Polymarket weather markets for Hong Kong settle on the official reading from HKO. The settlement day runs midnight to midnight in Asia/Hong_Kong, and buckets are one degree Celsius wide.
Settlement stationHKO
Settlement timezoneAsia/Hong_Kong
CountryHK
Market unitCelsius
Bucket widthone degree Celsius
Settlement source cited in the current market rules (checked 30 September 2026): Hong Kong Observatory.
What PollyWetter shows for Hong Kong
The official HKO reading and the running daily extreme so far.
A calibrated live estimate beside the official figure, never instead of it.
Implied probability for each bucket from the live order book.
Our own forecast accuracy for HKO, so the estimate can be judged.
Check the market rules for the station, because the settlement station is the market's decision and can change. Remember the day boundary is Asia/Hong_Kong: a market titled for one date can still be open while it is the previous day where you are.
Risk. Prediction markets carry risk and you can lose money. Nothing here is financial advice. Past results do not predict future results.