Stay updated with real-time air quality in East St. Louis, Illinois 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
East St. Louis, Illinois
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
7.97 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
34.70 μg/m³
0
55
155
255
425
605+
22.06 ppb
0
55
71
86
201
201+
0.35 ppb
0
36
76
186
605
1005+
4.96 ppb
0
54
101
361
1250
2050+
0.13 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
East St. Louis, Illinois
East St. Louis, Illinois
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AQI 38
Good
7.47μg/m³
PM2.5
23.96μg/m³
PM10
24.66ppb
O3
0.31ppb
SO2
5.10ppb
NO2
0.11ppm
CO
AQI 38
Good
7.09μg/m³
PM2.5
27.96μg/m³
PM10
25.37ppb
O3
0.35ppb
SO2
5.12ppb
NO2
0.14ppm
CO
AQI 33
Good
5.84μg/m³
PM2.5
22.72μg/m³
PM10
24.75ppb
O3
0.36ppb
SO2
4.78ppb
NO2
0.13ppm
CO
AQI 44
Good
7.86μg/m³
PM2.5
29.35μg/m³
PM10
26.45ppb
O3
0.32ppb
SO2
5.36ppb
NO2
0.14ppm
CO
AQI 33
Good
6.21μg/m³
PM2.5
22.06μg/m³
PM10
26.12ppb
O3
0.35ppb
SO2
4.56ppb
NO2
0.12ppm
CO
AQI 33
Good
6.41μg/m³
PM2.5
24.98μg/m³
PM10
27.17ppb
O3
0.39ppb
SO2
4.70ppb
NO2
0.14ppm
CO
The air quality data for Illinois, USA is gathered from reliable sources such as satellites and monitoring stations, adhering to US EPA guidelines. With the help of advanced algorithms and machine learning, factors like traffic and population density are analyzed to deliver accurate and dependable results.
Source: Ambee Data Sources
Air quality updates for East St. Louis, Illinois are available every hour.
East St. Louis, Illinois experienced its worst air quality at 05:00:00, 2025-07-14.
The best air quality in East St. Louis, Illinois was observed at 02:00:00 on 2025-07-14.
The air quality in East St. Louis, Illinois right now is Good, with an AQI of 44.
In East St. Louis, Illinois, PM2.5 is the most frequently found pollutant.
When air quality in East St. Louis, Illinois is compromised, staying indoors and wearing a mask can reduce health risks.
East St. Louis, Illinois currently has a PM2.5 concentration of 7.971 μg/m3.
East St. Louis, Illinois currently has a PM10 concentration of 34.696 μg/m3.
The current carbon monoxide (CO) level in East St. Louis, Illinois is 0.128 ppm.
The current sulfur dioxide (SO2) concentration in East St. Louis, Illinois is 0.35 ppb.
East St. Louis, Illinois currently has an ozone (O3) concentration of 22.061 ppm.
The current level of nitrogen dioxide (NO2) in East St. Louis, Illinois is 4.961 ppb.
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