Days exceeding air quality standards
Create graphs showing how many days per year an air quality standard was violated at any California air pollution monitor.
Select from one of these pollutants:
Ozone (one-hour average): The main summer pollutant, using standards for short-term exposure.
Ozone (eight-hour average): Same as above, using standards for daylong exposure.
PM-10: Dust and other particles measuring 10 microns or less (about one-sixth of a human hair's diameter). The main fall pollutant.
PM-2.5: Soot and other chemical specks measuring 2.5 microns or less (about 1/24 of a human hair's diameter). The main winter pollutant.