SGHaze — Real-Time PM2.5 Haze Monitor for Singapore
Stay informed about Singapore's air quality with SGHaze, the most detailed real-time PM2.5 haze monitor built for
everyone who calls Singapore home.
REAL-TIME DATA FROM OFFICIAL SOURCES
SGHaze pulls live PM2.5 readings directly from the National Environment Agency (NEA) through Singapore's official
open data API. No third-party guesswork — just reliable, government-sourced air quality data updated every hour
across all monitoring regions.
SMART INTERACTIVE MAP
See air quality at a glance with our color-coded map overlay. SGHaze uses Inverse Distance Weighting (IDW)
interpolation to estimate PM2.5 levels between official monitoring stations, giving you a smooth, detailed picture
of haze conditions across the island.
- Zoom out for a full Singapore overview on a 6×7 grid
- Zoom in for hyperlocal detail on a denser 12×14 grid
- Tap any point to see the estimated PM2.5 value and health category
- Search by region name to jump straight to your area
UNDERSTAND AT A GLANCE
Every reading is color-coded to help you make quick decisions:
- Green: Good (0–55) — Safe for outdoor activities
- Orange: Moderate (56–150) — Caution advised
- Deep Orange: Unhealthy (151–250) — Limit outdoor exposure
- Red: Hazardous (251+) — Stay indoors
HOURLY AIR QUALITY ALERTS
Never be caught off guard. Premium users receive automatic background notifications when PM2.5 levels reach
Unhealthy or Hazardous levels in any region — so you can protect yourself and your family before stepping outside.
BUILT FOR SINGAPORE'S DIVERSITY
SGHaze speaks your language. Choose from 6 languages:
- English
- Mandarin
- Bahasa Melayu
- Tamil
- Hokkien
- Cantonese
SHARE WITH THOSE YOU CARE ABOUT
Quickly share current PM2.5 readings with family and friends via WhatsApp or any messaging app. One tap sends a
clear summary of conditions across all regions.
EMERGENCY CONTACTS AT YOUR FINGERTIPS
Access critical emergency numbers directly from the app — SCDF, Police, NEA Hotline, and hospital emergency lines
— because haze emergencies don't wait.
PREMIUM FEATURES
Subscribe at operation cost price. A single subscription purchase unlocks:
- Full interactive map with zoom and search
- Localized Map (upon app restart)
- Denser data grid for hyperlocal readings
- Hourly background air quality alerts
- Ad-free experience
- Support continued development
PRIVACY-FIRST
SGHaze stores your preferences locally on your device. No accounts, no personal data collection, no tracking.
Payments are handled entirely through Apple — we never see your payment information.
Download SGHaze and breathe easier knowing you always have Singapore's air quality at your fingertips.
Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
