Why is it cloudy and hot at 28 degrees?

It may feel hot at 28 degrees in cloudy weather for the following reasons:

1. Temperature conduction: When the ambient temperature is high, the surrounding objects will absorb heat and conduct it to the human body. Although the direct rays of the sun are blocked by clouds on cloudy days, the temperature in the environment is still very high, which will make people feel hot.

2. Air humidity: In cloudy weather, the humidity may be higher. High humidity will increase the discomfort felt by the human body and make it difficult to dissipate heat. So even if the temperature is not particularly high, high humidity will make people feel sultry.

3. Thermal radiation: Even if there is no direct sunlight, the ground and surrounding objects will release heat into the air through thermal radiation. Such heat will accumulate in the air, causing the ambient temperature to rise and make people feel hot.

Therefore, although the temperature of 28 degrees may not be very hot in some cases, on cloudy days, the feeling of temperature may be higher than the actual temperature. At the same time, everyone will feel the temperature differently, which may also affect the perception of heat.