Highest temperature in Los Angeles on July 9?

Platform comparison

Market context

The real-world event concerns the peak temperature recorded at Los Angeles International Airport on 9 July 2026, a date historically prone to mild coastal moderation rather than extreme inland heat. Current crowd-implied probability for a specific outcome sits at 0%, yet this stark figure diverges sharply from active trading platforms where traders assign a 56% chance to the 74–75°F bracket and a 36% probability to 72–73°F[1]. While some cross-platform analysts suggest 76–77°F as the likely daily high[6], the consensus on major prediction markets firmly centres on the lower 74°F range, indicating a meaningful gap between passive crowd sentiment and active trader conviction.

Historical data for early July in Los Angeles shows daily highs typically ranging from 79°F to 90°F, with an average of 85°F for the month[3]. However, the airport station specifically often records cooler figures due to its coastal proximity, with recent daily maxima near 75°F[1]. This pattern mirrors the settled outcome for 7 July 2026, where the market confirmed 74–75°F with 100% certainty[2], framing the current 0% probability as an anomaly rather than a reflection of climatic reality. Traders should monitor upcoming heatwave advisories and electricity demand forecasts, as the recent California heatwave on 8 July pushed inland temperatures well above seasonal averages while coastal areas remained cooler[5]. Officials are already issuing alerts for hazardous afternoon heat, which could influence temperature trajectories if the marine layer fails to persist on 9 July.

Sources: 1 · 2 · 3 · 4 · 5

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 Kalshi vs Polymarket, which mirrors the Polymarket order book directly.

Resolution & payout

Settlement runs on-chain. Polymarket's contract logic separates YES and NO shares as conditional tokens; at resolution the winning share lifts to $1.00 and the losing one to $0. The outcome input comes from the UMA Optimistic Oracle, which secures against bad resolution with a bond + dispute window.

Once finalised, the smart contract pays USDC to the holders' wallets within minutes — no withdrawal fees beyond Polygon network gas. Kalshi settles in USD via CFTC clearance, Betfair in account currency net of commission, Manifold in play-money mana with no cash-out.

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 Kalshi vs Polymarket. 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.

What's the difference between YES and NO shares?

A YES share pays $1.00 if the event happens, $0 otherwise. A NO share pays $1.00 if the event doesn't happen. The market price between 0¢ and 100¢ is the implied probability.

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 Kalshi vs Polymarket trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.