SG Air

Singapore Air quality report in PSI/AQI with hourly notification.

Sim Ruenn Kang · com.simsdev.sgair

Not rated yet 10K+ downloads v2.16 11.8 MB Android 5.0+ PEGI 3 · Everyone

Download APK 11.8 MB All versions

Signature matches the Google Play version Details

At a glance

Latest version: v2.16 (2161)
Updated: Sep 9, 2025 (1 year ago)
APK size: 11.8 MB
Requires: Android 5.0+ (API 21)
CPU support: x86 32-bit, x86 64-bit, ARM 32-bit, ARM 64-bit
Graphics: OpenGL ES 2.0+
Category: Weather (app)
Listed since: Mar 18, 2021 (at least)
Permissions: 15 (3 sensitive)
Website: simsdev.com/contactus.php
Developer contact: [email protected]
Privacy: Developer's privacy policy

About this APK

SG Air is an app by Sim Ruenn Kang in the Weather category, listed since at least March 2021. It includes native code for x86 32-bit, x86 64-bit, ARM 32-bit and ARM 64-bit, so it runs on practically every phone.

Since version 2.14, the APK grew from 9.6 MB to 11.8 MB. Since version 2.11, the minimum Android version rose from 4.4 to 5.0. It asks for 15 permissions, 3 of them sensitive: precise location, camera and approximate location. It asks for the same permissions as version 2.15. The app can read the advertising ID that ad and analytics services use.

What's new in v2.16

minor bug fixes

Description

From the listing uploaded by “appupdater”.

Singapore Air quality report with 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 breakpoints converted base on formula from NEA and breakpoints of 24-hr PM2.5(ug/m3). - AQI breakpoints referred from The United States Environmental Protection Agency (EPA)

Version history

4 versions are listed, going back to v2.11. Since v2.14 it requires Android 5.0+.

v2.16 LATEST Sep 9, 2025 11.8 MB TRUSTED v2.15 Aug 21, 2025 9.6 MB TRUSTED v2.14 Aug 10, 2024 9.6 MB TRUSTED v2.11 Aug 25, 2023 8.2 MB TRUSTED

All 4 versions

Security & authenticity

Security rating: Trusted

Signing certificate

Signature matches the Google Play version Checked by the source store on Sep 9, 2025.
Same certificate as the 2 other versions checked

Store checks and file details

Developer signature verified Sep 9, 2025
Validated against Google Play Sep 9, 2025
Signed byOU=Simsdev
Signing certificate (SHA-1)D2:F3:C5:32:C3:1B:5E:A2:EC:96:5C:DA:74:3E:A0:1F:65:60:6E:88
File MD5502fa2ef627b2ce03f4ed9f0621eeedc
Uploaded by “appupdater” Gold tier · 117,810 followers · uploading since 2020

Scans and ratings come from the source store; the certificate comparisons are AAPKs's own, made from the files' published signatures (2 other versions compared). AAPKs doesn't scan files itself — compare the MD5 and signer after downloading.

Permissions (15)

SG Air requests 15 permissions, 3 of them sensitive.

Approximate location Sensitive android.permission.ACCESS_COARSE_LOCATION
Camera Sensitive android.permission.CAMERA
Precise location Sensitive android.permission.ACCESS_FINE_LOCATION
Access adservices ad id android.permission.ACCESS_ADSERVICES_AD_ID
Access adservices attribution android.permission.ACCESS_ADSERVICES_ATTRIBUTION
Access adservices topics android.permission.ACCESS_ADSERVICES_TOPICS
Advertising ID com.google.android.gms.permission.AD_ID
Full network access android.permission.INTERNET
Google Play install referrer com.google.android.finsky.permission.BIND_GET_INSTALL_REFERRER_SERVICE
Internal broadcast protection (app-defined) com.simsdev.sgair.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
Prevent the device from sleeping android.permission.WAKE_LOCK
Receive push notifications com.google.android.c2dm.permission.RECEIVE
Run foreground services android.permission.FOREGROUND_SERVICE
Show notifications android.permission.POST_NOTIFICATIONS
View network connections android.permission.ACCESS_NETWORK_STATE

Required hardware & features

Camera android.hardware.camera
Camera autofocus android.hardware.camera.autofocus
Basic touch input android.hardware.faketouch
Location android.hardware.location
Portrait screen android.hardware.screen.portrait

SG Air APK: questions and answers

Is there a version of SG Air for older Android phones?

The current version needs Android 5.0 or later. Version 2.11 is the newest listed build that installs on Android 4.4 and later. It is an old build: apps that rely on online services may no longer connect when they are this old. Get version 2.11 · All versions

Can I install this APK over the version I already have?

Yes, if your installed copy is older. It is signed like the Google Play version, so Android installs it as an update and keeps your data.

Is the SG Air APK safe?

No one can promise that a file is safe, but some things can be checked. The source store rates this file Trusted. Its signature matches the Google Play version. It is signed with the same certificate as the 2 other versions checked. After downloading, check that the file's MD5 is 502fa2ef627b2ce03f4ed9f0621eeedc.