Stay updated with real-time air quality in Quincy, 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)
97
Moderate
Quincy, Illinois
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
34.21 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
50.86 μg/m³
0
55
155
255
425
605+
22.74 ppb
0
55
71
86
201
201+
0.47 ppb
0
36
76
186
605
1005+
6.90 ppb
0
54
101
361
1250
2050+
0.39 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
High
Quincy, Illinois
Quincy, Illinois
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AQI 88
Moderate
28.78μg/m³
PM2.5
111.22μg/m³
PM10
22.73ppb
O3
0.51ppb
SO2
7.18ppb
NO2
0.39ppm
CO
AQI 115
Unhealthy for sensitive groups
41.45μg/m³
PM2.5
184.16μg/m³
PM10
23.60ppb
O3
0.44ppb
SO2
5.29ppb
NO2
0.23ppm
CO
AQI 96
Moderate
32.73μg/m³
PM2.5
141.05μg/m³
PM10
22.18ppb
O3
0.69ppb
SO2
5.29ppb
NO2
0.23ppm
CO
AQI 81
Moderate
14.35μg/m³
PM2.5
115.43μg/m³
PM10
14.11ppb
O3
0.59ppb
SO2
7.17ppb
NO2
0.39ppm
CO
AQI 112
Unhealthy for sensitive groups
40.18μg/m³
PM2.5
178.45μg/m³
PM10
21.13ppb
O3
0.47ppb
SO2
5.29ppb
NO2
0.23ppm
CO
AQI 92
Moderate
28.32μg/m³
PM2.5
138.14μg/m³
PM10
25.78ppb
O3
0.59ppb
SO2
13.43ppb
NO2
0.39ppm
CO
Air quality and pollutant data for Illinois, USA are sourced from ground-based monitors and satellites, adhering to US EPA standards. Machine learning and advanced algorithms enhance the data by incorporating local variables like traffic and population density, ensuring high accuracy and dependability.
Source: Ambee Data Sources
The air quality information for Quincy, Illinois is updated every hour for accuracy.
In the past 24 hours, the air quality in Quincy, Illinois was at its worst at 09:00:00 on 2025-06-06.
In the last 24 hours, the best air quality in Quincy, Illinois was observed at 11:00:00 on 2025-06-05.
As of now, the AQI in Quincy, Illinois is 97, indicating Moderate conditions.
Quincy, Illinois air has the highest levels of PM2.5.
Poor air quality in Quincy, Illinois means it's advisable to stay indoors and wear a mask for your protection.
PM2.5 levels in Quincy, Illinois are currently 34.209 μg/m3.
The PM10 concentration in Quincy, Illinois is 50.862 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Quincy, Illinois is 0.387 ppm.
Currently, Quincy, Illinois has a sulfur dioxide (SO2) concentration of 0.467 ppb.
The current ozone (O3) level in Quincy, Illinois at the moment is 22.74 ppm.
Nitrogen dioxide (NO2) level in Quincy, Illinois at the moment is 6.903 ppb.
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