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Featured Events

10 Dec 2025
Webinar – Applying the Industrial Ventilation Manual in Health Care

Participants will learn how to evaluate forces that mix contaminants with room air. Ways of countering those forces will be discussed. They will also learn…

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17 Dec 2025
Webinar – Making Accurate Exposure Judgements: Critical for Effective and Efficient Risk Management

Join ACGIH for “Making Accurate Exposure Judgements: Critical for Effective and Efficient Risk Management” webinar presented on December 17, 2025 by John Robert…

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Featured News

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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3 Apr 2025
ACGIH Offers Complimentary Resources to Support NIOSH and Other Federal Workers

Dear Fellow OEHS Professionals, In response to the recent cuts at National Institute for Occupational Safety and Health (NIOSH) and other federal workforce…

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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.