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)
44
Good
Quincy, Illinois
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
8.43 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
34.39 μg/m³
0
55
155
255
425
605+
24.10 ppb
0
55
71
86
201
201+
0.67 ppb
0
36
76
186
605
1005+
0.83 ppb
0
54
101
361
1250
2050+
0.21 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
High
Quincy, Illinois
Quincy, Illinois
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AQI 62
Moderate
14.67μg/m³
PM2.5
62.73μg/m³
PM10
33.65ppb
O3
1.46ppb
SO2
1.96ppb
NO2
0.28ppm
CO
AQI 38
Good
6.13μg/m³
PM2.5
27.43μg/m³
PM10
41.08ppb
O3
0.10ppb
SO2
0.72ppb
NO2
0.19ppm
CO
AQI 41
Good
3.60μg/m³
PM2.5
16.00μg/m³
PM10
44.24ppb
O3
0.09ppb
SO2
0.79ppb
NO2
0.18ppm
CO
AQI 44
Good
8.00μg/m³
PM2.5
39.95μg/m³
PM10
39.84ppb
O3
2.02ppb
SO2
1.63ppb
NO2
0.29ppm
CO
AQI 41
Good
5.09μg/m³
PM2.5
21.95μg/m³
PM10
43.55ppb
O3
0.10ppb
SO2
0.71ppb
NO2
0.19ppm
CO
AQI 60
Moderate
14.48μg/m³
PM2.5
60.19μg/m³
PM10
40.70ppb
O3
1.76ppb
SO2
3.40ppb
NO2
0.27ppm
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 02:00:00 on 2025-09-05.
In the last 24 hours, the best air quality in Quincy, Illinois was observed at 07:00:00 on 2025-09-05.
As of now, the AQI in Quincy, Illinois is 44, indicating Good 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 8.431 μg/m3.
The PM10 concentration in Quincy, Illinois is 34.388 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Quincy, Illinois is 0.213 ppm.
Currently, Quincy, Illinois has a sulfur dioxide (SO2) concentration of 0.668 ppb.
The current ozone (O3) level in Quincy, Illinois at the moment is 24.1 ppm.
Nitrogen dioxide (NO2) level in Quincy, Illinois at the moment is 0.829 ppb.
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