Meteorology said the air to keep the temperature of the physical quantity called the air temperature, or temperature, international standards, the temperature was measured degrees Celsius (C). Public weather forecast said the temperature it is planting sod scenes were observed from the ground 1.5-meter-high thermometer screen the thermometer measured. As the thermometer to maintain good ventilation and avoid the direct sunlight, so they have better representation. Summer in the afternoon, in heavy traffic, the cement road empty block in the upper balcony of a small environmental temperature than the thermometer screen temperature is much higher -- that is why some people feel the actual temperature and weather stations broadcast the temperature inconsistent reasons.

Air humidity is said air moisture content of the number or extent of the atmospheric humidity signs. The size of available water vapor pressure, absolute humidity, relative humidity and dew point temperature to express. Public forecast is the most commonly used relative humidity. Air relative humidity is the actual water vapor pressure and temperature with the saturation vapor pressure, the values, It is a relatively figures showed that the air humidity from the saturation level.

Strong pressure is atmospheric pressure. Is the weight of air, atmospheric pressure is imposed on the unit area on the edge. Meteorological hPa were used as a pressure measurement units. Pressure is changing, the level of air pressure and air density, temperature and humidity are, the greater the density of the air, temperature and the lower the humidity, pressure will be greater, and vice versa. These different pressure distribution constitute a pressure field, Analysis of market pressure and with time changes in the production forecast is the important basis.