These are links about the measurement of air pollution in the ambient air.  See also general air pollution links and ground-level ozone reduction links.

• Ambient air monitoring by APCD
• A map and list of air toxics monitoring sites that APCD operated during 1999-2000 for the West Jefferson County Community Task Force (WJCCTF). The University of Louisville is continuing to sample at some of the sites.
• National Weather Service Field Office in Louisville
• WAVE TV Tower Cam (designed to show the weather, but can also show smog)
• US EPA
  • AirNow: real-time air quality data from many parts of the USA
  • Air Data: recent and historical air quality data from all over the USA
  • The Air Quality Index: What you should know and what you can do
  • Air Quality Index brochure
  • National Air Quality and Emissions Trends and past reports
  • Technology Transfer Network Ambient Monitoring Technology Information Center (AMTIC)
• CAPITA data sets