The 2025 edition of ANSI/ASHRAE Standard 169, Climatic Data for Building Design Standards has been fully revised and updated using data from the 2025 ASHRAE Handbook—Fundamentals, Chapter 14, along with research developed under ASHRAE RP-1923, supporting consistency across energy, resilience, and smoke control applications.

Key updates include:
• 12,424 global station locations, a 35% increase (3,187 additional stations).
• Updated climatic design condition tables for all stations.
• Downloadable electronic tables and climate zone maps included with purchase.

For engineers and designers, Standard 169 remains a foundational input for climate-responsive, code-aligned building performance analysis. Learn more and purchase your copy here