Wind Roses from airports around the world - Graphics or Raw Data Tables

Iowa Environmental Mesonet: Wind Rose Plots

Dataset Tabs Default Display


The Iowa Environmental Mesonet (IEM) lets you examine long-term records of wind speed and direction for many locations around the world. For observing stations where wind speeds are measured, mostly at airports, users can access tabular data and / or generate wind rose plots.

Wind roses are graphical charts that characterize the speed and direction of winds measured at weather stations. Presented in a circular format, the length of each "spoke" around the circle indicates the amount of time that the wind blows from the indicated direction. Colors along the spokes indicate categories of wind speed. 

Where do these data come from?

The Iowa Environmental Mesonet (IEM) collects environmental data from cooperating members of observing networks around the world. Many of the networks are similar to Automated Surface Observing Systems (ASOS) installed at airports in the United States. Data collected at these sites are stored and made available on this website, organized into networks based on their geography and/or the organization that administers the network.