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)
47
Good
St. Matthews, Kentucky
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
3.44 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
8.47 μg/m³
0
55
155
255
425
605+
50.55 ppb
0
55
71
86
201
201+
0.13 ppb
0
36
76
186
605
1005+
2.28 ppb
0
54
101
361
1250
2050+
0.10 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 45
Good
3.47μg/m³
PM2.5
8.60μg/m³
PM10
48.60ppb
O3
0.20ppb
SO2
3.15ppb
NO2
0.10ppm
CO
AQI 43
Good
3.42μg/m³
PM2.5
7.38μg/m³
PM10
45.61ppb
O3
0.28ppb
SO2
3.93ppb
NO2
0.11ppm
CO
AQI 44
Good
3.89μg/m³
PM2.5
16.79μg/m³
PM10
48.32ppb
O3
0.29ppb
SO2
3.79ppb
NO2
0.10ppm
CO
AQI 45
Good
3.79μg/m³
PM2.5
13.86μg/m³
PM10
49.18ppb
O3
0.30ppb
SO2
4.11ppb
NO2
0.10ppm
CO
AQI 44
Good
3.87μg/m³
PM2.5
16.56μg/m³
PM10
48.38ppb
O3
0.29ppb
SO2
3.81ppb
NO2
0.10ppm
CO
AQI 46
Good
3.95μg/m³
PM2.5
13.14μg/m³
PM10
49.74ppb
O3
0.30ppb
SO2
4.36ppb
NO2
0.11ppm
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, 2026-07-23.
The best air quality in St. Matthews, Kentucky was observed at 02:00:00 on 2026-07-23.
The air quality in St. Matthews, Kentucky right now is Good, with an AQI of 47.
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 3.442 μg/m3.
St. Matthews, Kentucky currently has a PM10 concentration of 8.467 μg/m3.
The current carbon monoxide (CO) level in St. Matthews, Kentucky is 0.1 ppm.
The current sulfur dioxide (SO2) concentration in St. Matthews, Kentucky is 0.128 ppb.
St. Matthews, Kentucky currently has an ozone (O3) concentration of 50.552 ppm.
The current level of nitrogen dioxide (NO2) in St. Matthews, Kentucky is 2.284 ppb.
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