1. Add monthly and annual temperature anomaly from 1991-2020 mean on every month up to June 1979, based on ECMWF.
2. Add a zoom level where one can see street names and buildings to the website.
3. Add an option to overlay weather layers on OpenStreet Map, with cities not showing as they appear on the base map.
4. Add an option to give saved places custom names.
5. Add an option to display temperatures down to tenths of degrees. This, along with the next suggestion, would help in getting data for places where direct observations are not available. Many places do not have weather stations.
6. Add an option to export parameter values to CSV. Many places do not have any weather observations available for many years, and some parameters do not have any. For example, I have not found any site which has historical UV index data in tabular format, and now that Ventusky has a UV index map, this export would show UV index on any place in the world.
7. Add observations from weather stations being displayed on the map.
8. Add weather warnings being displayed on the map, as well as on forecast pages.
9. Add globe view on desktop.
10. Add 16-day ECMWF forecast.
11. Add chance of snow, chance of rain, chance of frost and type of precipitation (rain, sleet, snow).
12. Add maps showing sunrise, sunset and daylength for both past and future (up to 14 days).