Stay updated with real-time air quality in Lewiston, Idaho 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)
35
Good
Lewiston, Idaho
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
2.91 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
11.67 μg/m³
0
55
155
255
425
605+
38.16 ppb
0
55
71
86
201
201+
4.01 ppb
0
36
76
186
605
1005+
6.70 ppb
0
54
101
361
1250
2050+
0.58 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Lewiston, Idaho
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AQI 34
Good
3.20μg/m³
PM2.5
14.43μg/m³
PM10
36.94ppb
O3
3.94ppb
SO2
6.72ppb
NO2
0.59ppm
CO
AQI 34
Good
1.90μg/m³
PM2.5
8.01μg/m³
PM10
36.79ppb
O3
3.88ppb
SO2
6.66ppb
NO2
0.59ppm
CO
AQI 32
Good
2.30μg/m³
PM2.5
10.00μg/m³
PM10
35.49ppb
O3
1.91ppb
SO2
6.37ppb
NO2
0.61ppm
CO
AQI 33
Good
2.25μg/m³
PM2.5
11.00μg/m³
PM10
35.79ppb
O3
2.39ppb
SO2
6.54ppb
NO2
0.58ppm
CO
AQI 33
Good
0.81μg/m³
PM2.5
3.29μg/m³
PM10
36.09ppb
O3
2.46ppb
SO2
6.65ppb
NO2
0.63ppm
CO
AQI 34
Good
3.49μg/m³
PM2.5
15.49μg/m³
PM10
37.23ppb
O3
2.48ppb
SO2
6.73ppb
NO2
0.62ppm
CO
Air quality measurements for Idaho, 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 Lewiston, Idaho is updated on an hourly basis.
The worst air quality in Lewiston, Idaho was recorded at 08:00:00 on 2026-03-08.
The best air quality in Lewiston, Idaho was recorded at 11:00:00 on 2026-03-09.
The real-time air quality index in Lewiston, Idaho is 35, currently categorized as Good.
The most common pollutant in Lewiston, Idaho is O3.
If the air quality in Lewiston, Idaho is poor, limit outdoor activities and use a mask to safeguard your health.
The measured PM2.5 levels in Lewiston, Idaho at present are 2.911 μg/m3.
The current PM10 levels in Lewiston, Idaho are 11.672 μg/m3.
The current carbon monoxide (CO) level in Lewiston, Idaho is 0.58 ppm.
The current sulfur dioxide (SO2) levels in Lewiston, Idaho are 4.011 ppb.
The current ozone (O3) levels at Lewiston, Idaho is 38.155 ppm.
The current nitrogen dioxide (NO2) levels at Lewiston, Idaho is 6.704 ppb.
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