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)
24
Good
Round Lake Beach, Illinois
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
2.44 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
9.93 μg/m³
0
55
155
255
425
605+
25.80 ppb
0
55
71
86
201
201+
0.39 ppb
0
36
76
186
605
1005+
4.05 ppb
0
54
101
361
1250
2050+
0.15 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Round Lake Beach, Illinois
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AQI 24
Good
2.44μg/m³
PM2.5
9.93μg/m³
PM10
25.80ppb
O3
0.39ppb
SO2
4.05ppb
NO2
0.15ppm
CO
AQI 22
Good
2.46μg/m³
PM2.5
8.95μg/m³
PM10
24.49ppb
O3
0.39ppb
SO2
3.90ppb
NO2
0.15ppm
CO
AQI 30
Good
2.47μg/m³
PM2.5
8.82μg/m³
PM10
32.04ppb
O3
0.39ppb
SO2
3.94ppb
NO2
0.15ppm
CO
AQI 24
Good
2.42μg/m³
PM2.5
9.92μg/m³
PM10
25.75ppb
O3
0.38ppb
SO2
4.08ppb
NO2
0.15ppm
CO
AQI 30
Good
2.47μg/m³
PM2.5
8.82μg/m³
PM10
32.04ppb
O3
0.39ppb
SO2
3.94ppb
NO2
0.15ppm
CO
AQI 30
Good
2.50μg/m³
PM2.5
8.99μg/m³
PM10
32.00ppb
O3
0.36ppb
SO2
4.05ppb
NO2
0.15ppm
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 11:00:00 on 2026-03-16.
In the last 24 hours, the best air quality in Round Lake Beach, Illinois was observed at 08:00:00 on 2026-03-17.
As of now, the AQI in Round Lake Beach, Illinois is 24, 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 2.441 μg/m3.
The PM10 concentration in Round Lake Beach, Illinois is 9.933 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Round Lake Beach, Illinois is 0.147 ppm.
Currently, Round Lake Beach, Illinois has a sulfur dioxide (SO2) concentration of 0.389 ppb.
The current ozone (O3) level in Round Lake Beach, Illinois at the moment is 25.798 ppm.
Nitrogen dioxide (NO2) level in Round Lake Beach, Illinois at the moment is 4.052 ppb.
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