Highest temperature in Dallas on July 22?

Platform comparison

Market context

The day’s key event is the **highest temperature recorded at Dallas Love Field on 22 July 2026**, with settlement tied to the Wunderground daily history page for KDAL rather than any broader Dallas forecast. On the current Polymarket book, the leading band is **108–109°F at 100%**, while **95°F or below is priced at 0%**, which implies the market is treating a very hot outcome as effectively locked in[1].

That reading is easiest to compare with other books through their market conventions. Polymarket quotes the range outcome as an implied probability, so a 100% line means the crowd sees almost no residual uncertainty; Kalshi would typically express the same view through a contract price near the maximum tick rather than a direct probability, while Betfair and Smarkets show decimal-odds-style pricing that embeds the same view after fees and margin. The important practical difference for traders is that KYC and access rules vary: Polymarket, Kalshi, Betfair and Smarkets do not offer identical geographic reach or onboarding requirements, so the same weather view can be easy to express on one venue and unavailable on another.

For this specific market, the main catalysts are the official airport observation itself and any late-day heat dynamics that could push the maximum into a neighbouring band. Dallas Love Field is the only settlement source that matters, so differences between city-wide forecasts and the airport’s actual peak temperature are what move the outcome. After settlement, the decisive check is whether the recorded high lands inside 108–109°F or spills into the next range; in a market already sitting at 100%, the only meaningful trade is whether another venue is mispriced enough to offer a better entry or exit than the Polymarket book[1].

Sources: 1

Methodology

We read Highest temperature in Dallas on July 22? 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.

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 supports Klarna/SOFORT?

Directly: none. Polymarket accepts only USDC on Polygon. Robinhood Prediction Markets offers a fiat on-ramp via Klarna or SOFORT (DE/AT/CH) and converts internally to USDC for the Polymarket order book. T+1 processing.