What does the weather forecast symbol in Apple's mobile phone mean?

As shown in the figure, it corresponds to the interpretation of weather forecast symbol instrument one by one.

Special symbols representing various weather phenomena, clouds and sky conditions. Includes weather phenomenon symbols for observation and recording and weather graphic symbols for media communication.

Clear: it means that there are no clouds or scattered clouds in the sky, but the cloud amount is less than110, which is called clear. Sometimes there are very high and thin clouds in the sky, but they have little effect on sunlight.

Cloudy: it can be cloudy when the amount of low clouds in the sky accounts for 4/ 10 ~ 7/ 10 of the sky area or the amount of high clouds accounts for more than 6/ 10 of the sky area.

Cloudy day: it is called cloudy when the amount of clouds in the middle and low clouds accounts for more than 8/ 10 of the sky area. Cloudy days are dark days, and little or no sunlight can penetrate the clouds.

Fog: refers to a large number of water droplets or ice crystal particles suspended in the air near the ground. When this aggregate reduces the horizontal visual distance below 1000 meters, it is called fog; When the visible distance drops to 1000 ~ 10000 meters, it is called light fog.

Light rain: it is called light rain when the rainfall in 4 hours is less than 10.0mm or 1 hour is less than 2.5 mm. ..

Moderate rain: the rainfall within 24 hours is 1 0.0 ~ 24.9mm or the rainfall within1hour is 2.5 ~ 8.0mm..

Rainstorm: Rainstorm is called when the rainfall in 24 hours is less than 25.0 ~ 49.9mm or 1 hour reaches 8.1~15.9mm..

Rainstorm: Rainstorm is called when the rainfall reaches or exceeds 50.0mm in 24 hours and 1 hour reaches or exceeds16.0mm.. Heavy rain occurs when the rainfall reaches 100.0 ~ 199.9 mm; The rainfall of 200.0 mm is called rainstorm;

Thundershower: refers to sudden rainfall accompanied by thunder and lightning, which is characterized by short rainfall time, sudden start and end, and great changes in precipitation intensity. Intermittent precipitation accompanied by lightning and thunder.