This page provides a convenient index of "free" epw weather file resouces.
We do not hold weather data on this website. Instead, links to the original websites are provided.
Currently, two sources are indexed: the official EnergyPlus website, and climate.onebuilding.org.
The EnergyPlus website has 1042 locations in the USA, 71 locations in Canada, and more than 1000 locations in 100 other countries around the world.
It is funded by the U.S. Department of Energy’s Building Technologies Office, and managed by the National Renewable Energy Laboratory.
climate.onebuilding.org is entirely a volunteer effort on the part of two people: Dru Crawley and Linda Lawrie.
The weather data on the website are derived from a number of public sources. The collection currently contains 2705 data sets, and also provides ESPr and DaySim input formats.