When you click on the Apple phone, the weather is blue

The weather display in blue indicates a low-level warning.

The forecast is divided according to the severity and urgency of the disaster. Blue is the lowest level of warning, which means the level of the disaster is average. Early warning refers to sending emergency signals to relevant departments and reporting dangerous situations based on past summarized patterns or observed possible precursors before disasters or disasters and other dangers that need to be guarded against occur, so as to avoid hazards caused by unknowing or insufficient preparation. Behavior that occurs when the situation occurs, thereby minimizing the losses caused by the hazard.

Weather symbols are a simple weather symbol used to represent current weather phenomena. Common weather symbols include rain, sunshine, fog, etc. The weather represented by weather symbols is represented graphically.