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)
22
Good
South Sioux City, Nebraska
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
3.93 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
8.95 μg/m³
0
55
155
255
425
605+
20.64 ppb
0
55
71
86
201
201+
0.93 ppb
0
36
76
186
605
1005+
5.11 ppb
0
54
101
361
1250
2050+
0.17 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
South Sioux City, Nebraska
South Sioux City, Nebraska
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AQI 22
Good
3.75μg/m³
PM2.5
8.56μg/m³
PM10
20.76ppb
O3
0.94ppb
SO2
5.11ppb
NO2
0.17ppm
CO
AQI 23
Good
3.55μg/m³
PM2.5
8.15μg/m³
PM10
25.43ppb
O3
0.96ppb
SO2
4.21ppb
NO2
0.18ppm
CO
AQI 16
Good
3.33μg/m³
PM2.5
10.13μg/m³
PM10
16.03ppb
O3
0.97ppb
SO2
3.22ppb
NO2
0.18ppm
CO
AQI 24
Good
3.17μg/m³
PM2.5
10.20μg/m³
PM10
26.02ppb
O3
0.99ppb
SO2
3.13ppb
NO2
0.18ppm
CO
AQI 23
Good
3.11μg/m³
PM2.5
13.88μg/m³
PM10
24.55ppb
O3
0.22ppb
SO2
3.12ppb
NO2
0.12ppm
CO
AQI 33
Good
5.53μg/m³
PM2.5
16.12μg/m³
PM10
26.81ppb
O3
0.51ppb
SO2
3.84ppb
NO2
0.18ppm
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 03:00:00 on 2026-06-08.
The best air quality in South Sioux City, Nebraska was recorded at 04:00:00 on 2026-06-07.
The real-time air quality index in South Sioux City, Nebraska is 22, currently categorized as Good.
The most common pollutant in South Sioux City, Nebraska is PM2.5.
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 3.932 μg/m3.
The current PM10 levels in South Sioux City, Nebraska are 8.949 μg/m3.
The current carbon monoxide (CO) level in South Sioux City, Nebraska is 0.165 ppm.
The current sulfur dioxide (SO2) levels in South Sioux City, Nebraska are 0.932 ppb.
The current ozone (O3) levels at South Sioux City, Nebraska is 20.64 ppm.
The current nitrogen dioxide (NO2) levels at South Sioux City, Nebraska is 5.109 ppb.
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