Prediction HFT
WEATHER
Highest temperature in London on May 23?

Highest temperature in London on May 23?

MARKETS7
CLOSESMay 23, 2025 · 12:00 PM UTC
EVENT VOLUME
$149k
MARKETS
7
LIQUIDITY

Markets in this event

7 markets · sorted by volume

Event activity

Across all 7 markets
24H VOLUME
Past 24 hours
TOTAL VOLUME
$149k
Since creation
LIQUIDITY
Available to trade

About this event

Context for traders

This market will resolve to the temperature range that contains the highest temperature recorded at the London City Airport Station in degrees Fahrenheit on May 23, 2025. The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day by the Forecast for the London City Airport Station once information is finalized, available here: https://www.wunderground.com/history/daily/gb/london/EGLC. This market can not resolve to "Yes" until all data for this date has been finalized. The resolution source for this market measures temperatures to whole degrees Fahrenheit (eg, 21°F). Thus, this is the level of precision that will be used when resolving the market. Any revisions to temperatures recorded after data is finalized for this market’s timeframe will not be considered for this market's resolution.

How trading works

Polymarket uses a central limit order book (CLOB) model — you can buy or sell shares of any outcome at the current market price, or place limit orders. Prices represent implied probability: a $0.65 contract means the market prices a 65% chance of that outcome.

FAQ

Resolution & format
How are markets in this event resolved?+
Each market resolves based on the official outcome as verified by the UMA Optimistic Oracle.
When do these markets close?+
Trading closes at May 23, 2025 · 12:00 PM UTC. After close, the UMA oracle proposes a resolution and a 2-hour dispute window opens before final settlement.
How many markets are in this event?+
This event contains 7 markets. Each market settles independently — you can trade any or all of them.
What happens if the resolution source is unavailable?+
If the primary resolution source is unavailable, the market may be delayed or resolved by UMA oracle vote using credible alternative sources. Polymarket's optimistic oracle has final authority on disputed resolutions.
How do I trade on Polymarket?+
You need a Polymarket account (sign up with email or crypto wallet). Connect a Polygon-compatible wallet, fund it with USDC, and you can buy or sell shares of any outcome. All settlements are in USDC.