This market predicts whether Paris will record a maximum temperature of exactly 21°C on April 18, 2026. Daily maximum temperature predictions represent some of the most objectively resolvable weather events in prediction markets, as they depend entirely on readings from official meteorological stations with no ambiguity in how the outcome settles. At 29% current odds, traders are pricing this specific temperature outcome as relatively unlikely, implying they expect the day's high to deviate either warmer or cooler. Paris in mid-April typically experiences highs in the 10°C to 18°C range, making a 21°C maximum a moderately warm scenario. The market has generated $1,657 in trading volume over the past 24 hours with $2,469 in total liquidity, showing active trader participation. Temperature prediction markets attract regular traders because they settle with mathematical precision against publicly available meteorological data. Current odds reflect the collective assessment of traders weighing seasonal climate patterns, recent weather developments, and forecasted atmospheric conditions for that specific day.