Hourly Weather | Today Wednesday, May 20, 2026
Bellingham, Washington
5 PM
Cloudy Weather
66°
Feels Like 68°
0
Humidity: 53%
UV Index: 3
Wind: 6 mph
6 PM
Cloudy Weather
64°
Feels Like 66°
0
Humidity: 55%
UV Index: 2
Wind: 6 mph
7 PM
Cloudy Weather
63°
Feels Like 63°
0
Humidity: 59%
UV Index: 1
Wind: 5 mph
8 PM
Cloudy Weather
61°
Feels Like 61°
0
Humidity: 63%
UV Index: 1
Wind: 4 mph
9 PM
Cloudy Night
57°
Feels Like 57°
0
Humidity: 72%
UV Index: 0
Wind: 4 mph
10 PM
Cloudy Night
54°
Feels Like 55°
0
Humidity: 79%
UV Index: 0
Wind: 4 mph
11 PM
Cloudy Night
52°
Feels Like 54°
0
Humidity: 83%
UV Index: 0
Wind: 4 mph

Hourly Air Quality Forecast - AQI (US EPA)

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

Pollutant Concentrations:

  • PM2.5: 1.9 µg/m³
  • PM10: 3 µg/m³
  • O3: 0.037 ppm
  • NO2: 0.3 ppb
  • SO2: 0.2 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.99 µg/m³
  • PM10: 3.13 µg/m³
  • O3: 0.034 ppm
  • NO2: 0.6 ppb
  • SO2: 0.2 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.12 µg/m³
  • PM10: 3.39 µg/m³
  • O3: 0.029 ppm
  • NO2: 1 ppb
  • SO2: 0.2 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.19 µg/m³
  • PM10: 3.61 µg/m³
  • O3: 0.025 ppm
  • NO2: 1.3 ppb
  • SO2: 0.1 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.27 µg/m³
  • PM10: 3.78 µg/m³
  • O3: 0.021 ppm
  • NO2: 1.6 ppb
  • SO2: 0.1 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.38 µg/m³
  • PM10: 3.95 µg/m³
  • O3: 0.016 ppm
  • NO2: 1.9 ppb
  • SO2: 0.1 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.46 µg/m³
  • PM10: 4.07 µg/m³
  • O3: 0.012 ppm
  • NO2: 2 ppb
  • SO2: 0.1 ppb
  • CO: 0.11 ppm

Health Recommendations:

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