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Featured Events

14 Jan 2026
Webinar – The IH of Research Univ Hazardous Materials and Waste Management

Practicing industrial hygiene in the high-consequence domain of research university hazardous materials and hazardous waste management is a rare and valuable industrial hygiene…

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28 Jan 2026
Webinar – 2011 to 2023: NOAA & OSHA Inspection Data

Overview of heat-related illnesses, occupational heat exposure, background information on heat exposure, OSHA/NIOSH limits, sampling & analytical methods, occupational exposures, OSHA national Emphasis…

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Featured News

18 Dec 2025
We Welcome and Say Goodbye to Our Leaders

The ACGIH Board of Directors is changing hands. We welcome new leadership while saying farewell to accomplished and talented individuals. As we bring…

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30 Oct 2025
Congratulations to ACGIH’s 2025 Award Winners

Yesterday we honored the 2025 Award Winners during the 2025 Award Winner Recognition & Virtual Annual Meeting.

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ACGIH Office Will Close For Holidays; Online Store Open 24/7

The Board of Directors and staff of ACGIH want to take this opportunity to wish you a safe and happy holiday season! As we wind down 2025, we want to thank you for your continued support of ACGIH.

In observance of the holidays, our office will be closed starting Monday, December 22nd. You may still make purchases during this period through the ACGIH Publications Store. Orders will be shipped and Customer Service will be available starting Monday, January 5, 2026.

Over 87 Years of Service to OEHS Professionals

For over 87 years, ACGIH has been respected for its dedication to the industrial hygiene and occupational and environmental health and safety communities. We have grown and expanded without losing sight of our original goal – to encourage the interchange of experience among industrial hygiene workers and to collect and make accessible such information and data as might be of aid to them in the proper fulfillment of their duties.

ACGIH Vision

To consolidate a global interchange of scientific knowledge supporting worker protection and to prevent occupational and environmental illness and disease.

ACGIH Mission

To advance occupational and environmental health globally by providing educational programs, scientific data, and technical knowledge to Occupational and Environmental Health and Safety (OEHS) professionals in the interest of workers and the public.

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Compressed Schedule to TLV Development Process

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American Conference of Governmental Industrial Hygienists (“ACGIH®”) prohibits any use, copying, modification, transfer, hosting, publication of any ACGIH® Intellectual Property (“IP”) with, to, through, or by Artificial Intelligence (“AI”) tools (including but not limited to ChatGPT, Gemini, and Copilot) without express written permission by an authorized representative of ACGIH®. This includes but is not limited to web-scraping of ACGIH® IP or the use of ACGIH® IP for training AI tools. In case of violation of these terms, ACGIH® reserves the right to enforce its intellectual property rights through suspension or termination of access to its IP, including suspension or termination of access possessed by existing licensees, and through litigation and any other manner ACGIH® deems appropriate.