Stay updated with real-time air quality in Winchester, Kentucky 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)
39
Good
Winchester, Kentucky
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
4.04 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
16.73 μg/m³
0
55
155
255
425
605+
42.37 ppb
0
55
71
86
201
201+
1.11 ppb
0
36
76
186
605
1005+
7.12 ppb
0
54
101
361
1250
2050+
0.12 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Winchester, Kentucky
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AQI 43
Good
4.04μg/m³
PM2.5
16.07μg/m³
PM10
45.64ppb
O3
1.18ppb
SO2
7.38ppb
NO2
0.12ppm
CO
AQI 39
Good
3.92μg/m³
PM2.5
14.99μg/m³
PM10
41.73ppb
O3
0.63ppb
SO2
6.83ppb
NO2
0.12ppm
CO
AQI 41
Good
3.99μg/m³
PM2.5
17.96μg/m³
PM10
44.00ppb
O3
0.65ppb
SO2
7.25ppb
NO2
0.12ppm
CO
AQI 41
Good
3.81μg/m³
PM2.5
17.02μg/m³
PM10
43.99ppb
O3
0.60ppb
SO2
6.96ppb
NO2
0.12ppm
CO
AQI 43
Good
3.92μg/m³
PM2.5
15.38μg/m³
PM10
45.83ppb
O3
0.81ppb
SO2
7.40ppb
NO2
0.12ppm
CO
AQI 35
Good
4.54μg/m³
PM2.5
18.92μg/m³
PM10
38.31ppb
O3
0.60ppb
SO2
6.70ppb
NO2
0.13ppm
CO
Air quality measurements for Kentucky, USA meet strict US EPA standards. These measurements are collected from reliable sources, including satellites and ground-based monitoring systems. Advanced algorithms and machine learning techniques are applied to the data, factoring in variables such as traffic and population density, to ensure precision and reliability.
Source: Ambee Data Sources
Air quality data for Winchester, Kentucky is updated on an hourly basis.
The worst air quality in Winchester, Kentucky was recorded at 08:00:00 on 2026-07-23.
The best air quality in Winchester, Kentucky was recorded at 02:00:00 on 2026-07-23.
The real-time air quality index in Winchester, Kentucky is 39, currently categorized as Good.
The most common pollutant in Winchester, Kentucky is O3.
If the air quality in Winchester, Kentucky is poor, limit outdoor activities and use a mask to safeguard your health.
The measured PM2.5 levels in Winchester, Kentucky at present are 4.039 μg/m3.
The current PM10 levels in Winchester, Kentucky are 16.732 μg/m3.
The current carbon monoxide (CO) level in Winchester, Kentucky is 0.123 ppm.
The current sulfur dioxide (SO2) levels in Winchester, Kentucky are 1.114 ppb.
The current ozone (O3) levels at Winchester, Kentucky is 42.374 ppm.
The current nitrogen dioxide (NO2) levels at Winchester, Kentucky is 7.116 ppb.
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