I have a indoor CO2 monitor and putting it on my balcony it indicates values of 1400-2200 ppm for different days ? Is this even possible and what are the ranges of CO2 levels for the outside air of larger inner cities ?

Also should CO2 be added to the list of gasses measured by the air quality index ? I know it doesn't accurately measure the source that generates the CO2, but at least people should have a general idea of the levels of CO2 in different areas so they can better pick a cleaner place to live in.

  • $\begingroup$ it makes no sense to include this in the air quality index,had it been 10times higher then it had been a good idea to include it. $\endgroup$ – trond hansen Nov 6 at 7:32
  • $\begingroup$ A chart here says typical city center ~500 ppm. $\endgroup$ – Keith McClary Nov 7 at 4:03

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