https://github.com/chatch/nowcast-aqi

Nowcast AQI calculator for Javascript
https://github.com/chatch/nowcast-aqi

Last synced: 10 months ago
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Nowcast AQI calculator for Javascript

• Host: GitHub
• URL: https://github.com/chatch/nowcast-aqi
• Owner: chatch
• License: gpl-3.0
• Created: 2016-04-11T02:10:41.000Z (about 10 years ago)
• Default Branch: master
• Last Pushed: 2016-04-23T11:11:32.000Z (about 10 years ago)
• Last Synced: 2025-08-02T11:47:10.007Z (10 months ago)
• Language: JavaScript
• Size: 18.6 KB
• Stars: 1
• Watchers: 2
• Forks: 1
• Open Issues: 1
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

          
# nowcast-aqi

[![](https://img.shields.io/npm/v/nowcast-aqi.svg)](https://www.npmjs.com/package/nowcast-aqi)

[![Build Status](https://travis-ci.org/chatch/nowcast-aqi.svg?branch=master)](https://travis-ci.org/chatch/nowcast-aqi)

[Nowcast AQI](https://en.wikipedia.org/wiki/Nowcast_%28Air_Quality_Index%28) calculator

### Usage

```

let nowcast = require('nowcast-aqi')

// nowcast PM

let last12Hours = [13, 16, 10, 21, 74, 64, 53, 82, 90, 75, 80, 50]

nowcast.pm(last12Hours)  // '17.413919413919412'

// nowcast ozone

let last8Hours = [0.14, 0.16, 0.15, 0.14, 0.11, 0.12, 0.12, 0.11]

nowcast.ozone(last8Hours)  // '0.14145147795319638'

// nowcast PM Asian (see proposal at http://aqicn.org/faq/2015-03-15/air-quality-nowcast-a-beginners-guide/)

let last3Hours = [89, 77, 10]

nowcast.pmAsian(last3hours)  // '86.91493659521939'

// nowcast custom hours and weight factor

let last5Hours = [66, 50, 62, 100, 98]

nowcast.custom(last5hours)  // '64.58064516129032'

```