What kind of issure will influence air pollution

As we all know the air pressure influence air pollution because low air pressure the fine particulate matters
do not easy to spread and "locked" on the city.
So if air pressure change and wind help for city air cleaning, but it is not a way to " clean" air.
Besides, fine particulate matters can dissolve on water, so rainning day raise the humidity help for air cleaning.
As air particle counter detecting, different time on one day only relative to the CO2 and O2 content but without effect on pm2.5 value
Plant not work on this month, so people still need to reduce air pollution production and treatment method to fresh air.


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