Red Alert Peak Fires Le Bourget 36°C Bracket to 59.55%
Le Bourget's 36°C bracket hit 59.55% at 14:59 UTC Friday, up 55.55pp from yesterday's 4% open, as France's red heatwave alert reaches its Friday peak.
By Nadia Frost · Filed June 26, 2026
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Le Bourget's 36°C bracket hit 59.55% at 14:59 UTC Friday, up 55.55pp from yesterday's 4% open, as France's red heatwave alert reaches its Friday peak.
By Nadia Frost · Filed June 26, 2026
London's 36°C bracket surged 32.25pp over 24 hours to a session high of 50.75%, trading at 48.65% at 10:46 UTC Friday as London City Airport already reads 35°C and forecasts point to 97°F.
Filed June 26, 2026
Shanghai's 27°C temperature bracket hit a session high of 97.5¢ at 07:49 UTC Friday, up 61 percentage points from 36.5¢ on confirmed ZSPD temperature data.
Filed June 26, 2026
Hong Kong's 31°C bracket sat at 74.5% Friday after the HKO logged 31.2°C at midday, confirming the day's peak sits inside the resolution bracket.
Filed June 26, 2026
Hong Kong's 32°C YES contract hit 85.5% at 05:18 UTC Thursday — a 49.5-point overnight gain — after the Observatory's main station confirmed the exact resolution threshold at midday.
Filed June 25, 2026
London City Airport's 14:20 UTC METAR read 34°C on Wednesday, pushing the '35°C or below' YES contract to 94.5% — up 28pp in 24 hours.
Filed June 24, 2026
Seoul's 27°C same-day heat bracket hit 60.5% at 05:57 UTC Wednesday, up 53.5 points from a 7% open, as Incheon Airport reads 79°F mid-afternoon.
Filed June 24, 2026
London's ≤35°C limit market priced 68.5% YES at 20:29 UTC Tuesday, up 49pp overnight, as the Met Office amber heat warning tightens Wednesday's forecast to the threshold.
Filed June 23, 2026
Seoul's 30°C YES bracket reached 94.5% at 04:42 UTC Tuesday after an 87pp overnight surge as RKSI logged 83°F, just 3°F shy of the threshold.
Filed June 23, 2026
Shenzhen's heat-threshold contract is pricing at 96.45% as of 09:51 UTC Monday, up 54 percentage points from its 42.5% session open, with the 12:00 UTC settlement roughly 2 hours away.
Filed June 22, 2026
Shanghai's 24°C bracket hit 94.5% at 08:37 UTC Monday, up 79pp overnight, as rain at Pudong Airport pins the day's high at this threshold.
Filed June 22, 2026
Seoul's 27°C bracket sits at 80.5% YES as of 04:28 UTC Monday, up 49pp overnight as Incheon Airport afternoon heat presses the resolution target.
Filed June 22, 2026
Shanghai's 24°C high bracket hit 66% on Polymarket by 03:11 UTC Monday, up 48.5pp as overcast forecasts cap the afternoon high.
Filed June 22, 2026
NYC's 82–83°F temperature bracket hit 73% on Polymarket at 18:31 UTC Sunday, up 34 points from a 39% session open, as Wunderground's LaGuardia forecast locked onto an 82°F afternoon high.
Filed June 21, 2026
LA's Polymarket 70–71°F June 21 high bracket has surged 33.5 points to 79% as of 17:29 UTC Sunday as a marine-layer forecast locks in coastal cooling.
Filed June 21, 2026
Madrid's 39°C bracket surged to 93.35% at 16:32 UTC Sunday as Spain's first official 2026 heatwave drove city-centre temperatures to 40°C.
Filed June 21, 2026
London's 28°C heat-threshold contract surged 79 points to 94.5% by 15:22 UTC Sunday as a Met Office Amber Extreme Heat Warning confirmed scorching conditions.
Filed June 21, 2026
Hong Kong's 33°C Polymarket bracket surged 24 points to 55.5% Sunday as the HKO flags heat continuing through Monday's settlement.
Filed June 21, 2026
The Polymarket contract for the highest temperature at Los Angeles International Airport landing in the 70–71°F band on Saturday stands at 75% as of 18:34 UTC, up 50.5pp from a 24.5% session floor as a deep marine layer grips the coast.
Filed June 20, 2026
London's June 8 16°C temperature contract hit 89.5% as of 16:24 UTC Monday, up 79 points after METAR data confirmed the EGLC station's daily high.
Filed June 8, 2026
The Hong Kong 34°C June 4 contract is at 77% as of 17:47 UTC Wednesday, up 20.5pp as HKO's forecast pins Thursday's maximum exactly at the resolution threshold.
Filed June 3, 2026
Seoul's June 3 temperature contract has surged to 80.5% as of Wednesday morning as Incheon's 86°F forecast sits 3°C above the 27°C resolution threshold.
Filed June 3, 2026
Hong Kong's June 3 34°C-high contract is at 56% as of 01:56 UTC Wednesday, up 14.5pp as HKO's predicted midweek heat window opens.
Filed June 3, 2026
The 28°C bracket trades at 90.6% as of 21:55 UTC Tuesday after the Hong Kong Observatory confirmed 28.7°C as the day's minimum since midnight.
Filed June 3, 2026
Milan's 23°C bracket priced at 93.6% as of 13:40 UTC June 2, up 69.1pp in 24 hours, as Malpensa's station forecast targets the threshold.
Filed June 2, 2026
Shenzhen's 29°C bracket hit 89.2% at 08:32 UTC Sunday as the Bao'an Airport station read 86°F live, with Wunderground resolution due inside four hours.
Filed May 31, 2026
Shenzhen's 29°C contract hit 78.45% at 07:54 UTC Sunday as live Wunderground data confirmed 85°F at Bao'an Airport, hours before noon-UTC resolution.
Filed May 31, 2026
Paris's May 31 threshold contract stands at 92.05¢ as of 02:47 UTC, up 83.05 points from a 9.5¢ open as Météo-France guidance puts Sunday's high near 26°C.
Filed May 31, 2026
At 38.5% on May 29, the June 2026 hottest-on-record market has bounced from a 13% floor as neutral ENSO mutes the European heat read-across.
Filed May 29, 2026
Seoul's 110-120mm May bracket trades at 44.75% — up 33.1 points in 24 hours — as a late-May KMA rain event reshapes the final-48h forecast with the May 31 deadline two days out.
Filed May 29, 2026