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Highest temperature in London on June 30?

Five-platform snapshot of "Highest temperature in London on June 30?" — live Polymarket pricing, plus how Kalshi, Betfair and Manifold structure the same contract.

24°C 97% 25°C 4% 26°C 0% 27°C 0% Volume: $193K Liquidity: $77K Closes: 30 Jun 2026
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Highest temperature in London on June 30?

Platform comparison

PlatformYES oddsNO oddsFeeKYCSettlement
Polymarket (via Who Will Win 2026) Pick
polygram.ink (preferred broker)
 97% 3% 0% (USDC on-chain) No-KYC up to $1,500 USDC, auto via UMA oracle See live odds →
Polymarket (direct)
polymarket.com
 97% 3% 0% Geo-blocked in US/UK/EU USDC, on-chain See live odds →
Kalshi
kalshi.com
 — — Up to 7% per trade US-only, KYC required USD See live odds →
Betfair Exchange
betfair.com
 — — 2-5% commission Full KYC from first trade GBP / EUR See live odds →
Manifold Markets
manifold.markets
 — — Play-money (mana) None — play-money Mana (no cash-out) See live odds →

Outcome probabilities

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

OutcomeProbability
24°C97%
25°C4%
26°C0%
27°C0%
28°C0%
29°C0%
30°C0%
31°C or higher0%
21°C or below0%
22°C0%
23°C0%

Market context

Based on real-money crowd forecasting, highest temperature in london on june 30? stands at 97% likelihood according to current market consensus. This market will resolve to the temperature range that contains the highest temperature recorded at the London City Airport Station in degrees Celsius on 30 Jun '26. The resolutio…

Methodology

This page is a comparison snapshot: one live quote, four reference venues with their key attributes, and a single execution path — every trade button routes to Who Will Win 2026, which mirrors the Polymarket order book directly.

Resolution & payout

At resolution the UMA oracle takes over: a proposer posts the outcome with a bond, any token holder can dispute within two hours. Without dispute the result is accepted and the smart contract distributes USDC instantly.

On Kalshi (CFTC-regulated) resolution runs through their in-house clearing engine in USD. Betfair Exchange settles after match end in the account's local currency. Manifold pays no cash — only its in-platform "mana" currency.

FAQ

Is this market available outside the US?
Polymarket itself is geo-blocked in the US/UK/EU. Always check the legal status of prediction markets in your jurisdiction before trading.
What does Polymarket cost to trade?
Polymarket itself charges 0% — the only cost is the Polygon network fee, typically under $0.01 per transaction. Off-chain venues like Kalshi or Betfair charge 2-7% commission.
How fast are USDC deposits?
Polygon credits deposits after 12 confirmations — usually under 30 seconds. Withdrawals follow the same path and land back in your wallet within minutes.
Do I need to KYC for this market?
On Polymarket directly, no — it's wallet-based. Intermediary brokers like Who Will Win 2026 trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.
How reliable are the quoted odds?
The YES/NO percentages are the live mid-prices of the Polymarket order book. On deep markets they move every few seconds; on thinner ones you'll see short plateaus.
Jordan LeeJordan LeeSports Prediction ReporterandChris ReedChris ReedPolitical Forecasting Editor

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