@EmmaWilliams Hi, which environmental data do you use, in other words from which layer do you get them? Do you get them from the weather picker or from the Meteogram? In the weather picker we know that at same location and time, the data may vary with zoom level. There is often a 10% variation, and more when you are on a high gradient boundary between two zones. This is due to interpolation between gridded data. And for this reason it is better to zoom in. Then have you noticed that data, at same time and location, vary when the model update, so you must check about the run time. A part from reported data from weather stations, Windy does not show observed data but only forecasted data.