Stay updated with real-time air quality in Bellevue, 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)
26
Good
Bellevue, Washington
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
1.90 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
7.37 μg/m³
0
55
155
255
425
605+
28.41 ppb
0
55
71
86
201
201+
0.23 ppb
0
36
76
186
605
1005+
3.65 ppb
0
54
101
361
1250
2050+
0.14 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Bellevue, Washington
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AQI 26
Good
2.75μg/m³
PM2.5
10.45μg/m³
PM10
28.32ppb
O3
0.15ppb
SO2
3.85ppb
NO2
0.14ppm
CO
AQI 25
Good
2.15μg/m³
PM2.5
8.24μg/m³
PM10
26.87ppb
O3
0.15ppb
SO2
4.07ppb
NO2
0.15ppm
CO
AQI 25
Good
1.70μg/m³
PM2.5
7.11μg/m³
PM10
27.11ppb
O3
0.15ppb
SO2
3.06ppb
NO2
0.14ppm
CO
AQI 25
Good
1.75μg/m³
PM2.5
7.14μg/m³
PM10
26.80ppb
O3
0.15ppb
SO2
3.37ppb
NO2
0.14ppm
CO
AQI 25
Good
3.02μg/m³
PM2.5
12.48μg/m³
PM10
26.68ppb
O3
0.15ppb
SO2
6.30ppb
NO2
0.18ppm
CO
AQI 26
Good
1.92μg/m³
PM2.5
5.53μg/m³
PM10
27.98ppb
O3
0.15ppb
SO2
1.97ppb
NO2
0.14ppm
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 Bellevue, Washington is updated on an hourly basis.
The worst air quality in Bellevue, Washington was recorded at 03:00:00 on 2026-03-05.
The best air quality in Bellevue, Washington was recorded at 06:00:00 on 2026-03-05.
The real-time air quality index in Bellevue, Washington is 26, currently categorized as Good.
The most common pollutant in Bellevue, Washington is O3.
If the air quality in Bellevue, Washington is poor, limit outdoor activities and use a mask to safeguard your health.
The measured PM2.5 levels in Bellevue, Washington at present are 1.895 μg/m3.
The current PM10 levels in Bellevue, Washington are 7.37 μg/m3.
The current carbon monoxide (CO) level in Bellevue, Washington is 0.144 ppm.
The current sulfur dioxide (SO2) levels in Bellevue, Washington are 0.233 ppb.
The current ozone (O3) levels at Bellevue, Washington is 28.412 ppm.
The current nitrogen dioxide (NO2) levels at Bellevue, Washington is 3.647 ppb.
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