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
Ontario, Oregon
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
4.10 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
18.00 μg/m³
0
55
155
255
425
605+
19.89 ppb
0
55
71
86
201
201+
1.66 ppb
0
36
76
186
605
1005+
3.12 ppb
0
54
101
361
1250
2050+
0.12 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Ontario, Oregon
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AQI 34
Good
6.29μg/m³
PM2.5
18.78μg/m³
PM10
37.22ppb
O3
0.76ppb
SO2
0.53ppb
NO2
0.16ppm
CO
AQI 34
Good
6.17μg/m³
PM2.5
20.71μg/m³
PM10
36.92ppb
O3
0.78ppb
SO2
0.54ppb
NO2
0.17ppm
CO
AQI 38
Good
7.11μg/m³
PM2.5
16.87μg/m³
PM10
36.56ppb
O3
0.66ppb
SO2
0.47ppb
NO2
0.14ppm
CO
AQI 38
Good
6.66μg/m³
PM2.5
16.29μg/m³
PM10
37.00ppb
O3
0.66ppb
SO2
0.47ppb
NO2
0.14ppm
CO
AQI 38
Good
7.43μg/m³
PM2.5
17.15μg/m³
PM10
35.17ppb
O3
0.63ppb
SO2
0.43ppb
NO2
0.12ppm
CO
AQI 44
Good
7.72μg/m³
PM2.5
14.91μg/m³
PM10
34.46ppb
O3
0.61ppb
SO2
0.41ppb
NO2
0.11ppm
CO
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.
Source: Ambee Data Sources
Air quality data for Ontario, Oregon is updated on an hourly basis.
The worst air quality in Ontario, Oregon was recorded at 02:00:00 on 2025-07-20.
The best air quality in Ontario, Oregon was recorded at 08:00:00 on 2025-07-20.
The real-time air quality index in Ontario, Oregon is 33, currently categorized as Good.
The most common pollutant in Ontario, Oregon is O3.
If the air quality in Ontario, Oregon is poor, limit outdoor activities and use a mask to safeguard your health.
The measured PM2.5 levels in Ontario, Oregon at present are 5.301 μg/m3.
The current PM10 levels in Ontario, Oregon are 22.995 μg/m3.
The current carbon monoxide (CO) level in Ontario, Oregon is 0.125 ppm.
The current sulfur dioxide (SO2) levels in Ontario, Oregon are 1.567 ppb.
The current ozone (O3) levels at Ontario, Oregon is 36.493 ppm.
The current nitrogen dioxide (NO2) levels at Ontario, Oregon is 1.013 ppb.
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