Skip to main content
U.S. flag

An official website of the United States government

Here’s how you know

Dot gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

HTTPS

Secure .gov websites use HTTPS
A lock (LockA locked padlock) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

    • Environmental Topics
    • Air
    • Bed Bugs
    • Cancer
    • Chemicals, Toxics, and Pesticide
    • Emergency Response
    • Environmental Information by Location
    • Health
    • Land, Waste, and Cleanup
    • Lead
    • Mold
    • Radon
    • Research
    • Science Topics
    • Water Topics
    • A-Z Topic Index
    • Laws & Regulations
    • By Business Sector
    • By Topic
    • Compliance
    • Enforcement
    • Laws and Executive Orders
    • Regulations
    • Report a Violation
    • Environmental Violations
    • Fraud, Waste or Abuse
    • About EPA
    • Our Mission and What We Do
    • Headquarters Offices
    • Regional Offices
    • Labs and Research Centers
    • Planning, Budget, and Results
    • Organization Chart
    • EPA History

Acute Exposure Guideline Levels for Airborne Chemicals

  • What are Acute Exposure Guideline Levels?

    Learn about Acute Exposure Guideline Levels for Airborne Chemicals.

Acute exposure guideline levels (AEGLs) describe the human health effects from once-in-a-lifetime, or rare, exposure to airborne chemicals. Used by emergency responders when dealing with chemical spills or other catastrophic exposures, AEGLs are set through a collaborative effort of the public and private sectors worldwide.

About AEGLs

image of fire in deep water
  • Overview
  • History of AEGLs

Chemical Data

image of periodic table
  • Access AEGLs by Chemical Name, CAS Number or AEGL Status
  • AEGL Chemical Priority Lists

Development Process

image of gears showing a process
  • How AEGLs are Developed
  • Guidance to Develop AEGLs
  • AEGL Federal Register Notices for Proposed AEGLs
  • National Academies Final AEGL Publications

Meetings and Minutes

image of a meeting progress
  • Minutes of AEGL/National Advisory Committee Meetings (1996-2010) 
  • Past AEGL/National Advisory Committee Members and AEGL staff

Related Resources

  • National Academies/Acute Exposure Guide Levels Committee
  • National Library of Medicine Wireless Information System for Emergency Responders (NLM WISER)
  • National Institute for Occupational Safety and Health (NIOSH) Pocket Guide
  • International Chemical Safety Cards
  • American Association of Poison Control Centers
Contact Us to ask a question, provide feedback, or report a problem.
Last updated on May 1, 2025
  • Assistance
  • Spanish
  • Arabic
  • Chinese (simplified)
  • Chinese (traditional)
  • French
  • Haitian Creole
  • Korean
  • Portuguese
  • Russian
  • Tagalog
  • Vietnamese
United States Environmental Protection Agency

Discover.

  • Accessibility Statement
  • Budget & Performance
  • Contracting
  • EPA www Web Snapshot
  • Grants
  • No FEAR Act Data
  • Plain Writing
  • Privacy
  • Privacy and Security Notice

Connect.

  • Data
  • Inspector General
  • Jobs
  • Newsroom
  • Regulations.gov
  • Subscribe
  • USA.gov
  • White House

Ask.

  • Contact EPA
  • EPA Disclaimers
  • Hotlines
  • FOIA Requests
  • Frequent Questions
  • Site Feedback

Follow.