Check Current Air Quality in Louisville
The Air Quality Index (AQI) tells how clean or polluted your outdoor air is, and what associated health effects might be a concern for you. The EPA calculates the AQI for five major air pollutants regulated by the Clean Air Act, but the primary focus in Kentuckiana is ground-level ozone (O3) and particle pollution (PM2.5).
| AQI Value | Category & Description |
|---|---|
| 1-50 | Good: Air quality is satisfactory, and air pollution poses little or no risk to public health. |
| 51-100 | Moderate: Air quality is considered acceptable. However, there may be a risk for some people, particularly those who are unusually sensitive to air pollution. |
| 101-150 | Unhealthy for Sensitive Groups: Members of sensitive groups may experience health effects. Others are less likely to be affected. |
| 151-200 | Unhealthy: Any member of the general public may experience health effects; members of sensitive groups may experience more serious health effects |
| 201-300 | Very Unhealthy: Health alert. The risk of health effects is increased for everyone. |
| 301 and above | Hazardous: Health warning of emergency conditions. Everyone is more likely to be affected. |
APCD uses the current conditions along with meteorological data to forecast air quality as far as four days ahead. See the air quality forecasts page for more information on this topic.
Resources
- Louisville Air Watch: Live Air Quality from APCD's Air Monitoring Stations
- AirNow: Nationwide Live Air Quality & Forecasts
- EnviroFlash: Sign up to receive Air Quality Forecasts and Air Quality Alerts.
- Air Quality Forecasting
- Monitoring Louisville's Air Quality
- APCD's Air Monitoring Network
- Sign up to receive air quality alerts through text or email.
