Stay updated with real-time air quality in Sycamore, 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)
37
Good
Sycamore, Illinois
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
5.77 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
16.23 μg/m³
0
55
155
255
425
605+
40.19 ppb
0
55
71
86
201
201+
0.63 ppb
0
36
76
186
605
1005+
2.19 ppb
0
54
101
361
1250
2050+
0.14 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Sycamore, Illinois
Sycamore, Illinois
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AQI 40
Good
7.04μg/m³
PM2.5
17.45μg/m³
PM10
42.84ppb
O3
0.63ppb
SO2
2.16ppb
NO2
0.14ppm
CO
AQI 37
Good
6.17μg/m³
PM2.5
16.10μg/m³
PM10
40.44ppb
O3
0.68ppb
SO2
3.63ppb
NO2
0.14ppm
CO
AQI 36
Good
5.63μg/m³
PM2.5
23.83μg/m³
PM10
38.81ppb
O3
0.65ppb
SO2
2.24ppb
NO2
0.14ppm
CO
AQI 41
Good
5.56μg/m³
PM2.5
23.83μg/m³
PM10
43.99ppb
O3
0.63ppb
SO2
2.28ppb
NO2
0.14ppm
CO
AQI 38
Good
6.05μg/m³
PM2.5
19.45μg/m³
PM10
40.78ppb
O3
0.69ppb
SO2
3.69ppb
NO2
0.14ppm
CO
AQI 38
Good
6.24μg/m³
PM2.5
26.62μg/m³
PM10
40.88ppb
O3
0.69ppb
SO2
3.67ppb
NO2
0.14ppm
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 Sycamore, Illinois are available every hour.
Sycamore, Illinois experienced its worst air quality at 01:00:00, 2026-07-23.
The best air quality in Sycamore, Illinois was observed at 03:00:00 on 2026-07-23.
The air quality in Sycamore, Illinois right now is Good, with an AQI of 37.
In Sycamore, Illinois, O3 is the most frequently found pollutant.
When air quality in Sycamore, Illinois is compromised, staying indoors and wearing a mask can reduce health risks.
Sycamore, Illinois currently has a PM2.5 concentration of 5.773 μg/m3.
Sycamore, Illinois currently has a PM10 concentration of 16.233 μg/m3.
The current carbon monoxide (CO) level in Sycamore, Illinois is 0.142 ppm.
The current sulfur dioxide (SO2) concentration in Sycamore, Illinois is 0.626 ppb.
Sycamore, Illinois currently has an ozone (O3) concentration of 40.191 ppm.
The current level of nitrogen dioxide (NO2) in Sycamore, Illinois is 2.193 ppb.
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