JavaScript utility for converting PPM readings to AQI values (as defined by airnow.gov as of Sept 2018) based on this reference document.
Currently supported pollutant types:
- PM2.5
- PM10
npm install --save airnow-aqi
import { computeAqi } from "airnow-aqi";
computeAqi([
// provide an array of type and ppm reading values
{
type: "pm2.5", // valid types are "pm2.5" and "pm10"
ppm: 10,
},
]); // -> numeric AQI value is returned, -1 if PPM values are out of range.TypeScript typings are provided for this package.