SG Air2.08 - App Store

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.

Version History This app has been updated by Apple to prepare for watchOS 27 compatibility. No new features are included.

- minor bug fixing 2.08 11/10/2023 - minor bug fixes 2.07 11/09/2023 - minor bug fixes 2.06 10/28/2023 - bug fixes 2.05 10/24/2023 - Apple watch app changed 3hr PSI to 1hr PSI.
- update coding to support iOS 17
- fix missing hotspots icon in the haze map.
- fix haze map image not load on main page. 2.04 10/22/2023 - minor bug fixes 2.03 03/09/2021 - minor bug fixes 2.02 04/06/2020 - bug fixes: prevent app crashed on Chart page
- prevent app crash from users with location permission not granted
- chart page: long press region button will show selected region only 2.01 03/29/2020 - redesign whole app
- New Features: Crowdsource air quality report, Crowdsource photo, SG Air Camera and more info on haze map. 2.00 03/26/2020 - minor bug fixes 1.15 07/25/2019 - fixed haze map 1.14 05/14/2019 minor updates 1.13 06/02/2018 New items:
- 1-hr ug/m3
- The health impact of haze
- 1-hr psi max - Widget 1.12 02/20/2017 - bugs fixes 1.11 09/22/2016 - bug fixes for iOS 10 users 1.10 09/20/2016 Minor bug fixes:
- users with 4G network should be able to use now.
- improved sub-index notification
- 3hr PSI Today Extension
*if data error on apple watch or Today Extension, please disable & enable again. Sorry for inconvenience. 1.9 08/30/2016 - new feature: switch PSI to AQI
- notification for AQI
- bar chart for AQI
- bug fixes: move line chart to background, banners move to bottom
Notes: if you encounter error on Apple Watch, please reinstall apple watch app at Watch > SG Air. 1.8 10/13/2015 - fix bar chart sorting
- speed up download
- add background line chart
Notes: if you encounter error on Apple Watch, please reinstall apple watch app at Watch > SG Air. 1.7 10/10/2015 - add 1-hr PM2.5 to summary list
- add 10 bar charts
- bugs fixes
- add in-app purchase to remove ads 1.6 10/04/2015 - fixed haze map
- display data time of all index & sub-index
- free notification service
- support Apple Watch 1.5 07/08/2015 bug fixes 1.4 10/29/2014 - add 1-hr PM2.5 sub-index
- auto refresh data when app show from background 1.3 10/23/2014 - update UI
- implement notification service for iOS 8 1.2 10/02/2014 - remove cached for fullscreen haze map
- add simple animation
- fixed minor bugs 1.1 06/21/2014 1.0 06/07/2014