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Highest temperature in Busan on August 18?

"Highest temperature in Busan on August 18?" — live political-market odds plus comparison across the four major prediction venues.

31°C 99% 32°C 1% 25°C or below 0% 26°C 0% Volume: $64K Liquidity: $212K Closes: 18 Aug 2026
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Highest temperature in Busan on August 18?

Platform comparison

PlatformYES oddsNO oddsFeeKYCSettlement
Polymarket (via Trump Prediction) Pick
polygram.ink (preferred broker)
99% 1% 0% (USDC on-chain) No-KYC up to $1,500 USDC, auto via UMA oracle Live odds →
Polymarket (direct)
polymarket.com
99% 1% 0% Geo-blocked in US/UK/EU USDC, on-chain Live odds →
Kalshi
kalshi.com
Up to 7% per trade US-only, KYC required USD Live odds →
Betfair Exchange
betfair.com
2-5% commission Full KYC from first trade GBP / EUR Live odds →
Manifold Markets
manifold.markets
Play-money (mana) None — play-money Mana (no cash-out) Live odds →

Outcome probabilities

Current market-implied probability for each outcome, from the live order book.

OutcomeProbability
31°C99%
32°C1%
25°C or below0%
26°C0%
27°C0%
28°C0%
29°C0%
30°C0%
33°C0%
34°C0%
35°C or higher0%

Market context

This market resolves based on the highest temperature recorded at Gimhae International Airport Station in Busan on 18 August 2026, measured in degrees Celsius and sourced from Weather Underground's Daily Observations table rather than summary figures.

Busan's August temperatures have historically clustered in the 28–32°C range for daily highs, with extreme heat events pushing above 33°C occurring roughly once per decade during the summer months. The city's coastal location moderates temperatures compared to inland Korean regions, though the Yellow Sea's warm waters in mid-August can sustain elevated readings. Historical records from the Korea Meteorological Administration show that temperatures exceeding 35°C in Busan remain uncommon but not unprecedented; the 2018 heat wave saw several days above 34°C. Current crowd probability at 0% suggests traders are pricing in expectations well below historical extremes for that date.

The resolution hinges entirely on Weather Underground's recorded data from Gimhae station, making data availability and measurement consistency the primary operational risk. Tropical cyclone activity in the Western Pacific during mid-August could introduce volatility; the 2023 typhoon season saw multiple systems affect Korean temperatures in this window. Traders should monitor long-range weather forecasts from the Korea Meteorological Administration and international models (ECMWF, GFS) as August 2026 approaches, particularly any advisories regarding heat domes or typhoon systems that might alter typical seasonal patterns for that specific date.

Methodology

Political prediction markets differ structurally from sports betting: thinner liquidity, longer settlement windows, higher sensitivity to single news events. This page shows the live Polymarket quote for Highest temperature in Busan on August 18? plus platform attributes for the three reference venues, so you can see at a glance where the deepest market for this question sits.

Resolution & payout

For political markets the resolution source is decisive. Polymarket defines a concrete source per contract (e.g. AP, Reuters, official electoral commission) and uses the UMA Optimistic Oracle as the on-chain dispute mechanism. With a clearly defined outcome the USDC payout lands within minutes of the final confirmation.

UK Frequently Asked Questions

How accurate are political prediction markets?
Historically more accurate than polls. Polymarket's Brier score on US 2024 elections was ~0.11 — better than 538 (~0.14) and every mainstream poll. Markets aggregate information with real skin in the game.
What resolution source is used for elections?
Polymarket defines the source per contract — usually Associated Press (AP Race Call), Reuters or the official electoral commission. The source is stated in contract details before the market opens.
How fast do political markets react to news?
High-liquidity markets move within seconds to minutes. A Trump tweet on the economy can shift the "Trump 2024" market 2-5 points before mainstream media has written anything.
Are political prediction markets legal in my country?
It varies. They sit in legal gray areas in most jurisdictions. Polymarket is geo-blocked from US/UK/EU; some broker frontends have a different geo footprint. Trade only with capital you can afford to lose, and only if you understand the legal status in your jurisdiction.
Are UK election prediction markets available from the UK?
Yes. Betfair Exchange and Smarkets offer UKGC-regulated UK election markets (seat counts, party share, constituency results). Polymarket also lists UK election contracts with deeper global liquidity. Betfair winnings are typically tax-free for UK individuals; Polymarket profits are subject to HMRC CGT.
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