84 µg/m³
  • O3: 0.027 ppm
  • NO2: 2.5 ppb
  • SO2: 0.3 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 7.5 µg/m³
  • PM10: 9.57 µg/m³
  • O3: 0.046 ppm
  • NO2: 1.6 ppb
  • SO2: 0.6 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 7.35 µg/m³
  • PM10: 9.38 µg/m³
  • O3: 0.051 ppm
  • NO2: 1.1 ppb
  • SO2: 0.6 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 7.2 µg/m³
  • PM10: 9.35 µg/m³
  • O3: 0.053 ppm
  • NO2: 0.9 ppb
  • SO2: 0.6 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: 6.77 µg/m³
  • PM10: 9.12 µg/m³
  • O3: 0.053 ppm
  • NO2: 0.8 ppb
  • SO2: 0.5 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 6.17 µg/m³
  • PM10: 8.74 µg/m³
  • O3: 0.052 ppm
  • NO2: 0.8 ppb
  • SO2: 0.5 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.66 µg/m³
  • PM10: 8.44 µg/m³
  • O3: 0.050 ppm
  • NO2: 0.9 ppb
  • SO2: 0.4 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.32 µg/m³
  • PM10: 8.31 µg/m³
  • O3: 0.047 ppm
  • NO2: 1.1 ppb
  • SO2: 0.4 ppb
  • CO: 0.11 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: O3
Details

Pollutant Concentrations:

  • PM2.5: 5.18 µg/m³
  • PM10: 8.47 µg/m³
  • O3: 0.044 ppm
  • NO2: 1.3 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
38 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 5.16 µg/m³
  • PM10: 8.74 µg/m³
  • O3: 0.041 ppm
  • NO2: 1.6 ppb
  • SO2: 0.3 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.16 µg/m³
  • PM10: 8.92 µg/m³
  • O3: 0.037 ppm
  • NO2: 1.7 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
30 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 5.33 µg/m³
  • PM10: 9.3 µg/m³
  • O3: 0.033 ppm
  • NO2: 1.8 ppb
  • SO2: 0.2 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.51 µg/m³
  • PM10: 9.67 µg/m³
  • O3: 0.029 ppm
  • NO2: 1.9 ppb
  • SO2: 0.2 ppb
  • CO: 0.12 ppm

Health Recommendations:

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