# Hazel - 1-hour PM2.5 PSI Readings for Singapore

> Weather

Canonical page: [https://chrome-stats.com/d/id1047060107](https://chrome-stats.com/d/id1047060107)

## Overview

- **ID:** `id1047060107`
- **Platform:** Apple
- **Type:** Apple app
- **Status:** Available
- **Publisher:** Clean Shaven Apps
- **Category:** Weather
- **Rating:** 5.00 / 5 (1 ratings)
- **Version:** 1.0
- **Last updated:** 2015-10-25
- **First published:** 2015-10-25
- **Size:** 19 MB
- **Data as of:** 2026-09-11
- **Store listing:** [Apple App Store](https://apps.apple.com/us/app/hazel-1-hour-pm2-5-psi-readings-for-singapore/id1047060107)

## Description

Hazel tells you how bad the haze is right now, right where you are.

Make better decisions about whether you need a mask, or if you should be bringing your baby out.



Hazel calculates the 1-hour PSI using a formula provided by NEA. It converts the concentration of PM2.5 pollutant into a scale from 0–500.

Hourly push notifications keeps you up to date about the latest 1-hour PSI readings the moment NEA releases the data.

## Rankings

- #792,871 — Overall

## Similar extensions and apps

- [SG Haze](https://chrome-stats.com/d/id6759855036) — 5.00 / 5
- [SG Real PSI: Haze PSI](https://chrome-stats.com/d/id1503441405)
- [Haze@SG](https://chrome-stats.com/d/id663816616) — 5.00 / 5
- [Haze Weather](https://chrome-stats.com/d/id1048478382) — 1.00 / 5
- [Singapore Air Quality](https://chrome-stats.com/d/id841263655) — 4.20 / 5
- [SG Air](https://chrome-stats.com/d/id881004442) — 3.00 / 5
- [Sky SG](https://chrome-stats.com/d/id6775114322)
- [SunLah: Singapore Weather](https://chrome-stats.com/d/id6780696424)
- [ASEAN Air](https://chrome-stats.com/d/id6502939879)
- [MY API](https://chrome-stats.com/d/id1051801309) — 5.00 / 5
- [Nebulo](https://chrome-stats.com/d/id896360158) — 4.00 / 5
- [Environment](https://chrome-stats.com/d/id1569224845) — 4.80 / 5

---

Source: [Chrome-Stats](https://chrome-stats.com/d/id1047060107)