Sources & notes
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Cards follow the selected time; tap a value to open its individual chart. Layered charts show sky/rain or humidity/wind; extrema cover the selected forecast horizon. Wind arrows point downwind; direction is where the wind comes from. Humidity uses the left percent scale and dashed dew point the right Celsius scale. Pale sky colours indicate cloud cover and night. Cloud cover is estimated sky coverage, not a probability or cloud thickness. Rain values cover the hour ending then; today’s daily total covers remaining hours only. HKO image windows span 30 minutes and step every 6 minutes.
Forecasts are model estimates for the marked location. Tap the map to move the marker. All times are HKT. Air quality uses the US AQI scale (not Hong Kong AQHI) and covers about 5 days; unavailable hours are left blank. Current HKO warnings are not predictions of future warnings.