Question

What is the specific formula for Air Quality Index (AQI)? and how is it calculated ?

I want to know specifically about it and is there anyone who is expert in aerosol physics. i am doing my thesis in aerosol physics so i need to take some lessons on particular topics.

thank you in advance.

Answer 1

= the (Air Quality) index,

= the pollutant concentration,

= the concentration breakpoint that is ≤ C

= the concentration breakpoint that is ≥ C

= the index breakpoint corresponding to C _{l o w}

= the index breakpoint corresponding to C _{h i g h}

Lets take a example -

Calculate the AQI corresponding to a 24-hr PM_2.5 concentration of 31 g/m³ .

AQI Value	PM2.5 Breakpoints ( g/m3)
0	0
51	15.5
101	40.5
151	65.5
201	150.5

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