Highest temperature in Sao Paulo on July 6?

Platform comparison

Market context

The underlying real-world event is the highest temperature recorded at São Paulo-Guarulhos International Airport on 6 July 2026, measured in degrees Celsius. Long-term averages for Brazil in July indicate daytime maximums of roughly 24°C, with six hours of sunshine daily and frequent rainfall, making extreme heat unlikely in the absence of a specific weather anomaly [2]. Historical data for São Paulo specifically shows early July winter highs typically clustering between 21°C and 26°C, a range that aligns with the current crowd-implied probability of 0% for any significantly higher outcome [4]. While a severe heat wave recently pushed perceived temperatures in Rio de Janeiro to a staggering 62°C, this was an outlier event in a different city and does not reflect the standard winter climate of São Paulo [1].

Traders should monitor announcements regarding the first heat wave of 2026, which some forecasts suggest could raise temperatures to as high as 38°C, though this remains a potential rather than confirmed scenario for the airport station [8]. The resolution depends entirely on data from Wunderground for the specific Guarulhos station, meaning any discrepancy between regional forecasts and the actual airport reading could invalidate broader heat wave narratives [1]. With the settlement window ending on 6 July 2026 at 12:00 UTC, the on-chain mechanics on Polygon using USDC and conditional tokens will settle based strictly on this verified daily maximum, leaving no room for subjective interpretation of perceived heat [1]. The current pricing reflects the statistical reality that São Paulo’s winter climate rarely deviates far from its average, rendering high-temperature bets unattractive until a confirmed meteorological shift occurs.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page reviews Highest temperature in Sao Paulo on July 6? 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 Polymarket Legit?, which mirrors the Polymarket order book at 0% fees.

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

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.

Do I need to KYC for this market?

On Polymarket directly, no — it's wallet-based. Intermediary brokers like Polymarket Legit? trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.