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)
27
Good
Bellevue, Washington
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
5.39 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
21.25 μg/m³
0
55
155
255
425
605+
29.13 ppb
0
55
71
86
201
201+
0.46 ppb
0
36
76
186
605
1005+
15.62 ppb
0
54
101
361
1250
2050+
0.19 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Bellevue, Washington
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AQI 38
Good
7.27μg/m³
PM2.5
27.79μg/m³
PM10
23.80ppb
O3
0.48ppb
SO2
16.24ppb
NO2
0.19ppm
CO
AQI 33
Good
6.13μg/m³
PM2.5
23.90μg/m³
PM10
27.84ppb
O3
0.44ppb
SO2
14.23ppb
NO2
0.18ppm
CO
AQI 27
Good
4.44μg/m³
PM2.5
16.44μg/m³
PM10
29.27ppb
O3
0.45ppb
SO2
14.42ppb
NO2
0.18ppm
CO
AQI 28
Good
4.85μg/m³
PM2.5
18.40μg/m³
PM10
29.88ppb
O3
0.43ppb
SO2
14.75ppb
NO2
0.18ppm
CO
AQI 56
Moderate
12.13μg/m³
PM2.5
53.00μg/m³
PM10
26.63ppb
O3
0.46ppb
SO2
18.34ppb
NO2
0.19ppm
CO
AQI 27
Good
5.34μg/m³
PM2.5
18.34μg/m³
PM10
26.70ppb
O3
0.43ppb
SO2
13.82ppb
NO2
0.18ppm
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 01:00:00 on 2025-06-06.
The best air quality in Bellevue, Washington was recorded at 01:00:00 on 2025-06-06.
The real-time air quality index in Bellevue, Washington is 27, 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 5.391 μg/m3.
The current PM10 levels in Bellevue, Washington are 21.246 μg/m3.
The current carbon monoxide (CO) level in Bellevue, Washington is 0.186 ppm.
The current sulfur dioxide (SO2) levels in Bellevue, Washington are 0.457 ppb.
The current ozone (O3) levels at Bellevue, Washington is 29.125 ppm.
The current nitrogen dioxide (NO2) levels at Bellevue, Washington is 15.616 ppb.
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