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)
28
Good
Le Mars, Iowa
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
4.39 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
26.63 μg/m³
0
55
155
255
425
605+
29.61 ppb
0
55
71
86
201
201+
7.56 ppb
0
36
76
186
605
1005+
4.91 ppb
0
54
101
361
1250
2050+
0.25 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Le Mars, Iowa
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AQI 30
Good
4.40μg/m³
PM2.5
25.10μg/m³
PM10
32.46ppb
O3
8.31ppb
SO2
6.45ppb
NO2
0.24ppm
CO
AQI 31
Good
4.41μg/m³
PM2.5
26.41μg/m³
PM10
32.81ppb
O3
8.41ppb
SO2
6.47ppb
NO2
0.24ppm
CO
AQI 20
Good
0.12μg/m³
PM2.5
0.34μg/m³
PM10
22.06ppb
O3
7.57ppb
SO2
6.21ppb
NO2
0.25ppm
CO
AQI 31
Good
4.49μg/m³
PM2.5
30.39μg/m³
PM10
34.14ppb
O3
5.04ppb
SO2
3.64ppb
NO2
0.23ppm
CO
AQI 31
Good
3.94μg/m³
PM2.5
22.07μg/m³
PM10
33.66ppb
O3
5.62ppb
SO2
3.88ppb
NO2
0.27ppm
CO
AQI 31
Good
3.29μg/m³
PM2.5
15.46μg/m³
PM10
34.47ppb
O3
6.05ppb
SO2
3.63ppb
NO2
0.27ppm
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 04:00:00 on 2026-03-09.
In the last 24 hours, the best air quality in Le Mars, Iowa was observed at 02:00:00 on 2026-03-09.
As of now, the AQI in Le Mars, Iowa is 28, 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 4.391 μg/m3.
The PM10 concentration in Le Mars, Iowa is 26.632 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Le Mars, Iowa is 0.253 ppm.
Currently, Le Mars, Iowa has a sulfur dioxide (SO2) concentration of 7.557 ppb.
The current ozone (O3) level in Le Mars, Iowa at the moment is 29.611 ppm.
Nitrogen dioxide (NO2) level in Le Mars, Iowa at the moment is 4.909 ppb.
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