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Real-time air quality index in Ontario, Oregon today

Stay updated with real-time air quality in Ontario, Oregon 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)

22

Good

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Ontario, Oregon

Last updated: ... (Local time)

Common air pollutants in Ontario, Oregon

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter2.5 (PM2.5)

4.10 μg/m³

0

12.1

35.5

55.5

250.5

500.5+

Particulate Matter10 (PM10)

18.00 μg/m³

0

55

155

255

425

605+

Ozone (O3)

19.89 ppb

0

55

71

86

201

201+

Sulfur Dioxide (SO2)

1.66 ppb

0

36

76

186

605

1005+

Nitrogen Dioxide (NO2)

3.12 ppb

0

54

101

361

1250

2050+

Carbon Monoxide (CO)

0.12 ppm

0

4.5

9.5

12.5

230.5

50.5+

Pollen Level

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Track live Ontario, Oregon air quality forecast and history

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Ontario, Oregon air quality map: Real-time AQI near you




How accurate is Oregon, USA air quality data?

Air quality measurements for Oregon, 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 Ontario, Oregon updated?

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Air quality data for Ontario, Oregon is updated on an hourly basis.


When did Ontario, Oregon experience the worst air quality in the last 24 hours?

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The worst air quality in Ontario, Oregon was recorded at 02:00:00 on 2025-07-20.


When did Ontario, Oregon have its best air quality in the last 24 hours?

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The best air quality in Ontario, Oregon was recorded at 08:00:00 on 2025-07-20.


What is the real-time air quality index for Ontario, Oregon?

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The real-time air quality index in Ontario, Oregon is 33, currently categorized as Good.


Which pollutant is found most often in Ontario, Oregon?

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The most common pollutant in Ontario, Oregon is O3.


What can I do if the air quality in Ontario, Oregon is poor?

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


What are the current PM2.5 levels in Ontario, Oregon?

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The measured PM2.5 levels in Ontario, Oregon at present are 5.301 μg/m3.


What are the current PM10 levels at Ontario, Oregon?

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The current PM10 levels in Ontario, Oregon are 22.995 μg/m3.


What are the current carbon monoxide (CO) levels at Ontario, Oregon?

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The current carbon monoxide (CO) level in Ontario, Oregon is 0.125 ppm.


What are the current sulfur dioxide (SO2) levels at Ontario, Oregon?

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The current sulfur dioxide (SO2) levels in Ontario, Oregon are 1.567 ppb.


What are the current ozone (O3) levels at Ontario, Oregon?

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The current ozone (O3) levels at Ontario, Oregon is 36.493 ppm.


What are the current nitrogen dioxide (NO2) levels at Ontario, Oregon?

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The current nitrogen dioxide (NO2) levels at Ontario, Oregon is 1.013 ppb.


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