Question

What is photochemical smog and where is it usually found?

Answer 1

Photochemical smog is a chemical reaction of sunlight,  nitrogen oxides and volatile organic compounds in the atmosphere and i believe it can be found in the ground level ozone. 
 
I hope this helps! <span />

Answer 2

Photochemical smog is a chemical reaction of sunlight,  nitrogen oxides and volatile organic compounds in the atmosphere and i believe it can be found in the ground level ozone.