Stay updated with real-time air quality in South Sioux City, Nebraska 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)
44
Good
South Sioux City, Nebraska
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
6.28 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
47.40 μg/m³
0
55
155
255
425
605+
36.70 ppb
0
55
71
86
201
201+
0.86 ppb
0
36
76
186
605
1005+
6.62 ppb
0
54
101
361
1250
2050+
0.29 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
South Sioux City, Nebraska
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AQI 33
Good
5.84μg/m³
PM2.5
29.33μg/m³
PM10
35.18ppb
O3
5.86ppb
SO2
6.93ppb
NO2
0.29ppm
CO
AQI 30
Good
5.29μg/m³
PM2.5
27.12μg/m³
PM10
31.87ppb
O3
5.34ppb
SO2
6.42ppb
NO2
0.30ppm
CO
AQI 26
Good
0.13μg/m³
PM2.5
0.37μg/m³
PM10
28.04ppb
O3
5.26ppb
SO2
4.91ppb
NO2
0.29ppm
CO
AQI 27
Good
2.94μg/m³
PM2.5
9.79μg/m³
PM10
29.34ppb
O3
4.87ppb
SO2
4.86ppb
NO2
0.30ppm
CO
AQI 31
Good
2.40μg/m³
PM2.5
10.00μg/m³
PM10
34.44ppb
O3
0.24ppb
SO2
0.73ppb
NO2
0.13ppm
CO
AQI 35
Good
4.17μg/m³
PM2.5
37.78μg/m³
PM10
35.59ppb
O3
3.57ppb
SO2
4.35ppb
NO2
0.26ppm
CO
Air quality measurements for Nebraska, USA meet strict US EPA standards. These measurements are collected from reliable sources, including satellites and ground-based monitoring systems. Advanced algorithms and machine learning techniques are applied to the data, factoring in variables such as traffic and population density, to ensure precision and reliability.
Source: Ambee Data Sources
Air quality data for South Sioux City, Nebraska is updated on an hourly basis.
The worst air quality in South Sioux City, Nebraska was recorded at 04:00:00 on 2026-03-09.
The best air quality in South Sioux City, Nebraska was recorded at 03:00:00 on 2026-03-09.
The real-time air quality index in South Sioux City, Nebraska is 44, currently categorized as Good.
The most common pollutant in South Sioux City, Nebraska is PM10.
If the air quality in South Sioux City, Nebraska is poor, limit outdoor activities and use a mask to safeguard your health.
The measured PM2.5 levels in South Sioux City, Nebraska at present are 6.275 μg/m3.
The current PM10 levels in South Sioux City, Nebraska are 47.4 μg/m3.
The current carbon monoxide (CO) level in South Sioux City, Nebraska is 0.289 ppm.
The current sulfur dioxide (SO2) levels in South Sioux City, Nebraska are 0.857 ppb.
The current ozone (O3) levels at South Sioux City, Nebraska is 36.702 ppm.
The current nitrogen dioxide (NO2) levels at South Sioux City, Nebraska is 6.617 ppb.
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