Highest temperature in Los Angeles on July 26?

Platform comparison

Market context

At the moment, Polymarket is pricing the *highest recorded temperature at Los Angeles International Airport on 26 July* as a low-summer outcome, with the 78–79°F band leading on the venue’s own market page and 80–81°F still materially below it. Because settlement uses USDC on Polygon and resolves through conditional tokens, the market is effectively asking traders to price the exact Wunderground daily high at KLAX, not a broad Los Angeles forecast.[1]

The current 0% implied YES view sits against a climate pattern where Los Angeles County typically sees July highs around 29°C, with very little rainfall and often steady breezes, which can cap extreme heat near the coast relative to inland areas.[2] For a market settled on the airport station, that coastal moderation matters more than citywide headlines: KLAX often runs cooler than inland Los Angeles because of marine influence, so the distribution tends to cluster in the upper 70s to low 80s Fahrenheit rather than spiking deep into the 90s. That makes a sub-80°F print historically plausible and helps explain why the market is not carrying a large premium for hotter bands.[2]

A trader watching this contract would focus on the day-of temperature path, especially whether a late-afternoon warm-up or an onshore sea-breeze reversal changes the recorded daily high before the settlement cut-off. Because resolution is based on the station’s highest observed reading for the day, not a forecast or a noon snapshot, the key dependency is the actual KLAX trace on Wunderground rather than media coverage or wider Southern California heat alerts. If a heat event is building, the most relevant catalyst is any official forecast revision for the coastal basin; otherwise, the market usually trades on routine marine-layer persistence rather than discrete announcements.[1][2]

Sources: 1 · 2

Methodology

This page reviews Highest temperature in Los Angeles on July 26? 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

Polymarket-based markets settle through the UMA Optimistic Oracle on Polygon. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution. Payouts settle automatically in USDC the moment the result is final — no bookmaker, no delay.

Kalshi-based markets settle in USD via the CFTC-regulated clearinghouse. Betfair Exchange settles in GBP/EUR net of commission. Manifold is play-money and does not pay out real funds.

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.

How does resolution work?

Through the UMA Optimistic Oracle on Polygon: a proposer submits the outcome, a two-hour challenge window opens, and USDC payouts settle automatically once the result is final.

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.

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.