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)
28
Good
South Sioux City, Nebraska
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
3.34 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
12.92 μg/m³
0
55
155
255
425
605+
30.39 ppb
0
55
71
86
201
201+
0.76 ppb
0
36
76
186
605
1005+
4.03 ppb
0
54
101
361
1250
2050+
0.24 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Moderate
South Sioux City, Nebraska
South Sioux City, Nebraska
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AQI 29
Good
3.33μg/m³
PM2.5
13.57μg/m³
PM10
30.99ppb
O3
0.76ppb
SO2
4.03ppb
NO2
0.24ppm
CO
AQI 26
Good
3.17μg/m³
PM2.5
15.17μg/m³
PM10
27.99ppb
O3
0.78ppb
SO2
3.52ppb
NO2
0.27ppm
CO
AQI 24
Good
3.07μg/m³
PM2.5
16.98μg/m³
PM10
26.01ppb
O3
0.83ppb
SO2
3.39ppb
NO2
0.27ppm
CO
AQI 21
Good
3.22μg/m³
PM2.5
20.66μg/m³
PM10
23.18ppb
O3
0.85ppb
SO2
3.63ppb
NO2
0.28ppm
CO
AQI 33
Good
6.22μg/m³
PM2.5
27.97μg/m³
PM10
32.48ppb
O3
0.44ppb
SO2
3.17ppb
NO2
0.15ppm
CO
AQI 25
Good
4.26μg/m³
PM2.5
15.69μg/m³
PM10
27.11ppb
O3
0.57ppb
SO2
3.43ppb
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 02:00:00 on 2026-09-06.
The best air quality in South Sioux City, Nebraska was recorded at 09:00:00 on 2026-09-07.
The real-time air quality index in South Sioux City, Nebraska is 28, currently categorized as Good.
The most common pollutant in South Sioux City, Nebraska is O3.
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 3.342 μg/m3.
The current PM10 levels in South Sioux City, Nebraska are 12.923 μg/m3.
The current carbon monoxide (CO) level in South Sioux City, Nebraska is 0.238 ppm.
The current sulfur dioxide (SO2) levels in South Sioux City, Nebraska are 0.759 ppb.
The current ozone (O3) levels at South Sioux City, Nebraska is 30.385 ppm.
The current nitrogen dioxide (NO2) levels at South Sioux City, Nebraska is 4.032 ppb.
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