Properties of Air
Air Quality Workshop for Teachers Toolkit includes Properties of Air
You may need a PDF reader to view files on this page. See EPA’s About PDF page to learn more.
Properties of Air
(8 pp., 477 KB)
EPA has updated the Air Quality Index (AQI) for particle pollution, at the same time the Agency updated the annual health-based standard for this harmful pollutant. AirNow will reflect the updates when they become effective -- 60 days after the rule is published in the Federal Register. Read about the AQI updates.
EPA will host the National Air Quality Conference (NAQC) as a virtual only event on March 18-21, 2024.
Visit the NAQC webpage to learn more about this event.
Air Quality Workshop for Teachers Toolkit includes Properties of Air
You may need a PDF reader to view files on this page. See EPA’s About PDF page to learn more.