Highest temperature in Manila on July 1?

Platform comparison

Market context

On 1 July 2026, the Ninoy Aquino International Airport in Manila will record its peak daytime temperature, a real-world event that determines settlement for a prediction market where the crowd currently assigns zero probability to any specific range. This 0% implied probability on platforms like Polymarket contrasts sharply with the decimal odds format used by Kalshi or Betfair, where traders might express a 1-in-100 chance as 100.0 odds rather than a flat 0.00 probability. The divergence in fee structures and KYC requirements further separates these books: Polymarket’s anonymous, low-fee model allows rapid position entry, whereas Kalshi demands full identity verification and imposes higher trading fees, potentially suppressing liquidity on niche weather events like this Manila heat spike.

Historical data frames the current probability as highly questionable, given that July daytime temperatures in Manila routinely reach 31°C with very high humidity, falling to 24°C at night[1]. While April is typically the hottest month, the wet season from June to October still delivers average highs of 26°C to 31°C, with July seeing the heaviest rainfall[2]. A record-breaking 38.8°C was logged in Metro Manila in April 2024 at the same PAGASA station, proving extreme heat is possible even outside the dry season[9]. Traders should scrutinise whether the 0% crowd-implied probability reflects a genuine lack of heat risk or merely a liquidity gap on anonymous platforms versus regulated exchanges.

The primary catalyst for traders is the daily weather schedule and any sudden shifts in cloud cover or monsoon intensity, which can suppress peak temperatures below the 31°C average. Recent forecasts for 1 July 2026 indicate partly sunny conditions with temperatures around 31.2°C, suggesting the market’s zero probability may be mispriced relative to actual atmospheric conditions[7]. On platforms like Smarkets, where decimal odds are converted to implied probabilities, traders can spot discrepancies between the 0% crowd view and the 31°C historical norm, especially if fee structures on anonymous sites discourage small-position arbitrage. Monitoring PAGASA’s real-time updates and Wunderground’s hourly records will be essential to validate whether the market’s settlement aligns with the 31°C baseline or deviates due to wet-season cooling.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page compares Highest temperature in Manila on July 1? specifically across Polymarket, Kalshi, Betfair Exchange and Smarkets. The live probability is the Polymarket mid; the comparison columns summarise each venue's fee structure, KYC, settlement currency and payment rails. Every CTA routes to Kalshi Alternative UK, which mirrors the Polymarket order book at 0% fees.

Resolution & payout

Settlement is the biggest difference between the four platforms: Polymarket on-chain in USDC (instant), Kalshi USD via CFTC (T+1), Betfair and Smarkets in local currency via bank withdrawal (T+1 to T+3). On-chain settlement clears in minutes — the fastest payout path of the four.

FAQ

What does Polymarket cost vs Kalshi?

Polymarket: 0% fees, only Polygon network costs (~$0.01/trade). Kalshi: up to 7% per trade plus spread. For high-frequency traders, Polymarket is dramatically cheaper.

Which platform has the deepest liquidity?

Polymarket — by a wide margin. Top markets reach $50-500M volume, Kalshi ~$200M cumulative, Betfair similar. Deeper liquidity means your trade moves the quote less.

Is Betfair a Polymarket alternative?

Only partially. Betfair Exchange is UK-focused with a sports-betting emphasis; they have politics markets but with thinner liquidity than Polymarket. Settlement in GBP/EUR, 2-5% commission on winnings.

Which platform is accessible globally?

Polymarket is geo-blocked in the US/UK/EU. Kalshi is US-only. Betfair and Smarkets are UK-restricted. Kalshi Alternative UK has a different geo footprint and routes to Polymarket's order book at 0% fees.

Are all these platforms regulated?

No. Kalshi is CFTC-regulated (US). Betfair and Smarkets are UK Gambling Commission licensed. Polymarket operates without explicit regulation — a different risk profile than a regulated sportsbook.