Hourly Weather | Today Tuesday, September 1, 2026
Bellingham, Washington
9 AM
Cloudy Weather
61°
Feels Like 61°
0
Humidity: 81%
UV Index: 1
Wind: 8 mph
10 AM
Cloudy Weather
63°
Feels Like 63°
0
Humidity: 75%
UV Index: 2
Wind: 8 mph
11 AM
Cloudy Weather
64°
Feels Like 64°
0
Humidity: 71%
UV Index: 2
Wind: 9 mph
12 PM
Cloudy Weather
64°
Feels Like 64°
0
Humidity: 70%
UV Index: 3
Wind: 9 mph
1 PM
Cloudy Weather
64°
Feels Like 66°
0
Humidity: 69%
UV Index: 3
Wind: 10 mph
2 PM
Cloudy Weather
66°
Feels Like 68°
1
Humidity: 68%
UV Index: 5
Wind: 10 mph
3 PM
Cloudy Weather
66°
Feels Like 68°
1
Humidity: 67%
UV Index: 4
Wind: 10 mph
4 PM
Cloudy Weather
68°
Feels Like 70°
1
Humidity: 62%
UV Index: 3
Wind: 10 mph
5 PM
Cloudy Weather
66°
Feels Like 66°
1
Humidity: 67%
UV Index: 2
Wind: 9 mph
6 PM
Cloudy Weather
64°
Feels Like 64°
1
Humidity: 68%
UV Index: 1
Wind: 8 mph
7 PM
Cloudy Weather
64°
Feels Like 63°
3
Humidity: 70%
UV Index: 1
Wind: 7 mph
8 PM
Cloudy Weather
63°
Feels Like 61°
6
Humidity: 74%
UV Index: 0
Wind: 6 mph
9 PM
Cloudy Weather
61°
Feels Like 61°
6
Humidity: 78%
UV Index: 0
Wind: 6 mph
10 PM
Cloudy Weather
61°
Feels Like 61°
6
Humidity: 78%
UV Index: 0
Wind: 6 mph
11 PM
Cloudy Weather
61°
Feels Like 61°
7
Humidity: 78%
UV Index: 0
Wind: 5 mph

Hourly Air Quality Forecast - AQI (US EPA)

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

Pollutant Concentrations:

  • PM2.5: 3.81 µg/m³
  • PM10: 5.78 µg/m³
  • O3: 0.013 ppm
  • NO2: 1.4 ppb
  • SO2: 0.2 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.6 µg/m³
  • PM10: 5.7 µg/m³
  • O3: 0.014 ppm
  • NO2: 1.1 ppb
  • SO2: 0.2 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.4 µg/m³
  • PM10: 5.59 µg/m³
  • O3: 0.015 ppm
  • NO2: 0.9 ppb
  • SO2: 0.2 ppb
  • CO: 0.09 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.86 µg/m³
  • PM10: 4.75 µg/m³
  • O3: 0.021 ppm
  • NO2: 0.7 ppb
  • SO2: 0.2 ppb
  • CO: 0.08 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.36 µg/m³
  • PM10: 3.81 µg/m³
  • O3: 0.023 ppm
  • NO2: 0.5 ppb
  • SO2: 0.1 ppb
  • CO: 0.08 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.89 µg/m³
  • PM10: 3.03 µg/m³
  • O3: 0.024 ppm
  • NO2: 0.5 ppb
  • SO2: 0.1 ppb
  • CO: 0.08 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.45 µg/m³
  • PM10: 2.32 µg/m³
  • O3: 0.024 ppm
  • NO2: 0.4 ppb
  • SO2: 0.1 ppb
  • CO: 0.08 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.17 µg/m³
  • PM10: 1.88 µg/m³
  • O3: 0.024 ppm
  • NO2: 0.4 ppb
  • SO2: 0.1 ppb
  • CO: 0.07 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.01 µg/m³
  • PM10: 1.63 µg/m³
  • O3: 0.023 ppm
  • NO2: 0.5 ppb
  • SO2: 0.1 ppb
  • CO: 0.07 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 0.96 µg/m³
  • PM10: 1.56 µg/m³
  • O3: 0.023 ppm
  • NO2: 0.7 ppb
  • SO2: 0.1 ppb
  • CO: 0.08 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1 µg/m³
  • PM10: 1.64 µg/m³
  • O3: 0.022 ppm
  • NO2: 0.9 ppb
  • SO2: 0.1 ppb
  • CO: 0.08 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.04 µg/m³
  • PM10: 1.73 µg/m³
  • O3: 0.022 ppm
  • NO2: 1 ppb
  • SO2: 0.1 ppb
  • CO: 0.08 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.08 µg/m³
  • PM10: 1.8 µg/m³
  • O3: 0.021 ppm
  • NO2: 1 ppb
  • SO2: 0.1 ppb
  • CO: 0.08 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.11 µg/m³
  • PM10: 1.9 µg/m³
  • O3: 0.020 ppm
  • NO2: 1.1 ppb
  • SO2: 0.1 ppb
  • CO: 0.08 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.15 µg/m³
  • PM10: 2.02 µg/m³
  • O3: 0.019 ppm
  • NO2: 1.1 ppb
  • SO2: 0.1 ppb
  • CO: 0.08 ppm

Health Recommendations:

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