As traffic and other sources add more pollutants to the air, the smog gets worse. Ironically, smog is often more severe farther away from the sources of pollution, because the chemical reactions that cause smog take place in the atmosphere while pollutants are drifting on the wind. Smog: Frequently Asked Questions.
There are two major airports if you are flying into the Big Island, Kona International Airport [1] and Hilo International Airport [2]. There are a few non-stop flights from the mainland, mostly from California and Seattle, but it is more common to arrive via Honolulu or Kahului.
Big island Hawaii is the largest island the United States of America has to its name. There are many large islands in the United States out of which Big Island in Hawaii is in the first position as it covers the area of 4,028 square miles. The second and third largest islands in the country are the Kodiak Island and Puerto Rico.