The Weather Files Page

A widely cited repository for updated TMYx files and climate change data.

There are two primary categories of weather files used to analyze building energy demand and resilience:

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

Reliable weather data is available through several major repositories:

Relative humidity and barometric pressure. 3. Future Weather Files & Climate Change A widely cited repository for updated TMYx files

These files help predict how cooling demands might increase and heating demands decrease as global temperatures rise. 4. Sourcing & Global Repositories

Speed and direction to estimate natural ventilation and infiltration. The Weather Files

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.