Stay updated with real-time air quality in Bellingham, Washington featuring accurate data on AQI, PM2.5, PM10, O3, NO2, SO2, and CO levels. Use our interactive map and detailed forecasts to monitor pollution trends, manage health risks, and plan your daily activities with confidence.
Live AQI (Air Quality Index)
33
Good
Bellingham, Washington
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
5.03 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
15.48 μg/m³
0
55
155
255
425
605+
36.00 ppb
0
55
71
86
201
201+
0.11 ppb
0
36
76
186
605
1005+
3.88 ppb
0
54
101
361
1250
2050+
0.20 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Bellingham, Washington
Scroll To Air Quality MapLoading...
AQI 31
Good
5.01μg/m³
PM2.5
14.85μg/m³
PM10
34.07ppb
O3
0.11ppb
SO2
2.99ppb
NO2
0.20ppm
CO
AQI 32
Good
5.03μg/m³
PM2.5
13.63μg/m³
PM10
34.75ppb
O3
0.11ppb
SO2
2.96ppb
NO2
0.20ppm
CO
AQI 30
Good
4.31μg/m³
PM2.5
13.04μg/m³
PM10
31.75ppb
O3
0.11ppb
SO2
2.94ppb
NO2
0.20ppm
CO
AQI 39
Good
4.54μg/m³
PM2.5
17.88μg/m³
PM10
41.94ppb
O3
0.12ppb
SO2
4.58ppb
NO2
0.18ppm
CO
AQI 35
Good
4.70μg/m³
PM2.5
16.13μg/m³
PM10
38.32ppb
O3
0.11ppb
SO2
4.87ppb
NO2
0.20ppm
CO
AQI 34
Good
4.59μg/m³
PM2.5
14.84μg/m³
PM10
36.72ppb
O3
0.11ppb
SO2
5.03ppb
NO2
0.20ppm
CO
Air quality measurements for Washington, USA meet strict US EPA standards. These measurements are collected from reliable sources, including satellites and ground-based monitoring systems. Advanced algorithms and machine learning techniques are applied to the data, factoring in variables such as traffic and population density, to ensure precision and reliability.
Source: Ambee Data Sources
Air quality data for Bellingham, Washington is updated on an hourly basis.
The worst air quality in Bellingham, Washington was recorded at 07:00:00 on 2026-03-05.
The best air quality in Bellingham, Washington was recorded at 04:00:00 on 2026-03-05.
The real-time air quality index in Bellingham, Washington is 33, currently categorized as Good.
The most common pollutant in Bellingham, Washington is O3.
If the air quality in Bellingham, Washington is poor, limit outdoor activities and use a mask to safeguard your health.
The measured PM2.5 levels in Bellingham, Washington at present are 5.027 μg/m3.
The current PM10 levels in Bellingham, Washington are 15.481 μg/m3.
The current carbon monoxide (CO) level in Bellingham, Washington is 0.2 ppm.
The current sulfur dioxide (SO2) levels in Bellingham, Washington are 0.114 ppb.
The current ozone (O3) levels at Bellingham, Washington is 36.001 ppm.
The current nitrogen dioxide (NO2) levels at Bellingham, Washington is 3.88 ppb.
All Rights Reserved © Ambee Inc. 2025