Highest temperature in Beijing on August 8?

Platform comparison

Market context

Beijing’s airport station is forecast to sit in late-summer heat, but not at the extreme end: Weather Underground is currently showing **89°F / 71°F** for the city, while other forecast services cluster around a daytime high near **31–34°C**. That places the market in a zone where the most likely settlement bucket is dictated by whether the day peaks just above or just below the low-30s Celsius range, rather than by any broad heatwave narrative. The current crowd-implied **0% YES** suggests traders are either pricing in a temperature band outside the market’s YES threshold or are waiting for the day’s actual observation to confirm where the maximum lands.

For context, August in Beijing is normally the warmest part of the year, with average highs around the mid-30s Celsius on some guides and around 30–31°C on others, depending on the dataset and location used. That makes a single-day maximum in the low 30s a routine outcome rather than an outlier, which is important because markets tied to one specific station can be sensitive to small forecast errors, cloud cover, and afternoon convection. Comparable August readings from recent forecast pages show Beijing oscillating between the upper-20s and low-30s Celsius, so a settlement inside one of the middle ranges would be consistent with seasonal norms.

The main catalyst is the intraday weather evolution at **Beijing Capital International Airport Station**, not any scheduled political or economic event, and traders should lean on the observed temperature track rather than headline forecasts. Weather Underground’s daily observations are the resolution source, so the key dependency is whether the airport station briefly touches a higher band during the settlement window; even a short-lived spike would matter more than the summary high shown elsewhere. For positioning, the immediate watchlist is the hourly trend, cloud cover and rain timing from local forecast providers, because those will determine whether the day tops out in the low, middle or upper 30s Celsius.

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Methodology

Political prediction markets differ structurally from sports betting: thinner liquidity, longer settlement windows, higher sensitivity to single news events. This page shows the live Polymarket quote for Highest temperature in Beijing on August 8? plus platform attributes for the three reference venues, so you can see at a glance where the deepest market for this question sits.

Resolution & payout

Political markets typically settle on official candidate or agency confirmation. Polymarket uses UMA Optimistic Oracle: a proposer posts the outcome with a bond, the two-hour window opens, then the smart contract pays USDC.

Kalshi settles USD via CFTC clearinghouse, with clearly defined resolution sources (e.g. AP race calls for elections). Betfair settles after the official outcome is registered with the league or agency. Manifold is play-money.

UK Frequently Asked Questions

How accurate are political prediction markets?

Historically more accurate than polls. Polymarket's Brier score on US 2024 elections was ~0.11 — better than 538 (~0.14) and every mainstream poll. Markets aggregate information with real skin in the game.

What resolution source is used for elections?

Polymarket defines the source per contract — usually Associated Press (AP Race Call), Reuters or the official electoral commission. The source is stated in contract details before the market opens.

Can prediction markets influence election outcomes?

Markets reflect expectations rather than create them. Studies show public-facing markets can anchor expectations, but don't influence the underlying outcome. Political markets are information, not advocacy.

Why do Polymarket and Kalshi differ on elections?

Kalshi must follow CFTC compliance — strict definitions, clear resolution sources, US citizens only with KYC. Polymarket operates globally without CFTC oversight — deeper liquidity, but also higher regulatory risk.

Are UK election prediction markets available from the UK?

Yes. Betfair Exchange and Smarkets offer UKGC-regulated UK election markets (seat counts, party share, constituency results). Polymarket also lists UK election contracts with deeper global liquidity. Betfair winnings are typically tax-free for UK individuals; Polymarket profits are subject to HMRC CGT.