Σ market 98¢ · ECMWF 51 members · sparkline = bucket price today · preview bucket ruleEDGE = model − market (+ model sees more · − market rich) · highlight ≥ 15 pts

Station map1 sensors · refresh 10m

Resolution station: HKO HQ

Nearby sensors: PWS network

~2 KM

Live sensors: MapLibre GL · OpenFreeMap dark tiles ship next iteration

Next days: ensemble spread & early markets1 live events · early edge where spread is wide

Model track record · Hong KongScored daily · morning run vs resolution extract · since 2026-09-15

13%

LEADER HIT RATE · 30D

4 of 30 days

1.22

BRIER SCORE · MODEL

lower is better · 0 = clairvoyant

30°C @ 61% → 30.0°C✓ HIT

YESTERDAY · FORECAST VS FACT

actual bucket 30°C

LAST 14 DAYS · LEADER BUCKET HIT

We publish the scorecard because a forecast you cannot audit is just marketing. Bias calibration lands after 2-3 weeks of history; these are raw-model numbers.

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Weather data: Hong Kong Observatory · METAR · Weather Underground · Open-Meteo ECMWF ensemble. Prices: Polymarket. Model probabilities use a preview bucket rule pending full verification on resolved markets. Past performance does not guarantee future results.

GET /api/public/v1/weather/city/hong-kong→ same feed this page reads