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)
54
Moderate
Le Mars, Iowa
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
10.56 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
59.60 μg/m³
0
55
155
255
425
605+
52.13 ppb
0
55
71
86
201
201+
1.18 ppb
0
36
76
186
605
1005+
8.80 ppb
0
54
101
361
1250
2050+
0.23 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
High
Le Mars, Iowa
Le Mars, Iowa
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AQI 52
Moderate
10.37μg/m³
PM2.5
47.38μg/m³
PM10
49.58ppb
O3
0.78ppb
SO2
8.81ppb
NO2
0.21ppm
CO
AQI 52
Moderate
10.44μg/m³
PM2.5
47.03μg/m³
PM10
49.40ppb
O3
0.77ppb
SO2
8.83ppb
NO2
0.21ppm
CO
AQI 49
Good
9.11μg/m³
PM2.5
41.03μg/m³
PM10
35.06ppb
O3
0.88ppb
SO2
8.63ppb
NO2
0.22ppm
CO
AQI 49
Good
9.45μg/m³
PM2.5
41.46μg/m³
PM10
49.34ppb
O3
0.75ppb
SO2
6.56ppb
NO2
0.21ppm
CO
AQI 54
Moderate
11.11μg/m³
PM2.5
51.21μg/m³
PM10
47.10ppb
O3
0.89ppb
SO2
7.49ppb
NO2
0.25ppm
CO
AQI 54
Moderate
10.64μg/m³
PM2.5
47.37μg/m³
PM10
39.91ppb
O3
1.09ppb
SO2
7.38ppb
NO2
0.24ppm
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 2026-10-22.
In the last 24 hours, the best air quality in Le Mars, Iowa was observed at 12:00:00 on 2026-10-22.
As of now, the AQI in Le Mars, Iowa is 54, indicating Moderate conditions.
Le Mars, Iowa air has the highest levels of PM2.5.
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 10.561 μg/m3.
The PM10 concentration in Le Mars, Iowa is 59.6 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Le Mars, Iowa is 0.235 ppm.
Currently, Le Mars, Iowa has a sulfur dioxide (SO2) concentration of 1.182 ppb.
The current ozone (O3) level in Le Mars, Iowa at the moment is 52.135 ppm.
Nitrogen dioxide (NO2) level in Le Mars, Iowa at the moment is 8.804 ppb.
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