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)
44
Good
Algonquin, Illinois
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
3.96 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
17.44 μg/m³
0
55
155
255
425
605+
47.49 ppb
0
55
71
86
201
201+
0.41 ppb
0
36
76
186
605
1005+
2.49 ppb
0
54
101
361
1250
2050+
0.20 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Moderate
Algonquin, Illinois
Algonquin, Illinois
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AQI 40
Good
3.39μg/m³
PM2.5
15.33μg/m³
PM10
43.44ppb
O3
0.43ppb
SO2
3.27ppb
NO2
0.20ppm
CO
AQI 39
Good
3.61μg/m³
PM2.5
16.34μg/m³
PM10
42.23ppb
O3
0.44ppb
SO2
3.23ppb
NO2
0.20ppm
CO
AQI 42
Good
3.10μg/m³
PM2.5
14.00μg/m³
PM10
45.00ppb
O3
0.42ppb
SO2
3.33ppb
NO2
0.20ppm
CO
AQI 42
Good
3.19μg/m³
PM2.5
14.50μg/m³
PM10
44.56ppb
O3
0.42ppb
SO2
3.32ppb
NO2
0.20ppm
CO
AQI 39
Good
3.35μg/m³
PM2.5
14.53μg/m³
PM10
41.66ppb
O3
0.41ppb
SO2
3.21ppb
NO2
0.20ppm
CO
AQI 39
Good
3.41μg/m³
PM2.5
14.67μg/m³
PM10
42.27ppb
O3
0.43ppb
SO2
3.35ppb
NO2
0.20ppm
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 10:00:00, 2026-06-12.
The best air quality in Algonquin, Illinois was observed at 11:00:00 on 2026-06-13.
The air quality in Algonquin, Illinois right now is Good, with an AQI of 44.
In Algonquin, Illinois, O3 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 3.958 μg/m3.
Algonquin, Illinois currently has a PM10 concentration of 17.441 μg/m3.
The current carbon monoxide (CO) level in Algonquin, Illinois is 0.199 ppm.
The current sulfur dioxide (SO2) concentration in Algonquin, Illinois is 0.405 ppb.
Algonquin, Illinois currently has an ozone (O3) concentration of 47.494 ppm.
The current level of nitrogen dioxide (NO2) in Algonquin, Illinois is 2.49 ppb.
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