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)
19
Good
Algonquin, Illinois
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
3.34 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
15.06 μg/m³
0
55
155
255
425
605+
21.35 ppb
0
55
71
86
201
201+
0.32 ppb
0
36
76
186
605
1005+
7.92 ppb
0
54
101
361
1250
2050+
0.20 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Algonquin, Illinois
Algonquin, Illinois
Scroll To Air Quality MapLoading...
AQI 25
Good
3.05μg/m³
PM2.5
12.98μg/m³
PM10
26.88ppb
O3
0.47ppb
SO2
10.21ppb
NO2
0.20ppm
CO
AQI 24
Good
3.23μg/m³
PM2.5
13.96μg/m³
PM10
25.90ppb
O3
0.47ppb
SO2
10.46ppb
NO2
0.20ppm
CO
AQI 26
Good
2.90μg/m³
PM2.5
12.00μg/m³
PM10
28.00ppb
O3
0.47ppb
SO2
9.84ppb
NO2
0.20ppm
CO
AQI 25
Good
2.96μg/m³
PM2.5
12.31μg/m³
PM10
27.49ppb
O3
0.47ppb
SO2
9.95ppb
NO2
0.20ppm
CO
AQI 20
Good
2.32μg/m³
PM2.5
7.16μg/m³
PM10
21.63ppb
O3
0.45ppb
SO2
11.26ppb
NO2
0.20ppm
CO
AQI 22
Good
2.66μg/m³
PM2.5
11.31μg/m³
PM10
23.98ppb
O3
0.48ppb
SO2
11.28ppb
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 01:00:00, 2026-06-15.
The best air quality in Algonquin, Illinois was observed at 05:00:00 on 2026-06-15.
The air quality in Algonquin, Illinois right now is Good, with an AQI of 19.
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 3.336 μg/m3.
Algonquin, Illinois currently has a PM10 concentration of 15.062 μg/m3.
The current carbon monoxide (CO) level in Algonquin, Illinois is 0.202 ppm.
The current sulfur dioxide (SO2) concentration in Algonquin, Illinois is 0.321 ppb.
Algonquin, Illinois currently has an ozone (O3) concentration of 21.346 ppm.
The current level of nitrogen dioxide (NO2) in Algonquin, Illinois is 7.917 ppb.
All Rights Reserved © Ambee Inc. 2025