# SG Air

> Singapore Air Quality Index

Canonical page: [https://chrome-stats.com/d/id881004442](https://chrome-stats.com/d/id881004442)

## Overview

- **ID:** `id881004442`
- **Platform:** Apple
- **Type:** Apple app
- **Status:** Available
- **Publisher:** Sim Ruenn Kang
- **Category:** Weather
- **Rating:** 3.00 / 5 (2 ratings)
- **Version:** 2.08
- **Last updated:** 2023-11-10
- **First published:** 2014-06-08
- **Size:** 22 MB
- **Data as of:** 2026-09-20
- **Store listing:** [Apple App Store](https://apps.apple.com/us/app/sg-air/id881004442)
- **Website:** [http://simsdev.com/contactus.php](http://simsdev.com/contactus.php)
- **Privacy policy:** [http://sgair.simsdev.com/privacy\_policy.html](http://sgair.simsdev.com/privacy_policy.html)

## Description

Singapore Air quality report with 1-hr PSI/AQI, 24hr PSI/AQI, 1hr PM2.5(fine particulate matter), 24Hr PM2.5, 24Hr particulate matter (PM10), sulphur dioxide (SO2), nitrogen dioxide (NO2), ozone (O3), and carbon monoxide (CO).

Features:
- 1hr PSI/AQI Widget
- NOTIFICATION service hourly on hazy day base on 1hr PM2.5 PSI/AQI > 100, 24hr PSI/AQI>100 or Sumatra Hotspot count>100
- supported PSI and AQI
- Haze map with wind direction, hotspots location and haze coverage (Map update on evening everyday)
- Line charts with 24hrs data including 24hr PSI/AQI, Sumatra Hotspot Count, 1hr PM2.5, 24Hr PM2.5, 24Hr PM10, 24Hr SO2, 1Hr NO2, 8Hr O3 and 8Hr CO.
- Crowdsource air quality report - check out nearby air quality reported by app users.
- Crowdsource photo - photo uploaded by app users.
- SG Air Camera

Notes: 
- 1hr PM2.5 PSI: We convert it by following formula from NEA and breakpoints of 24-hr PM2.5(ug/m3).

- AQI breakpoints referred from The United States Environmental Protection Agency (EPA)

- if you encounter error on Apple Watch, please reinstall apple watch app at Watch >  SG Air.

## Rankings

- #741,433 — Overall

## Similar extensions and apps

- [Singapore Air Quality](https://chrome-stats.com/d/id841263655) — 4.20 / 5
- [ASEAN Air](https://chrome-stats.com/d/id6502939879)
- [SG Haze](https://chrome-stats.com/d/id6759855036) — 5.00 / 5
- [Haze@SG](https://chrome-stats.com/d/id663816616) — 5.00 / 5
- [Sky SG](https://chrome-stats.com/d/id6775114322)
- [RSG AQMN Dashboard](https://chrome-stats.com/d/id6642679955)
- [SG Real PSI: Haze PSI](https://chrome-stats.com/d/id1503441405)
- [Hazel - 1-hour PM2.5 PSI Readings for Singapore](https://chrome-stats.com/d/id1047060107) — 5.00 / 5
- [Smog Report](https://chrome-stats.com/d/id607748201) — 5.00 / 5
- [Track Air Quality - PM2.5](https://chrome-stats.com/d/id1495026378) — 4.60 / 5
- [Air Quality: AQI Tracker](https://chrome-stats.com/d/id6771326141) — 5.00 / 5
- [Air Quality & AQI](https://chrome-stats.com/d/id6797133793)

---

Source: [Chrome-Stats](https://chrome-stats.com/d/id881004442)