Generally speaking temperature, precipitation, air pressure and other meteorological data are public. Only the domestic data channels need to be paid for, since money can buy itself means it is not top secret.

Currently, the most detailed global meteorological data can be traced back to the Republic of China period, and year-by-year, month-by-month, day-by-day, and hour-by-hour meteorological data are available for free from 1901-2020. As shown in the figure, the red densely packed pins on the map represent one weather station after another, click on any station to get the latitude and longitude information of the station, and click OK to retrieve the weather data of the station. Considering that many weather stations were built and torn down, demolished and built again, and there were not so many weather stations as early as in the 1950s and 1960s. So generally speaking, you will check the year-by-year data first, then the corresponding month-by-month data based on the year that the station can provide, and finally refine to the day-by-day/hour-by-hour data, depending on the actual situation.

Historical weather data preview

In fact, we are more concerned about the accuracy of the weather data, so you will find that there are different data columns in the system such as: measured data, gridded data, and almanac information. Their sources are not the same, the actual measurement is NOAA's ground observation data, the grid is NASA's satellite inversion product, and the yearbook data is issued by the National Bureau of Statistics, which is equivalent to a standard reference. For example, for precipitation in the same geographical area, the data obtained from different columns will be more or less different. In fact, this is a good thing for data analysis and scientific research, multi-channel data compared with each other, can provide us with more reference basis.