---
title: "Hazel - 1-hour PM2.5 PSI Readings for Singapore - Reviews, Revenue and Downloads in Singapore | Apple App Store"
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"
---

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

![Hazel - 1-hour PM2 App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple6/v4/4a/8a/af/4a8aafe2-425e-88ef-eb5d-2c072e6af55c/pr_source.png/434x0w.png)

**Developer:** [Clean Shaven Apps Pte](https://apptail.io/developer/clean-shaven-apps-pte-Cdab)
**Category:** Weather
**Rating:** 3.6/5 (13 ratings)
**Price:** Free
**Bundle ID:** com.cleanshavenapps.haze
**Store:** Apple App Store
**Country:** Singapore
**Version:** 1.0 (released 2015-10-24)
**Original Release:** 2015-10-25
**Languages:** English

**App Store Link:** [Download on Apple App Store](https://apps.apple.com/sg/app/app/id1047060107)
**AppTail Page:** [https://apptail.io/app/hazel-1-hour-pm25-psi-readings-for-singapore-EjRe/singapore](https://apptail.io/app/hazel-1-hour-pm25-psi-readings-for-singapore-EjRe/singapore)

## Hazel - 1-hour PM2 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.

## Hazel - 1-hour PM2 Screenshots
- [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/Purple6/v4/6c/02/d9/6c02d94f-67cb-d114-3ecc-f16260e73302/pr_source.png/640x960.png)
- [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/Purple6/v4/71/f1/ea/71f1eafd-a17a-c2ae-a0fe-b0f6f0068c21/pr_source.png/640x960.png)
- [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/Purple6/v4/48/33/0a/48330a1a-814f-a6a8-7333-9508c62afc4d/pr_source.png/640x960.png)
- [Screenshot 4](https://is1-ssl.mzstatic.com/image/thumb/Purple22/v4/2b/a6/16/2ba61684-b5cd-4987-e6b9-bcf0568aae08/mzm.leafjbfd.png/640x960.png)
- [Screenshot 5](https://is1-ssl.mzstatic.com/image/thumb/Purple19/v4/ed/65/e1/ed65e17c-07b2-8af5-5866-4409073f4856/mzm.pymxwkdv.png/640x960.png)

## Hazel - 1-hour PM2 Rating Breakdown in Singapore
- 5 stars: 8 (62%)
- 4 stars: 0 (0%)
- 3 stars: 0 (0%)
- 2 stars: 2 (15%)
- 1 stars: 3 (23%)

## Hazel - 1-hour PM2 Reviews in Singapore

### *---- "Bad Reporting"
Taking reading from biased NEA will not give this apps any credibility. NEA readings are controlled & faked.
To be truthful reporting you need to obtain independent certified content including 1 hr & 24 hrs read out without docting
-- joeypstan, 2019-09-26

### *---- "this app say 141 but its only 93 on nea app"
why spoil
-- uselessphone69, 2019-09-17

### **--- "Not trustworthy"
Have compared this with measures on other apps, this is always way lower than the other apps
-- you dont like bad review, 2019-09-14

### ***** "Awesome illustration"
because Maggie Tan did it.
-- supermarioC., 2015-11-08

### ***** "Best Haze Alert App"
I've tried many PSI alert apps and this is the best I found so far. Exactly what I needed: it gives the 1-hour PM2.5 readings, able to change views by location and able to set alerts.

It will be even better though if it shows the hourly trend as well (either a chart or graph), perhaps is can be considered for future enhancements.
-- Nafeillom, 2015-10-27

### ***** "Cleanly done."
App is cleanly done. :)
-- Sim PN, 2015-10-26

### ***** "Clean simple app"
Simple app that does exactly what it is meant to do. And it comes with cool illustrations too. A must have.👍🏻
-- jianbang, 2015-10-24

[View all Hazel - 1-hour PM2 reviews and detailed analytics on AppTail](https://app.apptail.io/signup?utm_campaign=ai-crawl&utm_content=reviews)


## Hazel - 1-hour PM2 Store Rankings
| Chart | Country | Category | Rank |
|-------|---------|----------|------|
| Top Free | Singapore | Weather | #16 |
| Top Free | Vietnam | Weather | #186 |



## Hazel - 1-hour PM2 Available In
- [Singapore](https://apptail.io/app/hazel-1-hour-pm25-psi-readings-for-singapore-EjRe/singapore)
- [Thailand](https://apptail.io/app/hazel-1-hour-pm25-psi-readings-for-singapore-EjRe/thailand)
- [United States](https://apptail.io/app/hazel-1-hour-pm25-psi-readings-for-singapore-EjRe/united-states)
- [Russia](https://apptail.io/app/hazel-1-hour-pm25-psi-readings-for-singapore-EjRe/russia)
- [Mexico](https://apptail.io/app/hazel-1-hour-pm25-psi-readings-for-singapore-EjRe/mexico)
- [Belgium](https://apptail.io/app/hazel-1-hour-pm25-psi-readings-for-singapore-EjRe/belgium)
- [Bulgaria](https://apptail.io/app/hazel-1-hour-pm25-psi-readings-for-singapore-EjRe/bulgaria)
- [Bahrain](https://apptail.io/app/hazel-1-hour-pm25-psi-readings-for-singapore-EjRe/bahrain)
- [Brunei](https://apptail.io/app/hazel-1-hour-pm25-psi-readings-for-singapore-EjRe/brunei)
- [Brazil](https://apptail.io/app/hazel-1-hour-pm25-psi-readings-for-singapore-EjRe/brazil)
- [Belarus](https://apptail.io/app/hazel-1-hour-pm25-psi-readings-for-singapore-EjRe/belarus)
- [Belize](https://apptail.io/app/hazel-1-hour-pm25-psi-readings-for-singapore-EjRe/belize)
- [Canada](https://apptail.io/app/hazel-1-hour-pm25-psi-readings-for-singapore-EjRe/canada)
- [Switzerland](https://apptail.io/app/hazel-1-hour-pm25-psi-readings-for-singapore-EjRe/switzerland)
- [Chile](https://apptail.io/app/hazel-1-hour-pm25-psi-readings-for-singapore-EjRe/chile)
- [China](https://apptail.io/app/hazel-1-hour-pm25-psi-readings-for-singapore-EjRe/china)
- [Colombia](https://apptail.io/app/hazel-1-hour-pm25-psi-readings-for-singapore-EjRe/colombia)
- [Czechia](https://apptail.io/app/hazel-1-hour-pm25-psi-readings-for-singapore-EjRe/czechia)
- [Germany](https://apptail.io/app/hazel-1-hour-pm25-psi-readings-for-singapore-EjRe/germany)
- [Denmark](https://apptail.io/app/hazel-1-hour-pm25-psi-readings-for-singapore-EjRe/denmark)
- [Dominican Republic](https://apptail.io/app/hazel-1-hour-pm25-psi-readings-for-singapore-EjRe/dominican-republic)
- [Algeria](https://apptail.io/app/hazel-1-hour-pm25-psi-readings-for-singapore-EjRe/algeria)
- [Ecuador](https://apptail.io/app/hazel-1-hour-pm25-psi-readings-for-singapore-EjRe/ecuador)
- [Estonia](https://apptail.io/app/hazel-1-hour-pm25-psi-readings-for-singapore-EjRe/estonia)
- [Egypt](https://apptail.io/app/hazel-1-hour-pm25-psi-readings-for-singapore-EjRe/egypt)
- [Spain](https://apptail.io/app/hazel-1-hour-pm25-psi-readings-for-singapore-EjRe/spain)
- [Finland](https://apptail.io/app/hazel-1-hour-pm25-psi-readings-for-singapore-EjRe/finland)
- [France](https://apptail.io/app/hazel-1-hour-pm25-psi-readings-for-singapore-EjRe/france)
- [United Kingdom](https://apptail.io/app/hazel-1-hour-pm25-psi-readings-for-singapore-EjRe/united-kingdom)
- [Greece](https://apptail.io/app/hazel-1-hour-pm25-psi-readings-for-singapore-EjRe/greece)
- [Hong Kong SAR China](https://apptail.io/app/hazel-1-hour-pm25-psi-readings-for-singapore-EjRe/hong-kong)
- [Hungary](https://apptail.io/app/hazel-1-hour-pm25-psi-readings-for-singapore-EjRe/hungary)
- [Indonesia](https://apptail.io/app/hazel-1-hour-pm25-psi-readings-for-singapore-EjRe/indonesia)
- [Ireland](https://apptail.io/app/hazel-1-hour-pm25-psi-readings-for-singapore-EjRe/ireland)
- [Israel](https://apptail.io/app/hazel-1-hour-pm25-psi-readings-for-singapore-EjRe/israel)
- [India](https://apptail.io/app/hazel-1-hour-pm25-psi-readings-for-singapore-EjRe/india)
- [Italy](https://apptail.io/app/hazel-1-hour-pm25-psi-readings-for-singapore-EjRe/italy)
- [Japan](https://apptail.io/app/hazel-1-hour-pm25-psi-readings-for-singapore-EjRe/japan)
- [South Korea](https://apptail.io/app/hazel-1-hour-pm25-psi-readings-for-singapore-EjRe/south-korea)
- [Kuwait](https://apptail.io/app/hazel-1-hour-pm25-psi-readings-for-singapore-EjRe/kuwait)
- [Kazakhstan](https://apptail.io/app/hazel-1-hour-pm25-psi-readings-for-singapore-EjRe/kazakhstan)
- [Lebanon](https://apptail.io/app/hazel-1-hour-pm25-psi-readings-for-singapore-EjRe/lebanon)
- [Luxembourg](https://apptail.io/app/hazel-1-hour-pm25-psi-readings-for-singapore-EjRe/luxembourg)
- [Madagascar](https://apptail.io/app/hazel-1-hour-pm25-psi-readings-for-singapore-EjRe/madagascar)
- [North Macedonia](https://apptail.io/app/hazel-1-hour-pm25-psi-readings-for-singapore-EjRe/north-macedonia)
- [Malta](https://apptail.io/app/hazel-1-hour-pm25-psi-readings-for-singapore-EjRe/malta)
- [Malaysia](https://apptail.io/app/hazel-1-hour-pm25-psi-readings-for-singapore-EjRe/malaysia)
- [Nigeria](https://apptail.io/app/hazel-1-hour-pm25-psi-readings-for-singapore-EjRe/nigeria)
- [Netherlands](https://apptail.io/app/hazel-1-hour-pm25-psi-readings-for-singapore-EjRe/netherlands)
- [Norway](https://apptail.io/app/hazel-1-hour-pm25-psi-readings-for-singapore-EjRe/norway)
- [New Zealand](https://apptail.io/app/hazel-1-hour-pm25-psi-readings-for-singapore-EjRe/new-zealand)
- [Peru](https://apptail.io/app/hazel-1-hour-pm25-psi-readings-for-singapore-EjRe/peru)
- [Philippines](https://apptail.io/app/hazel-1-hour-pm25-psi-readings-for-singapore-EjRe/philippines)
- [Pakistan](https://apptail.io/app/hazel-1-hour-pm25-psi-readings-for-singapore-EjRe/pakistan)
- [Poland](https://apptail.io/app/hazel-1-hour-pm25-psi-readings-for-singapore-EjRe/poland)
- [Portugal](https://apptail.io/app/hazel-1-hour-pm25-psi-readings-for-singapore-EjRe/portugal)
- [Romania](https://apptail.io/app/hazel-1-hour-pm25-psi-readings-for-singapore-EjRe/romania)
- [Saudi Arabia](https://apptail.io/app/hazel-1-hour-pm25-psi-readings-for-singapore-EjRe/saudi-arabia)
- [Sweden](https://apptail.io/app/hazel-1-hour-pm25-psi-readings-for-singapore-EjRe/sweden)
- [Slovakia](https://apptail.io/app/hazel-1-hour-pm25-psi-readings-for-singapore-EjRe/slovakia)
- [Tunisia](https://apptail.io/app/hazel-1-hour-pm25-psi-readings-for-singapore-EjRe/tunisia)
- [Türkiye](https://apptail.io/app/hazel-1-hour-pm25-psi-readings-for-singapore-EjRe/turkey)
- [Taiwan](https://apptail.io/app/hazel-1-hour-pm25-psi-readings-for-singapore-EjRe/taiwan)
- [Ukraine](https://apptail.io/app/hazel-1-hour-pm25-psi-readings-for-singapore-EjRe/ukraine)
- [Uzbekistan](https://apptail.io/app/hazel-1-hour-pm25-psi-readings-for-singapore-EjRe/uzbekistan)
- [Vietnam](https://apptail.io/app/hazel-1-hour-pm25-psi-readings-for-singapore-EjRe/vietnam)
- [United Arab Emirates](https://apptail.io/app/hazel-1-hour-pm25-psi-readings-for-singapore-EjRe/united-arab-emirates)
- [South Africa](https://apptail.io/app/hazel-1-hour-pm25-psi-readings-for-singapore-EjRe/south-africa)
- [Argentina](https://apptail.io/app/hazel-1-hour-pm25-psi-readings-for-singapore-EjRe/argentina)
- [Austria](https://apptail.io/app/hazel-1-hour-pm25-psi-readings-for-singapore-EjRe/austria)
- [Australia](https://apptail.io/app/hazel-1-hour-pm25-psi-readings-for-singapore-EjRe/australia)
- [Azerbaijan](https://apptail.io/app/hazel-1-hour-pm25-psi-readings-for-singapore-EjRe/azerbaijan)

---

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