Shlay PSI: SG Haze & Weather

Check Singapore's haze and air quality in seconds. Shlay PSI shows NEA's 24-hr PSI and 1-hr PM2.5 for every region, the health advice for each level, and the weather and forecast where you are.

AIR QUALITY
• 24-hr PSI for North, South, East, West and Central, updated every hour
• 1-hr PM2.5 readings for each region
• A map of Singapore with each region's reading and level
• A 24-hour trend chart. Drag along it to read any hour
• NEA's health advice for each level, from Good to Hazardous, including advice for the elderly, pregnant women, children and people with heart or lung disease
• Clear levels: every colour comes with its name, so you can read them even without seeing the colour

WEATHER
• Temperature, humidity, rainfall and wind from the nearest weather station, plus the UV index
• NEA's heat stress level (WBGT), with advice for outdoor activity
• The 2-hour weather outlook for each region, including rain and thundery showers
• The 24-hour forecast by region, for the night, morning, afternoon and evening
• The 4-day outlook with temperatures and wind

MADE FOR SINGAPORE
• English, Bahasa Melayu, தமிழ் and 中文
• A home-screen widget with the latest PSI and PM2.5
• Alerts when the PSI or PM2.5 reaches an unhealthy level, and when it eases
• Weather alerts for your area: rain on the way, lightning nearby and high heat stress
• A morning brief with today's forecast and the PSI
• Every alert can be turned off in Settings
• Light and dark mode
• Opens instantly with the last readings, even when you're offline
• Share the current PSI and haze level with family and friends
• No ads, no account, no tracking

Looking for the 3-hr PSI? NEA stopped publishing it in 2014. This app shows NEA's 1-hr PM2.5 instead, which reflects the air quality right now.

DATA SOURCE AND DISCLAIMER
Shlay PSI is an independent app by Shlay Studios. It is not affiliated with, endorsed by or representing the National Environment Agency (NEA), data.gov.sg or the Singapore Government.

All readings and forecasts come from NEA through the data.gov.sg real-time API (https://data.gov.sg). Contains information from data.gov.sg, made available under the Singapore Open Data Licence version 1.0 (https://data.gov.sg/open-data-licence).

Readings may be delayed or briefly unavailable. For official announcements and haze advisories, see NEA at https://www.haze.gov.sg and https://www.nea.gov.sg.