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Live air quality index in Bellevue, Washington today

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

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Bellevue, Washington

Last updated: ... (Local time)

Major air pollutants in Bellevue, Washington

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter2.5 (PM2.5)

5.39 μg/m³

0

12.1

35.5

55.5

250.5

500.5+

Particulate Matter10 (PM10)

21.25 μg/m³

0

55

155

255

425

605+

Ozone (O3)

29.13 ppb

0

55

71

86

201

201+

Sulfur Dioxide (SO2)

0.46 ppb

0

36

76

186

605

1005+

Nitrogen Dioxide (NO2)

15.62 ppb

0

54

101

361

1250

2050+

Carbon Monoxide (CO)

0.19 ppm

0

4.5

9.5

12.5

230.5

50.5+

Pollen Level

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Bellevue, Washington air quality map: Real-time AQI near you




How accurate is Washington, USA air quality data?

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.


Frequently asked questions

How frequently is the air quality data for Bellevue, Washington updated?

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Air quality data for Bellevue, Washington is updated on an hourly basis.


When did Bellevue, Washington experience the worst air quality in the last 24 hours?

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The worst air quality in Bellevue, Washington was recorded at 01:00:00 on 2025-06-06.


When did Bellevue, Washington have its best air quality in the last 24 hours?

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The best air quality in Bellevue, Washington was recorded at 01:00:00 on 2025-06-06.


What is the real-time air quality index for Bellevue, Washington?

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The real-time air quality index in Bellevue, Washington is 27, currently categorized as Good.


Which pollutant is found most often in Bellevue, Washington?

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The most common pollutant in Bellevue, Washington is O3.


What can I do if the air quality in Bellevue, Washington is poor?

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If the air quality in Bellevue, Washington is poor, limit outdoor activities and use a mask to safeguard your health.


What are the current PM2.5 levels in Bellevue, Washington?

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The measured PM2.5 levels in Bellevue, Washington at present are 5.391 μg/m3.


What are the current PM10 levels at Bellevue, Washington?

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The current PM10 levels in Bellevue, Washington are 21.246 μg/m3.


What are the current carbon monoxide (CO) levels at Bellevue, Washington?

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The current carbon monoxide (CO) level in Bellevue, Washington is 0.186 ppm.


What are the current sulfur dioxide (SO2) levels at Bellevue, Washington?

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The current sulfur dioxide (SO2) levels in Bellevue, Washington are 0.457 ppb.


What are the current ozone (O3) levels at Bellevue, Washington?

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The current ozone (O3) levels at Bellevue, Washington is 29.125 ppm.


What are the current nitrogen dioxide (NO2) levels at Bellevue, Washington?

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The current nitrogen dioxide (NO2) levels at Bellevue, Washington is 15.616 ppb.


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