Data credits

Last updated 13 October 2026

Window is built on open data from Singapore's agencies and others. Thank you to all of them. None of them endorses Window.

National Environment Agency and PUB, via data.gov.sg

Lightning, rain gauges, rain radar, temperature, humidity, wind, the 2-hour, 24-hour and 4-day forecasts, PSI, PM2.5, UV, heat stress (WBGT) and PUB flood alerts.

Contains information from NEA's real-time weather, air quality and forecast datasets and PUB's flood alerts, accessed continuously from data.gov.sg, which is made available under the terms of the Singapore Open Data Licence version 1.0.

MET Norway

Hourly forecasts for the next 12 hours. Data from MET Norway, licensed under CC BY 4.0.

Natural Earth

The coastline on the radar map. Made with Natural Earth, free vector map data, public domain.

Typefaces

Archivo by Omnibus-Type and IBM Plex Mono by IBM, both under the SIL Open Font License.

How Window uses the data

Window combines these sources into its own assessments: storm warnings, rain-in-2-hours, haze and heat advice. Those assessments are Window's, not the agencies'. Official PUB flood alerts are passed on in PUB's own words, marked as official, with a link to PUB Flood Alerts.

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