Yes It could be but in one day it probably couldn't be possible.
In one city yes but in the whole world most likely no.
its important to stop prevent air pollution because it could cause death.
To stop air pollution you can stop using fossil fuels sich as gas, oil and coal. They realease gases into the Atmosphere that create air pollution. To save the air you could also try to stop using things such as gas cookers.
you can stop by smoking
The Government could actively participate in the general effort of stopping air pollution. For instance, they could try to invest more money in recycling programs and in awareness programs as well. Also, they could be harsher with companies polluting the air a lot.
Forbid /stop using fireworks
To stop air pollution.
There was a cospiracy that you could shoot it out of the air with an anti-aircraft missile, but it's not possible. You can't stop it.
Some air pollutants in the air are known as dangerous carcinogens. So, it is possible that air pollution can cause cancer.
planting trees..
stop using petrol
People are discontinuing activities that cause air pollution. They are installing equipment that cleans air pollutants before they are released into the air.
Air pollution :)