Where are the data sources of all weather apps? Why do different weather apps display different data?

These App data may be based on big data and cannot be controlled by the meteorological observatory.

It may be the live data collected by an App in the background of mobile phone through big data, or it may be the live data collected by meteorological data of China Meteorological Bureau. The weather forecast data released by mobile App, unless there is information such as "App developed in cooperation with China Meteorological Bureau" under these data, is definitely not released by China Meteorological Bureau, but through informal channels. The application that publishes these informal data has its own R&D team to publish its own weather data.

Theoretically, there are some differences between live data and predicted data. Therefore, not only "-5℃" and the weather forecast "-3℃ to 6℃" have errors, but also the weather forecast data generated by different mobile phones and different apps are different. The data released by some apps, if the location of the mobile phone is different, that is, the location where the live data is collected is different, and the released data is also different.

It is worth mentioning that the meteorological data released by these informal apps are basically consistent with the data released by the meteorological department. Although there are errors, citizens can also refer to them when traveling.

Precautions:

Many citizens rarely use the App developed by the meteorological department, and rarely believe in the formal weather data released by the meteorological department, but believe in the data released by the non-meteorological department App. Here, the Meteorological Bureau reminds the public that to obtain accurate and regular meteorological data, please use the meteorological department's App.