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)
17
Good
Bellingham, Washington
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
1.68 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
6.88 μg/m³
0
55
155
255
425
605+
18.17 ppb
0
55
71
86
201
201+
0.19 ppb
0
36
76
186
605
1005+
3.68 ppb
0
54
101
361
1250
2050+
0.10 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Bellingham, Washington
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AQI 14
Good
1.76μg/m³
PM2.5
6.61μg/m³
PM10
15.15ppb
O3
0.26ppb
SO2
2.70ppb
NO2
0.14ppm
CO
AQI 14
Good
2.01μg/m³
PM2.5
7.15μg/m³
PM10
15.33ppb
O3
0.20ppb
SO2
2.85ppb
NO2
0.13ppm
CO
AQI 14
Good
2.11μg/m³
PM2.5
7.32μg/m³
PM10
15.29ppb
O3
0.27ppb
SO2
4.13ppb
NO2
0.13ppm
CO
AQI 15
Good
0.75μg/m³
PM2.5
3.17μg/m³
PM10
16.14ppb
O3
0.41ppb
SO2
8.92ppb
NO2
0.14ppm
CO
AQI 16
Good
1.33μg/m³
PM2.5
3.90μg/m³
PM10
17.36ppb
O3
0.37ppb
SO2
6.70ppb
NO2
0.17ppm
CO
AQI 16
Good
1.32μg/m³
PM2.5
4.15μg/m³
PM10
17.24ppb
O3
0.37ppb
SO2
6.64ppb
NO2
0.16ppm
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 2026-06-08.
The best air quality in Bellingham, Washington was recorded at 12:00:00 on 2026-06-08.
The real-time air quality index in Bellingham, Washington is 14, 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 1.495 μg/m3.
The current PM10 levels in Bellingham, Washington are 5.991 μg/m3.
The current carbon monoxide (CO) level in Bellingham, Washington is 0.121 ppm.
The current sulfur dioxide (SO2) levels in Bellingham, Washington are 0.276 ppb.
The current ozone (O3) levels at Bellingham, Washington is 15.419 ppm.
The current nitrogen dioxide (NO2) levels at Bellingham, Washington is 3.135 ppb.
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