# Air Quality Index (AQI) Calculator
> The package calculates AQI according to the [Indian National AQI Standards](http://www.indiaenvironmentportal.org.in/files/file/Air%20Quality%20Index.pdfhttp:// " Indian National AQI Standards"). This can change in the future as per standards. This is just first version of AQI calculation and we are still awaiting a very standard and clear way of calculating AQI.
aqi-calculator is an NPM package that allows you to calculate Air Quality Index (AQI) with the help of pollutant concentrations ranging from `PM2.5` `PM10` `SO2` `NOX` `O3` `CO`.
## Why aqi-calculator?
We make use of AQI calculations to power our air quality application [(BreeZo)](https://aqi.breezo.in/ "(BreeZo)") and its API. Therefore, we are making this independent calculator to set the same standard of calculation across all our applications.
## Installation
#### Using Browser
```html
```
#### Using NPM
```shell
npm install aqi-calculator
```
## Client-Side Example - Browser
```html
Example AQI Calculator
```
## Client-Side Example - React
```javascript
import React from "react";
import aqiCalculator from "aqi-calculator";
const DATA = [
{
datetime: "2020-03-27T13:00:00.000Z", //Taking the 24-hour average concentration - change when you use this example
pm25: null,
pm10: null,
so2: null,
no: null,
nox: null,
no2: null,
o3: null,
co: null,
},
{
datetime: "2020-03-27T14:00:00.000Z", //Taking the 24-hour average concentration - change when you use this example
pm25: 294,
pm10: 297,
so2: 3,
no: 32,
nox: 41,
no2: 18,
o3: 63,
co: null,
},
{
datetime: "2020-03-27T15:00:00.000Z", //Taking the 24-hour average concentration - change when you use this example
pm25: 213,
pm10: 275,
so2: 5,
no: 33,
nox: 43,
no2: 19,
o3: 59,
co: null,
},
];
const AQIComponent = () => {
const AQI = aqiCalculator(DATA);
return AQI;
};
export default AQIComponent;
```
## Server-Side Example - NodeJs
```javascript
const aqiCalculator = require("aqi-calculator");
const DATA = [
{
datetime: "2020-03-27T13:00:00.000Z", //Taking the 24-hour average concentration - change when you use this example
pm25: null,
pm10: null,
so2: null,
no: null,
nox: null,
no2: null,
o3: null,
co: null,
},
{
datetime: "2020-03-27T14:00:00.000Z", //Taking the 24-hour average concentration - change when you use this example
pm25: 294,
pm10: 297,
so2: 3,
no: 32,
nox: 41,
no2: 18,
o3: 63,
co: null,
},
{
datetime: "2020-03-27T15:00:00.000Z", //Taking the 24-hour average concentration - change when you use this example
pm25: 213,
pm10: 275,
so2: 5,
no: 33,
nox: 43,
no2: 19,
o3: 59,
co: null,
},
];
const AQI = aqiCalculator(DATA);
console.log(AQI);
```