Venue
Chicago, IL
Find an online community on Zoom, Reddit, Discord, and other platforms
Find a local mask bloc
Search 400,000+ Publications
SAFER - our directory of covid safe/clean air locations - Coming Soon
Resources for PlusLife at home NAAT testing, comparable to PCR.
The physics of N95s are interesting and simple to understand. Here’s how:
Check your local AQI
Find your ideal Air Exchange Rate
From MERV to HEPA - what does it all mean?
How to Build your own DIY Air Purifier for Cleaner Air.
We have a number of other projects in process and intend to publish soon involving educational toolkits for schools, community centers, repurposable widgets, and others.
All of our projects are open-source, open-data, and open-science. Check back at our github for updates.
HEI is a nonprofit corporation chartered in 1980 as an independent research organization to provide high-quality, impartial, and relevant science on the health effects of air pollution. HEI typically receives balanced funding from the U.S. Environmental Protection Agency and the worldwide motor vehicle industry. Other public and private organizations periodically support special projects or certain research programs.
Sessions will include:
HEI 2026 Annual Conference Abstract Submissions Now Open (Deadline for submissions is Friday, January 9, 2026)
We are now accepting abstract submissions for the 2026 HEI Annual Conference for those interested in the Jane Warren Award and for research that is not funded by HEI but is relevant to HEI’s interests.

Find an online community on Zoom, Reddit, Discord, and other platforms
Find a local mask bloc
Search 400,000+ Publications
SAFER - our directory of covid safe/clean air locations - Coming Soon
Resources for PlusLife at home NAAT testing, comparable to PCR.
The physics of N95s are interesting and simple to understand. Here’s how:
Check your local AQI
Find your ideal Air Exchange Rate
From MERV to HEPA - what does it all mean?
How to Build your own DIY Air Purifier for Cleaner Air.
We have a number of other projects in process and intend to publish soon involving educational toolkits for schools, community centers, repurposable widgets, and others.
All of our projects are open-source, open-data, and open-science. Check back at our github for updates.