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
3.81 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
11.34 μg/m³
0
55
155
255
425
605+
56.26 ppb
0
55
71
86
201
201+
0.71 ppb
0
36
76
186
605
1005+
2.45 ppb
0
54
101
361
1250
2050+
0.12 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
St. Matthews, Kentucky
St. Matthews, Kentucky
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AQI 58
Moderate
3.81μg/m³
PM2.5
11.73μg/m³
PM10
57.11ppb
O3
0.87ppb
SO2
2.96ppb
NO2
0.13ppm
CO
AQI 67
Moderate
3.88μg/m³
PM2.5
11.18μg/m³
PM10
60.13ppb
O3
1.11ppb
SO2
3.43ppb
NO2
0.14ppm
CO
AQI 45
Good
4.11μg/m³
PM2.5
17.92μg/m³
PM10
49.38ppb
O3
0.94ppb
SO2
3.60ppb
NO2
0.13ppm
CO
AQI 47
Good
4.25μg/m³
PM2.5
16.51μg/m³
PM10
51.30ppb
O3
0.78ppb
SO2
3.98ppb
NO2
0.13ppm
CO
AQI 46
Good
4.15μg/m³
PM2.5
17.99μg/m³
PM10
49.54ppb
O3
0.93ppb
SO2
3.62ppb
NO2
0.13ppm
CO
AQI 48
Good
4.18μg/m³
PM2.5
14.84μg/m³
PM10
52.41ppb
O3
0.63ppb
SO2
4.17ppb
NO2
0.13ppm
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 06:00:00, 2026-06-13.
The best air quality in St. Matthews, Kentucky was observed at 08:00:00 on 2026-06-13.
The air quality in St. Matthews, Kentucky right now is Moderate, with an AQI of 58.
In St. Matthews, Kentucky, O3 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 3.729 μg/m3.
St. Matthews, Kentucky currently has a PM10 concentration of 11.353 μg/m3.
The current carbon monoxide (CO) level in St. Matthews, Kentucky is 0.122 ppm.
The current sulfur dioxide (SO2) concentration in St. Matthews, Kentucky is 0.673 ppb.
St. Matthews, Kentucky currently has an ozone (O3) concentration of 57.184 ppm.
The current level of nitrogen dioxide (NO2) in St. Matthews, Kentucky is 2.211 ppb.
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