Highest temperature in Madrid on July 22?

Platform comparison

Market context

Polymarket currently prices this Madrid temperature contract with **39°C** as the clear favourite at 77%, while **40°C** still carries 21%; for a market settled in USDC on Polygon via conditional tokens, that implies traders are leaning towards a very hot but not exceptional reading at Adolfo Suárez Madrid-Barajas Airport rather than a push into the next bracket. The real-world event is the day’s highest recorded airport temperature on 22 July 2026, using Wunderground’s daily history page as the resolution source, so the key question is not the citywide forecast headline but the specific maximum logged before the settlement window closes.[1]

That pricing is broadly consistent with current local forecasts. Infobae reported a maximum of 39°C for Madrid on Wednesday, with 0% rain probability and only light cloud cover, which supports the market’s concentration around the 39°C band.[2] The 40°C bucket is still meaningful because Madrid often sits close to a threshold on severe summer days, and small changes in afternoon heating, haze, or station-level readings can shift the final print by one degree.

A trader watching this market should focus on the timing of any updated AEMET guidance, the intraday evolution of heat across central Spain, and whether airport-specific observations diverge from city forecasts. Late-afternoon peaks are often decisive for daily maximum-temperature markets, so the live station feed matters more than earlier morning readings. Broader July 2026 coverage has repeatedly flagged central Spain, including Madrid, in the high-30s to low-40s Celsius range, which is the relevant range for the remaining brackets.[3]

Sources: 1 · 2 · 3

Methodology

This page reviews Highest temperature in Madrid on July 22? across five venues. The live probability is the Polymarket mid-price, sourced directly from the on-chain Polygon order book; the comparison columns benchmark each venue on fee structure, KYC, settlement currency and payment rails. Every CTA routes to PolyGram, which mirrors the Polymarket order book at 0% fees.

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

Where can I trade this market with the lowest fees?

Polymarket is geo-blocked in the US/UK/EU. The easiest 0%-fee broker into the same order book is PolyGram. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

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.

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 PolyGram 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.