It's sunny. What is this sky ash for?

Influence of meteorological conditions, environmental pollution, weather changes, etc.

1, Meteorological conditions: Meteorological conditions will cause the sky to appear gray. Mist, smoke and other substances can absorb and scatter sunlight, making the sky gloomy. Water vapor and other gases in the atmosphere also scatter sunlight and darken the sky.

2. Environmental pollution: Environmental pollution is also the cause of the gloomy sky. There are serious environmental pollution problems in this area, such as a lot of industrial waste gas and automobile exhaust. Pollutants will cause the sky to appear gray.

3. Impact of weather change: Even if it has cleared up, the sky will remain gloomy for the time being. This is due to the influence of weather changes, cloud cover changes and other factors.