Climatic Information
ASHRAE Technical Committee 4.2


Upcoming TC Meetings

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Our next meetings will be held in conjunction with the 2022 Annual Conference, scheduled for Jun 25-29, 2022 – Toronto, ON, Canada.


Date and time Event and remote participation
Sunday June 19th 
10:00 - 10:30 a.m EDT Program subcommittee (virtual)
10:30 - 11:00 a.m EDT Handbook subcommittee (virtual)
11:00 - 12:00 p.m EDT 1923-RP PMS (virtual)
12:00 - 12:30 p.m EDT 1900-RP PMS (virtual)
12:30 - 01:00 p.m EDT Break
01:00 - 03:00 p.m EDT Research committee (virtual)
Date and time  
Tuesday, June 28th   
01:00 p.m EDT Main committee meeting (in-person and virtual)


For remote participation information, please visit the Meetings page.

Committee Chair

Dr Michael Roth

Committee Scope

TC 4.2 identifies, researches, analyzes, and disseminates climatic data for design of sustainable built environments.


Upcoming Society Conferences

ASHRAE Winter Conference
Feb 4-8, 2022

Additional Information

Do you want to be kept up-do-date about activities of TC 4.2, even if you are not a member? Ask to join the TC 4.2 Google Group by sending a request to the webmaster.

 ASHRAE RP-1847, “Updating Climatic Design Information for the 2021 ASHRAE Handbook, Standard 169, and the Handbook of Smoke Control Engineering", is now complete. Please check for the data in Chapter 14 of the Handbook - Fundamentals, and in the new online Weather Data Viewer, available at Please refer to the ASHRAE Climate Data Center for all these products. The map of all 9,237 sites for which climatic design information is available is available through the following link: