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)
33
Good
St. Matthews, Kentucky
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
5.97 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
12.58 μg/m³
0
55
155
255
425
605+
19.94 ppb
0
55
71
86
201
201+
0.96 ppb
0
36
76
186
605
1005+
6.22 ppb
0
54
101
361
1250
2050+
0.20 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 33
Good
5.66μg/m³
PM2.5
13.21μg/m³
PM10
21.99ppb
O3
0.86ppb
SO2
5.72ppb
NO2
0.21ppm
CO
AQI 33
Good
5.61μg/m³
PM2.5
11.44μg/m³
PM10
19.41ppb
O3
0.84ppb
SO2
5.59ppb
NO2
0.21ppm
CO
AQI 33
Good
5.63μg/m³
PM2.5
23.79μg/m³
PM10
22.12ppb
O3
0.81ppb
SO2
5.63ppb
NO2
0.21ppm
CO
AQI 33
Good
6.09μg/m³
PM2.5
19.45μg/m³
PM10
22.29ppb
O3
0.80ppb
SO2
5.61ppb
NO2
0.21ppm
CO
AQI 33
Good
5.68μg/m³
PM2.5
23.75μg/m³
PM10
22.21ppb
O3
0.81ppb
SO2
5.63ppb
NO2
0.21ppm
CO
AQI 33
Good
6.30μg/m³
PM2.5
14.83μg/m³
PM10
22.04ppb
O3
0.80ppb
SO2
5.57ppb
NO2
0.21ppm
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 05:00:00, 2026-09-06.
The best air quality in St. Matthews, Kentucky was observed at 09:00:00 on 2026-09-07.
The air quality in St. Matthews, Kentucky right now is Good, with an AQI of 33.
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 5.967 μg/m3.
St. Matthews, Kentucky currently has a PM10 concentration of 12.577 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 0.965 ppb.
St. Matthews, Kentucky currently has an ozone (O3) concentration of 19.943 ppm.
The current level of nitrogen dioxide (NO2) in St. Matthews, Kentucky is 6.221 ppb.
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