what does the pollution index tell us about the condiction?

Answer 1

I'm not sure which index you're referring too, so here are several of the most common ones in use today.

1. AQI (Air Quality Index), used primarily by the EPA in the USA and the MSC in Canada. It's a 0-500 scale. 0-50 (green) indicates good; 50-100 (yellow) indicates moderate; 101-150 (orange) indicates unhealthy for sensitive groups; 151-200 (red) indicates unhealthy; 201-300 (purple) indicates very unhealthy; and 301-500 (maroon) indicates hazardous. The AQI measures primarily ground-level ozone, and is calibrated to let an AQI of 100 be 0.08ppm of ozone. However, the AQI also takes into account other particulates, nitrogen dioxide, and sulfur dioxide.

2. API (Air Pollution Index) is an index similar to the AQI used in Hong Kong and Malaysia. In this scale, also from 0-500, 0-25 indicates low, 26-50 indicates moderate, 51-100 indicates high, 101-200 indicates very high, and 201-500 indicates hazardous. If the API exceeds 500, a state of emergency is declared.

3. PSI (Pollution Standards Index) is also developed by the EPA and uses the same scale, but does not take into account particulates. Even though this scale is still used in the USA, it has been mostly replaced by the AQI. This scale, however, has been adapted by many countries and is in use in many parts of the world.

Answer 2

If the measurements are no more accurate than your measurement of CO2 ,you have nothing.