Every 2 minutes Window reads NEA's lightning detectors, rain radar and rain gauges around Ang Mo Kio. It tells you when a thunderstorm is closing in and roughly when it will arrive, when to stay indoors because lightning is within 10 km, and when rain is likely in the next two hours.
Haze for Ang Mo Kio comes from NEA's Central region monitors (24-hour PSI and 1-hour PM2.5). The nearest rain gauges are Ang Mo Kio Avenue 5 (1.3 km) and Lower Peirce Reservoir (1.4 km).
Alerts for Ang Mo Kio on Telegram: @WindowSingaporeBot. A heads-up before storms and when haze turns unhealthy; nothing for maybes.