Highest temperature in Guangzhou on August 5?

Platform comparison

Market context

Guangzhou’s airport station is sitting in the middle of a typically hot, humid August pattern, with forecast highs around 32–33°C and some competing local forecasts showing heavier rain but still warm daytime conditions. That makes the market’s current 0% YES pricing look detached from the underlying weather baseline, because the relevant settlement is the day’s *highest* recorded temperature at Guangzhou Baiyun International Airport, not the rainfall or evening low. Current forecast services put 5 August in the low-30s Celsius range, which is consistent with August climatology in Guangzhou rather than an unusually cool day.[1][2][3][12][19]

Historically, August in Guangzhou is one of the city’s warmest periods, with average highs near 33°C and only modest day-to-day variation in many long-range guides. Comparable seasonal references from WeatherSpark, AccuWeather and travel-focused climate summaries all cluster around the low 30s Celsius, which is the key frame for reading this market: if the airport reaches even a routine summer high, the winning temperature band is likely to be well above the market’s implied zero.[1][13][15][16][18] The main risk to that setup is not a cold snap, but an earlier-than-expected thunderstorm or prolonged cloud cover trimming the afternoon peak.

The catalyst to watch is the actual airport observation window in Wunderground’s daily history page, because that is the source used for settlement and it will supersede broader city forecasts once the day unfolds. Near-term hourly radar and weather updates already show Guangzhou in the mid-90s Fahrenheit with high humidity, which supports the view that traders are leaning chiefly on persistence of summer heat rather than any special event or announcement. As a result, the market is likely to move most on intraday temperature spikes, cloudbursts and timing of the daily peak, not on campaign-style catalysts such as scheduled releases or declarations.[8][10][11]

Sources: 1 · 2 · 3 · 4 · 5

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 Guangzhou on August 5? 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.

FAQ

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.

How fast do political markets react to news?

High-liquidity markets move within seconds to minutes. A Trump tweet on the economy can shift the "Trump 2024" market 2-5 points before mainstream media has written anything.

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.

Which political events have the biggest volume?

US Presidential election, party nominations (DNC/RNC), Senate majorities, individual state outcomes (Pennsylvania, Michigan, Wisconsin), and major European elections. Peak markets reach $50-500M per event.