Does the temperature in the weather forecast refer to indoor temperature or outdoor temperature? How to measure?

Generally refers to the outdoor temperature. There are many meteorological observation stations evenly distributed in one place. Although this observatory is not necessarily too big, it has many functions. It can measure the temperature, humidity, wind direction and other contents, calculate the approximate weather on average according to the weather data reported by each monitoring station at different times, and then make weather forecast according to the weather change trend.