Stay updated with real-time air quality in La Grande, 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)
27
Good
La Grande, Oregon
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
2.50 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
10.02 μg/m³
0
55
155
255
425
605+
29.04 ppb
0
55
71
86
201
201+
1.76 ppb
0
36
76
186
605
1005+
4.09 ppb
0
54
101
361
1250
2050+
0.28 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
La Grande, Oregon
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AQI 26
Good
2.90μg/m³
PM2.5
12.01μg/m³
PM10
28.35ppb
O3
2.05ppb
SO2
4.11ppb
NO2
0.28ppm
CO
AQI 23
Good
4.29μg/m³
PM2.5
18.97μg/m³
PM10
25.25ppb
O3
0.15ppb
SO2
5.60ppb
NO2
0.28ppm
CO
AQI 27
Good
5.29μg/m³
PM2.5
22.94μg/m³
PM10
21.43ppb
O3
1.50ppb
SO2
5.61ppb
NO2
0.28ppm
CO
AQI 38
Good
7.12μg/m³
PM2.5
31.66μg/m³
PM10
24.70ppb
O3
0.14ppb
SO2
5.62ppb
NO2
0.28ppm
CO
AQI 19
Good
0.85μg/m³
PM2.5
3.81μg/m³
PM10
19.83ppb
O3
0.15ppb
SO2
5.66ppb
NO2
0.28ppm
CO
AQI 19
Good
0.85μg/m³
PM2.5
3.81μg/m³
PM10
19.81ppb
O3
0.15ppb
SO2
5.67ppb
NO2
0.28ppm
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 La Grande, Oregon is updated on an hourly basis.
The worst air quality in La Grande, Oregon was recorded at 10:00:00 on 2026-03-13.
The best air quality in La Grande, Oregon was recorded at 05:00:00 on 2026-03-14.
The real-time air quality index in La Grande, Oregon is 27, currently categorized as Good.
The most common pollutant in La Grande, Oregon is O3.
If the air quality in La Grande, Oregon is poor, limit outdoor activities and use a mask to safeguard your health.
The measured PM2.5 levels in La Grande, Oregon at present are 2.504 μg/m3.
The current PM10 levels in La Grande, Oregon are 10.019 μg/m3.
The current carbon monoxide (CO) level in La Grande, Oregon is 0.279 ppm.
The current sulfur dioxide (SO2) levels in La Grande, Oregon are 1.764 ppb.
The current ozone (O3) levels at La Grande, Oregon is 29.042 ppm.
The current nitrogen dioxide (NO2) levels at La Grande, Oregon is 4.091 ppb.
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