How to write the broken line statistical title of weather forecast?

The title of the weather forecast broken line statistical chart usually needs to include the following elements:

1. time range: the title should clearly indicate the time range covered by the statistical chart, such as "weather forecast this week" and "weather trend in the next seven days".

2. Statistical object: the title should clearly indicate the meteorological indicators and statistical objects involved in the statistical chart, such as "temperature change trend", "rainfall statistics" and "air quality index change".