A Year of Indoor Air Quality! EPA Indoor Environments Division sent this bulletin at 12/02/2019 11:00 AM EST Having trouble viewing this email? View it as a Web page. A Year of Indoor Air Quality As 2019 ends, the U.S. Environmental Protection Agency (EPA) reminds you to pay attention to your indoor air quality. Use the images below to explore the topics and observances that EPA’s Indoor Environments Division emphasizes throughout the year.