Useful, easy to use, but... – Beijing/Shanghai Air Quality (Data from US Embassy) Review

It would be great if there was a feature to get notifications if the air quality is worse than a certain level. For example if you want to know when the air quality is above 100 or the ug/m3 concentration is above 10 you could set the app to notify you. I would even be willing to pay for this feature if it were added.
Review by Brodycantunsub on Beijing/Shanghai Air Quality (Data from US Embassy).