Stay updated with real-time air quality in Algonquin, 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)
49
Good
Algonquin, Illinois
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
9.37 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
41.33 μg/m³
0
55
155
255
425
605+
4.72 ppb
0
55
71
86
201
201+
0.76 ppb
0
36
76
186
605
1005+
14.00 ppb
0
54
101
361
1250
2050+
0.29 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Algonquin, Illinois
Algonquin, Illinois
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AQI 22
Good
3.88μg/m³
PM2.5
17.39μg/m³
PM10
14.71ppb
O3
0.86ppb
SO2
6.28ppb
NO2
0.22ppm
CO
AQI 22
Good
4.37μg/m³
PM2.5
19.39μg/m³
PM10
14.07ppb
O3
0.83ppb
SO2
6.34ppb
NO2
0.22ppm
CO
AQI 16
Good
3.30μg/m³
PM2.5
15.00μg/m³
PM10
16.00ppb
O3
0.91ppb
SO2
6.12ppb
NO2
0.23ppm
CO
AQI 16
Good
3.49μg/m³
PM2.5
15.76μg/m³
PM10
15.53ppb
O3
0.89ppb
SO2
6.19ppb
NO2
0.22ppm
CO
AQI 22
Good
3.73μg/m³
PM2.5
12.99μg/m³
PM10
10.46ppb
O3
0.91ppb
SO2
6.08ppb
NO2
0.22ppm
CO
AQI 22
Good
3.69μg/m³
PM2.5
10.54μg/m³
PM10
10.02ppb
O3
0.78ppb
SO2
6.36ppb
NO2
0.23ppm
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 Algonquin, Illinois are available every hour.
Algonquin, Illinois experienced its worst air quality at 02:00:00, 2025-10-23.
The best air quality in Algonquin, Illinois was observed at 12:00:00 on 2025-10-23.
The air quality in Algonquin, Illinois right now is Good, with an AQI of 16.
In Algonquin, Illinois, PM2.5 is the most frequently found pollutant.
When air quality in Algonquin, Illinois is compromised, staying indoors and wearing a mask can reduce health risks.
Algonquin, Illinois currently has a PM2.5 concentration of 3.483 μg/m3.
Algonquin, Illinois currently has a PM10 concentration of 14.853 μg/m3.
The current carbon monoxide (CO) level in Algonquin, Illinois is 0.256 ppm.
The current sulfur dioxide (SO2) concentration in Algonquin, Illinois is 1.517 ppb.
Algonquin, Illinois currently has an ozone (O3) concentration of 15.585 ppm.
The current level of nitrogen dioxide (NO2) in Algonquin, Illinois is 5.501 ppb.
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