The AQI Data was last updated: 5/17/2021 8:00


Click here for information about pollutants and their health effects.

City AQI Pollutant
Ashland18NO2
Bowling Green42Fine Particulates - FEM
Lexington34Ozone
Northern Kentucky29Fine Particulates - FEM
Owensboro42Fine Particulates - FEM
Paducah51Fine Particulates - FEM
Pikeville29Fine Particulates - FEM

Louisville Metro
Air Pollution Control District-AQI


AQI provides a simple, uniform way to report daily air pollution concentrations,to tell the public about ways to reduce air pollution(associated)with these concentrations, and to describe some general precautionary steps that can be taken. AQI is a reporting tool that converts the pollutant concentrations measured in a community’s air to a simple number on a scale of 0 to 500. Intervals on the AQI scale are related to the potential health effects of the daily measured concentrations of five major pollutants: carbon monoxide (CO), ozone O3, nitrogen dioxide (NO2), sulfur dioxide (SO2) and  particulate matter. The intervals and the terms describing the air(quality)levels are:

Air Quality Index
Levels of Health Concern
Numerical
Value
Meaning
Good0-50Air quality is considered satisfactory, and air pollution poses little or no risk.
Moderate 51-100Air quality is acceptable; however, for some pollutants there may be a moderate health concern for a very small number of people who are unusually sensitive to air pollution.
Unhealthy for
Sensitive Groups		101-150Members of sensitive groups may experience health effects. The general public is not likely to be affected.
Unhealthy 151-200 Everyone may begin to experience health effects; members of sensitive groups may experience more serious health effects.
Very Unhealthy201-300Health alert: everyone may experience more serious health effects.
Hazardous> 300 Health warnings of emergency conditions. The entire population is more likely to be affected.






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Disclaimer: The Division provides the AQI for real-time public notification of current air quality conditions and to assist the general public in understanding potential health impacts from air pollution exposure. The ambient air quality data establishing the AQI is subject to quality assurance procedures and is not considered official.