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)
27
Good
Algonquin, Illinois
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
5.22 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
22.44 μg/m³
0
55
155
255
425
605+
23.57 ppb
0
55
71
86
201
201+
0.85 ppb
0
36
76
186
605
1005+
14.31 ppb
0
54
101
361
1250
2050+
0.22 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Algonquin, Illinois
Algonquin, Illinois
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AQI 27
Good
5.23μg/m³
PM2.5
22.84μg/m³
PM10
23.69ppb
O3
1.38ppb
SO2
12.35ppb
NO2
0.24ppm
CO
AQI 27
Good
5.32μg/m³
PM2.5
23.08μg/m³
PM10
24.04ppb
O3
1.41ppb
SO2
12.26ppb
NO2
0.23ppm
CO
AQI 27
Good
5.00μg/m³
PM2.5
22.00μg/m³
PM10
23.75ppb
O3
1.32ppb
SO2
12.40ppb
NO2
0.24ppm
CO
AQI 27
Good
5.10μg/m³
PM2.5
22.41μg/m³
PM10
23.66ppb
O3
1.35ppb
SO2
12.39ppb
NO2
0.24ppm
CO
AQI 33
Good
5.75μg/m³
PM2.5
22.55μg/m³
PM10
23.74ppb
O3
1.32ppb
SO2
13.03ppb
NO2
0.23ppm
CO
AQI 33
Good
5.78μg/m³
PM2.5
23.80μg/m³
PM10
23.78ppb
O3
1.47ppb
SO2
9.81ppb
NO2
0.24ppm
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 09:00:00, 2026-01-24.
The best air quality in Algonquin, Illinois was observed at 02:00:00 on 2026-01-25.
The air quality in Algonquin, Illinois right now is Good, with an AQI of 27.
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 5.216 μg/m3.
Algonquin, Illinois currently has a PM10 concentration of 22.785 μg/m3.
The current carbon monoxide (CO) level in Algonquin, Illinois is 0.236 ppm.
The current sulfur dioxide (SO2) concentration in Algonquin, Illinois is 1.379 ppb.
Algonquin, Illinois currently has an ozone (O3) concentration of 23.768 ppm.
The current level of nitrogen dioxide (NO2) in Algonquin, Illinois is 12.339 ppb.
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