The Weather Files (2024)

Speed and direction to estimate natural ventilation and infiltration.

The .epw (EnergyPlus Weather) format is a global standard developed by the U.S. Department of Energy . Other common versions include TMY3 and IWEC files. The Weather Files

Relative humidity and barometric pressure. 3. Future Weather Files & Climate Change Speed and direction to estimate natural ventilation and

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

Direct and diffuse solar intensity, critical for calculating heat gain.

These are the most common files, created by statistically selecting the 12 most "typical" months from a multi-year period (often 10–30 years).