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)
16
Good
Le Mars, Iowa
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
1.34 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
4.85 μg/m³
0
55
155
255
425
605+
16.91 ppb
0
55
71
86
201
201+
0.28 ppb
0
36
76
186
605
1005+
1.02 ppb
0
54
101
361
1250
2050+
0.14 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
5.38μg/m³
PM2.5
13.76μg/m³
PM10
13.95ppb
O3
0.54ppb
SO2
1.85ppb
NO2
0.17ppm
CO
AQI 27
Good
5.31μg/m³
PM2.5
13.77μg/m³
PM10
13.09ppb
O3
0.54ppb
SO2
1.85ppb
NO2
0.17ppm
CO
AQI 49
Good
9.48μg/m³
PM2.5
42.90μg/m³
PM10
28.28ppb
O3
0.56ppb
SO2
1.86ppb
NO2
0.17ppm
CO
AQI 23
Good
3.80μg/m³
PM2.5
22.78μg/m³
PM10
25.21ppb
O3
0.38ppb
SO2
1.77ppb
NO2
0.16ppm
CO
AQI 27
Good
4.78μg/m³
PM2.5
25.91μg/m³
PM10
14.13ppb
O3
0.43ppb
SO2
2.14ppb
NO2
0.18ppm
CO
AQI 38
Good
6.57μg/m³
PM2.5
14.96μg/m³
PM10
11.05ppb
O3
0.58ppb
SO2
2.09ppb
NO2
0.17ppm
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 2026-01-22.
In the last 24 hours, the best air quality in Le Mars, Iowa was observed at 04:00:00 on 2026-01-23.
As of now, the AQI in Le Mars, Iowa is 16, 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 1.343 μg/m3.
The PM10 concentration in Le Mars, Iowa is 4.846 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Le Mars, Iowa is 0.14 ppm.
Currently, Le Mars, Iowa has a sulfur dioxide (SO2) concentration of 0.275 ppb.
The current ozone (O3) level in Le Mars, Iowa at the moment is 16.912 ppm.
Nitrogen dioxide (NO2) level in Le Mars, Iowa at the moment is 1.02 ppb.
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