Sunshine good for smog disappear?

All we can see the smog is fine particulate matters, part of it cause by chemical pollution, part of it is spray.
So sunning day good for spray fine particulate matter disappear, just like air quality being good.
It is true. Both Smog and spray all own to fine particulate matters can be detected by air particle counter.
On the other hand, because cloudly day always follow with lower air pressure,
once sunning day coming air pressure will be raise, so pollution can be spread to other places.



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