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)
25
Good
Le Mars, Iowa
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
3.96 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
10.94 μg/m³
0
55
155
255
425
605+
26.88 ppb
0
55
71
86
201
201+
0.93 ppb
0
36
76
186
605
1005+
3.17 ppb
0
54
101
361
1250
2050+
0.18 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Le Mars, Iowa
Le Mars, Iowa
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AQI 27
Good
4.88μg/m³
PM2.5
15.38μg/m³
PM10
21.77ppb
O3
0.92ppb
SO2
3.58ppb
NO2
0.16ppm
CO
AQI 27
Good
4.90μg/m³
PM2.5
14.88μg/m³
PM10
22.27ppb
O3
0.91ppb
SO2
3.58ppb
NO2
0.16ppm
CO
AQI 27
Good
4.64μg/m³
PM2.5
18.34μg/m³
PM10
19.03ppb
O3
0.95ppb
SO2
2.88ppb
NO2
0.18ppm
CO
AQI 33
Good
6.07μg/m³
PM2.5
22.27μg/m³
PM10
25.81ppb
O3
0.46ppb
SO2
3.03ppb
NO2
0.17ppm
CO
AQI 38
Good
6.70μg/m³
PM2.5
25.16μg/m³
PM10
26.88ppb
O3
0.63ppb
SO2
2.68ppb
NO2
0.21ppm
CO
AQI 25
Good
1.95μg/m³
PM2.5
7.13μg/m³
PM10
27.42ppb
O3
1.01ppb
SO2
2.77ppb
NO2
0.20ppm
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 08:00:00 on 2026-06-07.
In the last 24 hours, the best air quality in Le Mars, Iowa was observed at 03:00:00 on 2026-06-07.
As of now, the AQI in Le Mars, Iowa is 25, 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 3.962 μg/m3.
The PM10 concentration in Le Mars, Iowa is 10.935 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Le Mars, Iowa is 0.178 ppm.
Currently, Le Mars, Iowa has a sulfur dioxide (SO2) concentration of 0.932 ppb.
The current ozone (O3) level in Le Mars, Iowa at the moment is 26.88 ppm.
Nitrogen dioxide (NO2) level in Le Mars, Iowa at the moment is 3.167 ppb.
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