Stay updated with real-time air quality in Round Lake Beach, 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)
40
Good
Round Lake Beach, Illinois
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
3.41 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
14.15 μg/m³
0
55
155
255
425
605+
42.89 ppb
0
55
71
86
201
201+
0.37 ppb
0
36
76
186
605
1005+
4.52 ppb
0
54
101
361
1250
2050+
0.15 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Round Lake Beach, Illinois
Round Lake Beach, Illinois
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AQI 40
Good
3.41μg/m³
PM2.5
14.15μg/m³
PM10
42.89ppb
O3
0.37ppb
SO2
4.52ppb
NO2
0.15ppm
CO
AQI 47
Good
4.34μg/m³
PM2.5
15.05μg/m³
PM10
51.13ppb
O3
0.37ppb
SO2
4.50ppb
NO2
0.16ppm
CO
AQI 48
Good
4.26μg/m³
PM2.5
14.70μg/m³
PM10
51.64ppb
O3
0.36ppb
SO2
4.46ppb
NO2
0.16ppm
CO
AQI 39
Good
3.13μg/m³
PM2.5
12.28μg/m³
PM10
42.48ppb
O3
0.36ppb
SO2
4.50ppb
NO2
0.15ppm
CO
AQI 48
Good
4.26μg/m³
PM2.5
14.70μg/m³
PM10
51.64ppb
O3
0.36ppb
SO2
4.46ppb
NO2
0.16ppm
CO
AQI 42
Good
3.21μg/m³
PM2.5
12.38μg/m³
PM10
44.98ppb
O3
0.34ppb
SO2
4.46ppb
NO2
0.16ppm
CO
Air quality and pollutant data for Illinois, 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 Round Lake Beach, Illinois is updated every hour for accuracy.
In the past 24 hours, the air quality in Round Lake Beach, Illinois was at its worst at 10:00:00 on 2026-06-11.
In the last 24 hours, the best air quality in Round Lake Beach, Illinois was observed at 01:00:00 on 2026-06-11.
As of now, the AQI in Round Lake Beach, Illinois is 40, indicating Good conditions.
Round Lake Beach, Illinois air has the highest levels of O3.
Poor air quality in Round Lake Beach, Illinois means it's advisable to stay indoors and wear a mask for your protection.
PM2.5 levels in Round Lake Beach, Illinois are currently 3.406 μg/m3.
The PM10 concentration in Round Lake Beach, Illinois is 14.153 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Round Lake Beach, Illinois is 0.155 ppm.
Currently, Round Lake Beach, Illinois has a sulfur dioxide (SO2) concentration of 0.366 ppb.
The current ozone (O3) level in Round Lake Beach, Illinois at the moment is 42.894 ppm.
Nitrogen dioxide (NO2) level in Round Lake Beach, Illinois at the moment is 4.522 ppb.
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