Stay updated with real-time air quality in St. Matthews, 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)
54
Moderate
St. Matthews, Kentucky
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
11.12 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
20.26 μg/m³
0
55
155
255
425
605+
28.16 ppb
0
55
71
86
201
201+
0.33 ppb
0
36
76
186
605
1005+
4.41 ppb
0
54
101
361
1250
2050+
0.20 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Moderate
St. Matthews, Kentucky
St. Matthews, Kentucky
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AQI 54
Moderate
11.32μg/m³
PM2.5
23.68μg/m³
PM10
27.45ppb
O3
0.42ppb
SO2
4.11ppb
NO2
0.21ppm
CO
AQI 56
Moderate
11.63μg/m³
PM2.5
20.26μg/m³
PM10
27.09ppb
O3
0.52ppb
SO2
3.81ppb
NO2
0.21ppm
CO
AQI 56
Moderate
12.17μg/m³
PM2.5
54.32μg/m³
PM10
19.54ppb
O3
0.48ppb
SO2
3.88ppb
NO2
0.21ppm
CO
AQI 56
Moderate
12.01μg/m³
PM2.5
41.99μg/m³
PM10
18.09ppb
O3
0.50ppb
SO2
3.88ppb
NO2
0.22ppm
CO
AQI 56
Moderate
12.12μg/m³
PM2.5
53.51μg/m³
PM10
19.48ppb
O3
0.48ppb
SO2
3.87ppb
NO2
0.21ppm
CO
AQI 56
Moderate
12.40μg/m³
PM2.5
31.06μg/m³
PM10
15.35ppb
O3
0.55ppb
SO2
3.89ppb
NO2
0.24ppm
CO
The air quality data for Kentucky, 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 St. Matthews, Kentucky are available every hour.
St. Matthews, Kentucky experienced its worst air quality at 08:00:00, 2026-06-07.
The best air quality in St. Matthews, Kentucky was observed at 07:00:00 on 2026-06-08.
The air quality in St. Matthews, Kentucky right now is Moderate, with an AQI of 54.
In St. Matthews, Kentucky, PM2.5 is the most frequently found pollutant.
When air quality in St. Matthews, Kentucky is compromised, staying indoors and wearing a mask can reduce health risks.
St. Matthews, Kentucky currently has a PM2.5 concentration of 11.115 μg/m3.
St. Matthews, Kentucky currently has a PM10 concentration of 20.258 μg/m3.
The current carbon monoxide (CO) level in St. Matthews, Kentucky is 0.202 ppm.
The current sulfur dioxide (SO2) concentration in St. Matthews, Kentucky is 0.326 ppb.
St. Matthews, Kentucky currently has an ozone (O3) concentration of 28.155 ppm.
The current level of nitrogen dioxide (NO2) in St. Matthews, Kentucky is 4.412 ppb.
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