Highest temperature in Amsterdam on July 16?

Platform comparison

Market context

Amsterdam Airport Schiphol will record its peak temperature for 16 July 2026, with the market resolving to the Celsius range containing that figure. The settlement relies on Wunderground’s historical daily data for the EHAM station, closing at 12:00 UTC on the event date. Current crowd-implied probability sits at 0% for the YES outcome, suggesting traders expect no temperature to fall within the specific range offered, though the exact range remains undefined in the prompt.

Historically, mid-July highs in Amsterdam typically range between 20°C and 28°C, with extreme outliers reaching 35°C during heatwaves like those in 2019 and 2022. A 0% implied probability is unusual for a weather event unless the range is implausibly narrow or misaligned with seasonal norms; on Kalshi or Betfair, such a discrepancy might reflect stricter KYC barriers or decimal-odds formatting that deters casual retail flow, whereas Polymarket’s crypto-native, low-KYC model often amplifies niche sentiment swings.

Traders should monitor the Dutch Meteorological Institute (KNMI) summer forecast releases and any EU-wide heat alerts scheduled for mid-July 2026, as these directly influence temperature extremes. Recent KNMI guidance for the 2026 season highlights increased volatility due to Atlantic pressure shifts, a factor that could push temperatures beyond typical bands [1]. Unlike Smarkets, which caps fees at 2% and requires full identity verification, Polymarket’s fee structure and anonymity may attract speculative positions on tail-risk weather outcomes, potentially distorting implied probabilities relative to traditional books.

[1] KNMI, “Summer 2026 Outlook: Increased Volatility Expected,” 10 June 2026.

Methodology

We read Highest temperature in Amsterdam on July 16? from four platform perspectives: Polymarket (on-chain CLOB), Kalshi (CFTC-regulated exchange), Betfair Exchange (sports book exchange), Smarkets (peer-to-peer betting exchange). Polymarket's live mid is the canonical probability; the side-by-side columns benchmark fees, KYC, settlement currency and deposit rails so you can choose the venue that fits your jurisdiction and trade size.

Resolution & payout

Polymarket settles via UMA Optimistic Oracle on Polygon. A proposer posts the outcome with a bond, the two-hour window runs, then the smart contract pays USDC.

Kalshi settles USD through the CFTC-regulated clearinghouse — the cleanest variant, with heavier KYC. Betfair Exchange settles in account currency (GBP/EUR), net of 2-5% commission. Smarkets follows the same model as Betfair with a lower default 2% commission.

FAQ

Polymarket vs Kalshi — which is better?

Depends on your location. Kalshi is CFTC-regulated, US-only with full KYC. Polymarket is global, on-chain, no KYC up to $1,500. Polymarket has ~10x higher liquidity but higher regulatory risk.

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.

What about Smarkets as an alternative?

Smarkets is a UK betting exchange with a lower default commission (2%) than Betfair. Liquidity on political markets is below Polymarket, comparable to Kalshi. Geo-blocked in many jurisdictions.

Which platform is accessible globally?

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