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.
I cannot give you an exact number, but it is over 14,800. The United States has more airports than any other nation.   According to the CIA World Fact Book, the U.S. has â¦14,951 airports as of 2008, including 5,146 with paved runways, and 9,805 with unpaved runways.   The U.S. also has 146 heliports (2007).