Today I saw a rainbow after almost a decade. I live in Noida (a city) in India. Most people I know believe that: we don't see rainbows nowadays because of pollution and now after nearly 3 months since the COVID lock-down, the pollution must have come down and the rainbow was visible. Is this the reason why rainbows have become so rare or is it a false belief?
Here is news about the rainbow I saw here(so you can see the photos)
According to this site https://aqicn.org/map/delhi/ PM2.5 in Delhi(very close to Noida) today is $74$ and last year in 2019 on this day was $151$.
If the answer is yes, how does pollution impact rainbows?