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.
This update is signed with Apple’s latest signing certificate. No new features are included.
Ratings and Reviews
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.
Clean simple app
Simple app that does exactly what it is meant to do. And it comes with cool illustrations too. A must have.👍🏻
because Maggie Tan did it.
Up to six family members will be able to use this app with Family Sharing enabled.