Highest temperature in Manila on June 30?

Platform comparison

Market context

The real-world event hinges on the highest air temperature recorded at Ninoy Aquino International Airport on 30 June 2026, measured in degrees Celsius. Historical June data for Manila shows daytime highs typically reaching 32°C, with long-term averages peaking around 31–33°C under very high heat and humidity [2]. Recent observations confirm this pattern: on 21 June 2026, Metro Manila hit 36.8°C, marking the year’s hottest day so far [8]. Even in 2015, the airport recorded 36.2°C on 30 June, suggesting the 30°C bracket is virtually certain to be exceeded, which aligns with the crowd-implied 0% probability for a YES outcome in that range [10].

Traders should monitor PAGASA’s daily forecasts issued each morning, particularly for signs of tropical storm passage or extreme heat advisories, as these can spike temperatures beyond seasonal norms [3]. The UN’s 2026–2030 climate outlook indicates global temperatures will remain near record levels, with a 91% chance of exceeding 1.5°C above pre-industrial baselines, reinforcing the likelihood of elevated local heat [4]. On platforms like Polymarket, implied probabilities are often quoted as decimals (e.g., 0.00), whereas Kalshi and Betfair use fractional odds or direct probability percentages, affecting how traders interpret risk. Fee structures also diverge: Polymarket charges no platform fees but may include gas costs, while Kalshi imposes trading fees and requires KYC, limiting access for some users compared to Betfair’s global reach.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We read Highest temperature in Manila on June 30? 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

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.

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.

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.

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.