Currently I am a chemistry major at a major university. In the future, I would like to work in the air pollution field. What area of study is better for a future career in air pollution and which area did people working in NOAA study in college?
The scientists here in the NOAA Air Resources Laboratory come from a broad array of backgrounds. In most cases, the first degree was a B.S. in one of the classic sciences -- chemistry, physics, mathematics, or perhaps computer science. At the Masters and PhD levels, degrees become more specialized and in addition to the classic sciences include degrees in environmental science, meteorology, atmospheric chemistry, applied math, and probably a whole lot of other things too.
The real keys to breaking into this field are an advanced degree in one of the hard sciences and a period of study with one of the recognized scientists in the field. If you associate yourself with an established program, you will frequently find an abundance of interesting topics that appeal to you, and a professor willing to support you financially through research and teaching stipends. If you must provide all of your own support, look elsewhere.