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)
134
Unhealthy for sensitive groups
Sycamore, Illinois
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
49.37 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
174.50 μg/m³
0
55
155
255
425
605+
38.86 ppb
0
55
71
86
201
201+
0.82 ppb
0
36
76
186
605
1005+
5.46 ppb
0
54
101
361
1250
2050+
0.32 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
High
Sycamore, Illinois
Sycamore, Illinois
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AQI 137
Unhealthy for sensitive groups
49.58μg/m³
PM2.5
203.04μg/m³
PM10
44.15ppb
O3
0.82ppb
SO2
5.44ppb
NO2
0.32ppm
CO
AQI 134
Unhealthy for sensitive groups
49.34μg/m³
PM2.5
175.45μg/m³
PM10
36.08ppb
O3
0.97ppb
SO2
5.37ppb
NO2
0.32ppm
CO
AQI 134
Unhealthy for sensitive groups
49.17μg/m³
PM2.5
213.02μg/m³
PM10
40.03ppb
O3
0.86ppb
SO2
5.48ppb
NO2
0.32ppm
CO
AQI 134
Unhealthy for sensitive groups
49.00μg/m³
PM2.5
214.02μg/m³
PM10
35.64ppb
O3
0.83ppb
SO2
5.58ppb
NO2
0.32ppm
CO
AQI 134
Unhealthy for sensitive groups
49.38μg/m³
PM2.5
175.64μg/m³
PM10
37.20ppb
O3
0.99ppb
SO2
5.33ppb
NO2
0.32ppm
CO
AQI 137
Unhealthy for sensitive groups
49.74μg/m³
PM2.5
191.05μg/m³
PM10
39.49ppb
O3
0.98ppb
SO2
5.35ppb
NO2
0.32ppm
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 05:00:00, 2025-06-05.
The best air quality in Sycamore, Illinois was observed at 01:00:00 on 2025-06-05.
The air quality in Sycamore, Illinois right now is Unhealthy for Sensitive Groups, with an AQI of 134.
In Sycamore, Illinois, PM2.5 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 49.372 μg/m3.
Sycamore, Illinois currently has a PM10 concentration of 174.504 μg/m3.
The current carbon monoxide (CO) level in Sycamore, Illinois is 0.316 ppm.
The current sulfur dioxide (SO2) concentration in Sycamore, Illinois is 0.819 ppb.
Sycamore, Illinois currently has an ozone (O3) concentration of 38.857 ppm.
The current level of nitrogen dioxide (NO2) in Sycamore, Illinois is 5.464 ppb.
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