pimoroni
How do I interpret the AQI numbers
In the US AQI has an established meaning as well as how the numbers should be interpreted:
https://en.wikipedia.org/wiki/Air_quality_index#Computing_the_AQI
This is clearly not what Enviro outputs. So what index does enviro use for its AQI? Is a 13 AQI good or bad?
From what I've seen on the forums, the AQI is given as a percentage. So I just take the values and multiply by 5 to get the 0-500 AQI numbers. Well, actually, I took the AQI categories and divided them by 5 to get the percentage.
Mine hovers around 12.8-13, which is the low end of moderate. I don't know how reliable the AQI sensor readings on the Enviro are anyway. There is some discussion in the forums that the way the Enviro reads the data is somewhat dubious.
