The Weather Files -

Many countries provide localized data, such as the Building Performance site for Aotearoa New Zealand. An In-Depth Look at Weather Files - ClimateData.ca

A primary source for thousands of international weather locations. The Weather Files

Reliable weather data is available through several major repositories: Many countries provide localized data, such as the

These contain data from a specific, real-world year. They are essential for calibrating building models against actual utility bills or performance data. 2. Core Data Components Many countries provide localized data

As the climate shifts, historical data (TMY) may become less representative of a building's future lifespan. Engineers now use to "future-proof" designs.