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Active Weather Warnings

Air Quality Alert

Weather in Bellingham, Washington

02:22 PM

Now

77° F

Feels Like 84°

Precipitation 0 %

Wind 7 mph

UV Index (0 - 11+) 7

Humidity 55 %

Today

Day 81°

Night 59°

Precipitation 0 %

Wind 6 mph

UV Index (0 - 11+) 7

Bellingham Weather Forecast Updated

Last updated on July 20, 2026 at 12:50 PM

Air Quality in Bellingham

NOW

37 AQI

Good air quality Dominant pollutant: O₃

Pollutant Concentrations:

PM_2.5 4.33 µg/m³

PM₁₀ 4.97 µg/m³

O₃ 0.040 ppm

NO₂ 0.4 ppb

SO₂ 0.3 ppb

CO 0.08 ppm

NH₃ 0.17 µg/m³

NO 0.15 µg/m³

PM_2.5 – Fine particles <2.5μm

PM₁₀ – Inhalable particles <10μm

O₃ – Ozone

NO₂ – Nitrogen dioxide

SO₂ – Sulfur dioxide

CO – Carbon monoxide

NH₃ – Ammonia

NO – Nitric oxide

Health Recommendations:

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

Show raw pollutant concentrations (µg/m³)

PM_2.5 – 4.33 µg/m³

PM₁₀ – 4.97 µg/m³

O₃ – 78.44 µg/m³

NO₂ – 0.69 µg/m³

SO₂ – 0.82 µg/m³

CO – 90.2 µg/m³

NH₃ – 0.17 µg/m³

NO – 0.15 µg/m³

View Hourly Air Quality Forecast

Weather Alerts and Warnings for Bellingham

Air Quality Alert

Air Quality Alert issued July 20 at 12:48PM PDT by NWS Seattle WA

Jul 20, 12:48 PM → Jul 22, 9:00 AM

An Air Quality Alert has been issued by the Northwest Clean Air
Agency until 9 AM PDT Wednesday.

An Air Quality Alert has been issued for Skagit and Whatcom Counties,
effective immediately through Wednesday July 22nd at 9am due to
expected wildfire smoke from Canadian wildfires.

Particulate matter (PM2.5) levels may reach Unhealthy for Sensitive
Groups. When air quality is Unhealthy for Sensitive Groups, sensitive
groups should take steps to reduce exposure. Limit time outside,
avoid strenuous outdoor activity, and follow tips for cleaner indoor
air. Everyone should watch for symptoms as a sign to reduce exposure.

For current air quality conditions and additional information visit
https://nwcleanairwa.gov

Updated: Jul 20, 12:50 PM Source: NWS Alert