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
5.79 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
19.03 μg/m³
0
55
155
255
425
605+
10.54 ppb
0
55
71
86
201
201+
0.64 ppb
0
36
76
186
605
1005+
35.38 ppb
0
54
101
361
1250
2050+
0.48 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
St. Matthews, Kentucky
St. Matthews, Kentucky
Scroll To Air Quality MapLoading...
AQI 33
Good
5.95μg/m³
PM2.5
16.99μg/m³
PM10
11.26ppb
O3
0.66ppb
SO2
34.64ppb
NO2
0.44ppm
CO
AQI 33
Good
6.08μg/m³
PM2.5
11.34μg/m³
PM10
9.00ppb
O3
0.70ppb
SO2
33.87ppb
NO2
0.40ppm
CO
AQI 33
Good
6.29μg/m³
PM2.5
27.84μg/m³
PM10
14.44ppb
O3
0.59ppb
SO2
32.62ppb
NO2
0.40ppm
CO
AQI 33
Good
6.22μg/m³
PM2.5
27.86μg/m³
PM10
14.99ppb
O3
0.51ppb
SO2
32.67ppb
NO2
0.39ppm
CO
AQI 33
Good
6.25μg/m³
PM2.5
27.67μg/m³
PM10
14.66ppb
O3
0.58ppb
SO2
32.58ppb
NO2
0.40ppm
CO
AQI 38
Good
6.54μg/m³
PM2.5
32.58μg/m³
PM10
14.80ppb
O3
0.44ppb
SO2
32.14ppb
NO2
0.38ppm
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 10:00:00, 2026-01-22.
The best air quality in St. Matthews, Kentucky was observed at 01:00:00 on 2026-01-23.
The air quality in St. Matthews, Kentucky right now is Good, with an AQI of 33.
In St. Matthews, Kentucky, NO2 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 5.791 μg/m3.
St. Matthews, Kentucky currently has a PM10 concentration of 19.031 μg/m3.
The current carbon monoxide (CO) level in St. Matthews, Kentucky is 0.479 ppm.
The current sulfur dioxide (SO2) concentration in St. Matthews, Kentucky is 0.641 ppb.
St. Matthews, Kentucky currently has an ozone (O3) concentration of 10.54 ppm.
The current level of nitrogen dioxide (NO2) in St. Matthews, Kentucky is 35.381 ppb.
All Rights Reserved © Ambee Inc. 2025