Stay updated with real-time air quality in Troy, 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)
22
Good
Troy, Illinois
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
2.67 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
16.52 μg/m³
0
55
155
255
425
605+
24.40 ppb
0
55
71
86
201
201+
0.50 ppb
0
36
76
186
605
1005+
3.63 ppb
0
54
101
361
1250
2050+
0.16 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Troy, Illinois
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AQI 22
Good
2.72μg/m³
PM2.5
16.54μg/m³
PM10
24.20ppb
O3
0.50ppb
SO2
3.61ppb
NO2
0.16ppm
CO
AQI 22
Good
2.68μg/m³
PM2.5
17.39μg/m³
PM10
24.28ppb
O3
0.48ppb
SO2
3.56ppb
NO2
0.16ppm
CO
AQI 22
Good
2.80μg/m³
PM2.5
16.31μg/m³
PM10
23.90ppb
O3
0.50ppb
SO2
3.58ppb
NO2
0.16ppm
CO
AQI 21
Good
2.46μg/m³
PM2.5
14.84μg/m³
PM10
22.99ppb
O3
0.55ppb
SO2
3.69ppb
NO2
0.15ppm
CO
AQI 21
Good
2.63μg/m³
PM2.5
13.59μg/m³
PM10
23.13ppb
O3
0.48ppb
SO2
3.67ppb
NO2
0.16ppm
CO
AQI 21
Good
2.46μg/m³
PM2.5
14.84μg/m³
PM10
22.99ppb
O3
0.55ppb
SO2
3.69ppb
NO2
0.15ppm
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 Troy, Illinois are available every hour.
Troy, Illinois experienced its worst air quality at 11:00:00, 2025-10-21.
The best air quality in Troy, Illinois was observed at 10:00:00 on 2025-10-22.
The air quality in Troy, Illinois right now is Good, with an AQI of 22.
In Troy, Illinois, O3 is the most frequently found pollutant.
When air quality in Troy, Illinois is compromised, staying indoors and wearing a mask can reduce health risks.
Troy, Illinois currently has a PM2.5 concentration of 2.672 μg/m3.
Troy, Illinois currently has a PM10 concentration of 16.525 μg/m3.
The current carbon monoxide (CO) level in Troy, Illinois is 0.157 ppm.
The current sulfur dioxide (SO2) concentration in Troy, Illinois is 0.504 ppb.
Troy, Illinois currently has an ozone (O3) concentration of 24.398 ppm.
The current level of nitrogen dioxide (NO2) in Troy, Illinois is 3.628 ppb.
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