CSCS Activites‎ > ‎Chemistry‎ > ‎

Air Pollution & Patterns

Read about common Air Pollutants, particularly ozone, nitrogen oxides, and carbon monoxide.


Trends in air pollution throughout the day

At what time of day are Ozone, Nitrogen Oxide, and Carbon Monoxide levels highest?

Trends in air pollution throughout the year

What months are Ozone, Nitrogen Oxides, and Carbon Monoxide levels highest?
  • Select the hour at which ozone, nitrogen oxides and carbon monoxide levels are highest. 
  • Each person will be assigned a specific day of the month. Collect the pollutant levels for that day of every month for the entire year.
  • Enter your ozone (O3) data here
  • Enter your nitrogen oxides (NOx) data here.
  • Enter your carbon monoxide (CO) data here
  • Examine the graphs of the average values of ozone, nitrogen oxides and carbon monoxide and report your conclusions in the quickwrite as directed by the instructor.
  • Provide hypotheses for the patterns you observe.

Geographical trends in air pollution

In what geograpical regions are Ozone, Nitrogen Oxides, and Carbon Monoxide levels generally the highest?

  • Select the hour and month at which ozone, nitrogen oxides and carbon monoxide levels are highest.
  • Determine the concentration of these pollutants at this hour for the following days of the month specified: 5,10,15,20,25.
  • Enter your ozone (O3) data here.
  • Enter your nitrogen oxides (NOx) data here.
  • Enter your carbon monoxide (CO) data here.
  • Examine the graphs of the average values of ozone, nitrogen oxides and carbon monoxide and report your conclusions in the quickwrite as directed by the instructor.
  • Provide hypotheses for the patterns you observe.
  • Evaluate your findings in light of the chemistry of ozone
  • Evaluate geographical trends in light of topography and prevailing winds (map)

How has the Air Quality changed in Los Angeles historically? Examine the historical data in the following table
and discussion your conclusions as directed.