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
4.87 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
19.65 μg/m³
0
55
155
255
425
605+
17.90 ppb
0
55
71
86
201
201+
0.21 ppb
0
36
76
186
605
1005+
5.64 ppb
0
54
101
361
1250
2050+
0.10 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Bellevue, Washington
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AQI 22
Good
4.13μg/m³
PM2.5
16.45μg/m³
PM10
21.78ppb
O3
0.30ppb
SO2
4.60ppb
NO2
0.10ppm
CO
AQI 22
Good
4.26μg/m³
PM2.5
17.96μg/m³
PM10
22.65ppb
O3
0.31ppb
SO2
4.69ppb
NO2
0.10ppm
CO
AQI 22
Good
3.63μg/m³
PM2.5
15.33μg/m³
PM10
21.18ppb
O3
0.31ppb
SO2
4.64ppb
NO2
0.10ppm
CO
AQI 22
Good
3.98μg/m³
PM2.5
16.92μg/m³
PM10
21.53ppb
O3
0.31ppb
SO2
4.69ppb
NO2
0.10ppm
CO
AQI 33
Good
6.04μg/m³
PM2.5
26.35μg/m³
PM10
21.03ppb
O3
0.30ppb
SO2
5.13ppb
NO2
0.10ppm
CO
AQI 18
Good
3.45μg/m³
PM2.5
14.02μg/m³
PM10
18.89ppb
O3
0.31ppb
SO2
4.69ppb
NO2
0.10ppm
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 08:00:00 on 2025-07-20.
The best air quality in Bellevue, Washington was recorded at 05:00:00 on 2025-07-20.
The real-time air quality index in Bellevue, Washington is 22, currently categorized as Good.
The most common pollutant in Bellevue, Washington is PM2.5.
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 4.334 μg/m3.
The current PM10 levels in Bellevue, Washington are 18.268 μg/m3.
The current carbon monoxide (CO) level in Bellevue, Washington is 0.1 ppm.
The current sulfur dioxide (SO2) levels in Bellevue, Washington are 0.141 ppb.
The current ozone (O3) levels at Bellevue, Washington is 22.531 ppm.
The current nitrogen dioxide (NO2) levels at Bellevue, Washington is 4.149 ppb.
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