Louisville's Air Monitoring Network

The Louisville Metro Air Pollution Control District (APCD) annually collects tens of millions of data points on Louisville's ambient air conditions. To get a fair representation of air quality throughout Louisville Metro, the APCD currently operates air monitoring sites in five separate locations.

Data collected at the air monitoring sites are made available to the public through a variety of reports and much of it is shared in near-real time through resources like Louisville Air Watch
The monitoring network is evaluated annually to determine if changes to the network are needed. The U.S. Environmental Protection Agency (EPA) requires that all sites meet certain criteria and that monitors are operated using approved procedures to ensure national consistency in air monitoring data. The table below details the current air monitoring sites operated by the APCD.
Site Details

Algonquin Parkway, 4201 Algonquin Parkway (Established 1978)
Parameters Monitored:  Ozone, SO2, VOCs, PM2.5, PM10, Meteorological data
Site Objective:  Population Exposure

Carrithers Middle School, 4320 Billtown Road (Established 2018)
Parameters Monitored:  Ozone, PM2.5, Meteorological data
Site Objective:  Population Exposure 

Cannons Lane, 2730 Cannons Lane (Established 2009)
Parameters Monitored:  Ozone, PM2.5, PM10, SO2, NO2, CO, Meteorological data, PM2.5speciation, Radiation, NOy, PMcoarse, VOCs, Carbonyls
Site Objective:  National Core Monitoring Station, urban scale, population exposure 

Durrett Lane (Near Road site), 1517 Durrett Lane (Established 2014)
Parameters Monitored:  NO2, CO, PM2.5, Meteorological data
Site Objective:  Maximum concentration 

Watson Lane Elementary, 7201 Watson Lane (Established 1992)
Parameters Monitored:  Ozone, PM2.5, SO2, Meteorological data
Site Objective:  Population exposure

There are additional monitoring sites in the region that are not located in Jefferson County and are operated by either the Indiana Department of Environmental Management (IDEM) or the Kentucky Division for Air Quality (KyDAQ). 

The Kentucky Annual Ambient Air Monitoring Network Plan provides an annual overview of the air monitoring network in Kentucky, including sites operated by APCD. This includes location of monitoring sites, sampling and analysis methods, operating schedule, and more.

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