What five aspects should we observe the weather from?

We should observe the weather from five aspects: air pressure, wind direction, wind speed, cloud cover and humidity.

1, air pressure:

The air pressure is equal to the gravity of a vertical air column extending upward to the upper limit of the atmosphere per unit area.

2. Wind direction:

Meteorology determines the wind direction as the wind direction. Therefore, the wind from the north is called the north wind and the wind from the south is called the south wind. When the meteorological station forecasts the wind, the wind direction swings from side to side in a certain direction. When it is uncertain, the word "bias" is used, such as northerly wind. When the wind is very small, it is explained by "uncertain wind direction"

3. Wind speed:

Wind speed can only be graded if there is no grade, and wind speed is the basis for wind grading. Generally speaking, the greater the wind speed, the higher the wind level and the more destructive the wind is. Wind speed is one of the main parameters in climatology research.

4. Number of clouds:

The location of the estimated cloud cover must be able to see the whole sky. When the sky is partially blocked by obstacles such as mountains and houses, the cloud cover should be estimated from the uncovered part of the sky. If a part of the sky is covered by precipitation, this part of the sky should be regarded as covered by clouds that produce precipitation.

5. Humidity:

At a certain temperature, the less water vapor in a certain volume of air, the drier the air; The more water vapor, the wetter the air. The degree of dryness and wetness of air is called "humidity".