Stay updated with real-time air quality in Le Mars, Iowa 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)
26
Good
Le Mars, Iowa
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
3.17 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
15.17 μg/m³
0
55
155
255
425
605+
27.99 ppb
0
55
71
86
201
201+
0.78 ppb
0
36
76
186
605
1005+
3.52 ppb
0
54
101
361
1250
2050+
0.27 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Moderate
Le Mars, Iowa
Le Mars, Iowa
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AQI 29
Good
3.33μg/m³
PM2.5
13.57μg/m³
PM10
30.99ppb
O3
0.76ppb
SO2
4.03ppb
NO2
0.24ppm
CO
AQI 28
Good
3.34μg/m³
PM2.5
12.92μg/m³
PM10
30.39ppb
O3
0.76ppb
SO2
4.03ppb
NO2
0.24ppm
CO
AQI 24
Good
3.07μg/m³
PM2.5
16.98μg/m³
PM10
26.01ppb
O3
0.83ppb
SO2
3.39ppb
NO2
0.27ppm
CO
AQI 25
Good
4.26μg/m³
PM2.5
15.69μg/m³
PM10
27.11ppb
O3
0.57ppb
SO2
3.43ppb
NO2
0.26ppm
CO
AQI 22
Good
3.62μg/m³
PM2.5
16.48μg/m³
PM10
20.95ppb
O3
0.68ppb
SO2
3.33ppb
NO2
0.34ppm
CO
AQI 20
Good
1.62μg/m³
PM2.5
6.38μg/m³
PM10
22.07ppb
O3
0.79ppb
SO2
2.74ppb
NO2
0.32ppm
CO
Air quality and pollutant data for Iowa, USA are sourced from ground-based monitors and satellites, adhering to US EPA standards. Machine learning and advanced algorithms enhance the data by incorporating local variables like traffic and population density, ensuring high accuracy and dependability.
Source: Ambee Data Sources
The air quality information for Le Mars, Iowa is updated every hour for accuracy.
In the past 24 hours, the air quality in Le Mars, Iowa was at its worst at 06:00:00 on 2026-09-06.
In the last 24 hours, the best air quality in Le Mars, Iowa was observed at 09:00:00 on 2026-09-07.
As of now, the AQI in Le Mars, Iowa is 26, indicating Good conditions.
Le Mars, Iowa air has the highest levels of O3.
Poor air quality in Le Mars, Iowa means it's advisable to stay indoors and wear a mask for your protection.
PM2.5 levels in Le Mars, Iowa are currently 3.174 μg/m3.
The PM10 concentration in Le Mars, Iowa is 15.168 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Le Mars, Iowa is 0.268 ppm.
Currently, Le Mars, Iowa has a sulfur dioxide (SO2) concentration of 0.782 ppb.
The current ozone (O3) level in Le Mars, Iowa at the moment is 27.993 ppm.
Nitrogen dioxide (NO2) level in Le Mars, Iowa at the moment is 3.524 ppb.
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