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)
44
Good
Bellingham, Washington
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
7.82 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
34.04 μg/m³
0
55
155
255
425
605+
23.14 ppb
0
55
71
86
201
201+
0.20 ppb
0
36
76
186
605
1005+
5.47 ppb
0
54
101
361
1250
2050+
0.13 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Bellingham, Washington
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AQI 38
Good
7.12μg/m³
PM2.5
28.93μg/m³
PM10
14.61ppb
O3
0.22ppb
SO2
12.01ppb
NO2
0.21ppm
CO
AQI 38
Good
6.91μg/m³
PM2.5
24.63μg/m³
PM10
13.90ppb
O3
0.21ppb
SO2
12.54ppb
NO2
0.21ppm
CO
AQI 38
Good
6.88μg/m³
PM2.5
30.90μg/m³
PM10
20.91ppb
O3
0.23ppb
SO2
9.24ppb
NO2
0.20ppm
CO
AQI 27
Good
4.57μg/m³
PM2.5
20.53μg/m³
PM10
21.38ppb
O3
0.32ppb
SO2
10.33ppb
NO2
0.18ppm
CO
AQI 27
Good
4.61μg/m³
PM2.5
20.79μg/m³
PM10
15.48ppb
O3
0.24ppb
SO2
11.88ppb
NO2
0.20ppm
CO
AQI 27
Good
5.03μg/m³
PM2.5
22.57μg/m³
PM10
16.06ppb
O3
0.24ppb
SO2
11.80ppb
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 03:00:00 on 2025-10-22.
The best air quality in Bellingham, Washington was recorded at 03:00:00 on 2025-10-22.
The real-time air quality index in Bellingham, Washington is 27, currently categorized as Good.
The most common pollutant in Bellingham, Washington is PM2.5.
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 5.046 μg/m3.
The current PM10 levels in Bellingham, Washington are 21.566 μg/m3.
The current carbon monoxide (CO) level in Bellingham, Washington is 0.225 ppm.
The current sulfur dioxide (SO2) levels in Bellingham, Washington are 0.198 ppb.
The current ozone (O3) levels at Bellingham, Washington is 16.616 ppm.
The current nitrogen dioxide (NO2) levels at Bellingham, Washington is 12.883 ppb.
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