Home / Prediction Markets / Science / Qingdao July 9 Temperature: Will It Hit 31°C? Qingdao July 9 Temperature: Will It Hit 31°C? ☆ Watch Paper Trade View on Polymarket → Share SR Sofia Renard Climate & Science Analyst Embed NEW Embed this market Full Compact Copy Published July 7, 2026 6 min read Lines Verdict YES at 98% implied probability LEAN YES: Qingdao's July climatology supports a 31°C high, but coastal marine influence keeps the threshold genuinely contested. Market probability: 68.5%. 98% Market Probability 1h +0.0% 24h +25.9% Trend Moderate (65/100) Volume $117.3K $98.9K in 24h Liquidity $130.9K Deep liquidity Time Left 9 hours Resolves Jul 9 117K Vol. Jul 9, 2026 1H 6H 1D 1W 1M ALL Select lines to display 28°C $25K Vol. 98% Yes 97.8¢ No 2.3¢ 29°C $13K Vol. 1% Yes 1¢ No 99.1¢ 31°C or higher $26K Vol. 1% Yes 0.6¢ No 99.4¢ 30°C $16K Vol. 1% Yes 0.6¢ No 99.5¢ 21°C or below $3K Vol. 0% Yes 0.1¢ No 100¢ 22°C $2K Vol. 0% Yes 0.1¢ No 100¢ Qingdao sits in an interesting meteorological position right now. The market is pricing a 68.5% chance that the city’s highest temperature on July 9 reaches 31°C or above. That number has softened from 73% earlier in the week, slipping about 5% on July 7 alone. Here’s what the measurements are telling us: the gap between where prices are and where they started suggests forecasters or traders have seen something they don’t like. The market question asks whether Qingdao’s daily high on July 9 will hit 31°C or higher. The YES contract trades at 0.69, the NO side at 0.32, with resolution set for July 9 at noon. Total volume sits at $7,017, all of it traded in the last 24 hours, which means this market opened recently and is still finding its footing. How the Qingdao Temperature Contract Works This contract resolves YES if Qingdao’s recorded high temperature on July 9 reaches 31°C or above. It resolves NO across a range of lower outcomes: 30°C, 29°C, 28°C, 27°C, 26°C, 25°C, 24°C, 23°C, 22°C, 21°C or below. The resolution source is the market’s own designated data feed, which will pull the official maximum for that calendar day. YES (31°C or higher) trades at 0.69, implying a 68.5% probability.NO outcomes span ten cooler temperature bands, collectively priced at 0.32. The NO side pays out if Qingdao’s July 9 high lands anywhere below 31°C. Qingdao’s coastal location on the Yellow Sea naturally moderates summer temperatures. Marine influence keeps the city cooler than inland Chinese cities at similar latitudes. A persistent sea breeze or a stalled low-pressure system on July 8 and 9 could cap the high at 29°C or 30°C, putting money on the NO side. Sponsored Partner Momentum and Market Signals The momentum composite here is mixed. The 1-hour price change shows no movement, but the 24-hour window captured a 5% drop on July 7, and the trend score of 37.17 sits in modest bearish territory. That combination points to one likely driver: updated numerical weather prediction models issued on July 7 probably showed a cooler solution for the July 9 period, pulling YES probability down from its opening level. Total volume is $7,017, with all of it arriving in the last 24 hours. Liquidity stands at $55,830, which is healthy relative to volume. That liquidity-to-volume ratio means the order book has depth. But with under $10,000 in total volume, this is a thin market. A single large bet can move the price sharply. The data doesn’t care about the politics, but it does care about sample size, and one confident forecaster could swing this contract several percentage points. The 1-hour price change held flat at 0.0%, suggesting the July 7 selloff has stabilized for now.The 24-hour window captured the full 5% drop, connecting directly to the model update cycle.Trend score of 37.17 confirms mild bearish lean, not panic, but not conviction on YES either.Liquidity at $55,830 provides a cushion, but thin volume means any fresh forecast data will move prices fast.The market opened at 0.73 and has drifted to 0.69, a quiet but consistent move against YES. Lines Analysis: Qingdao’s July Heat Window Qingdao in early July averages daily highs in the upper 20s Celsius. Reaching 31°C requires a combination of factors: a high-pressure ridge pushing warm continental air eastward, suppressed sea breeze, and dry conditions. July 9 falls in the heart of summer, when such ridging events are common for the region. The 68.5% probability reflects that hitting 31°C is the more likely outcome, but not a certainty. The market is pricing uncertainty, not science. What makes the NO outcome real is Qingdao’s geography. The city faces the Yellow Sea directly. When synoptic-scale winds shift onshore even briefly, marine air keeps afternoon highs well below what nearby inland stations record. A 30°C high is entirely plausible if a front stalls or a low deepens offshore. The threshold here is one degree. That single degree is where all the market tension lives. Weather model updates on July 8 morning will be the single most important repricer before resolution.A shift toward onshore flow in 72-hour ensemble forecasts would push YES probability lower.Persistent high-pressure ridging over eastern China through July 9 would push YES back toward 75%.Any official forecast from China Meteorological Administration for Qingdao on July 8 is a direct signal.Overnight low on July 8 serves as a proxy: a warm overnight suggests a hot July 9 maximum. Total volume of $7,017 is modest. The liquidity depth at $55,830 suggests market makers are present, but trader conviction is still forming. The data currently favors YES, with July temperatures in Qingdao regularly clearing 30°C and occasionally touching 31°C or above. The one-degree gap between the threshold and the historical mean is what keeps this market at 68.5% rather than 85%. LINES VERDICT LEAN YES, WATCH THE MODELS Qingdao’s July climatology supports a YES resolution, but the coastal geography and recent price softening signal genuine uncertainty around the 31°C threshold. One degree separates a winning bet from a losing one. What the market says: At 68.5%, the market sees a 31°C high as more likely than not, but thin volume below $10,000 means this probability is still forming. New forecast data before July 9 noon resolution could move prices sharply in either direction. Key unknown: The July 8 morning weather model cycle from global forecast systems is the single most important event before resolution. A warm, high-pressure solution locks in YES. An onshore-flow solution puts 30°C squarely in play. Scientific Context Qingdao’s coastal position on the Yellow Sea creates a natural temperature cap during summer. The city’s July climatological average high sits in the 28°C to 30°C range. Reaching 31°C requires continental warmth to override marine influence. That happens during blocking high events, which are not uncommon in July but are not guaranteed. The 68.5% market price aligns reasonably with the historical frequency of such events in early July. The market is not mispricing the science here. It is accurately reflecting a genuinely close call near a temperature threshold that the city crosses roughly two-thirds of the time in comparable July windows. Frequently Asked QuestionsWhat does 68.5% probability mean for this market?It means traders currently believe Qingdao has roughly a two-in-three chance of recording a daily high of 31°C or above on July 9. Probability shifts as new weather forecast data arrives before the noon resolution.How does the NO contract pay out?NO pays out if Qingdao's July 9 high lands below 31°C, across any of ten cooler bands ranging from 30°C down to 21°C or below. The NO side currently trades at 0.32, implying about a 31.5% chance.What data will most likely move this market before resolution?Updated numerical weather model runs issued July 8 morning are the key catalyst. A warm continental-air solution pushes YES higher. An onshore sea-breeze solution favors NO outcomes near 29°C or 30°C.When does this market resolve?Resolution is set for July 9, 2026 at noon. The market will use the official recorded daily maximum temperature for Qingdao to determine which temperature band wins.Is this market reliable given the low volume?Total volume is $7,017, which is thin. Liquidity at $55,830 provides order-book depth, but a single large trade can shift prices sharply. Treat the 68.5% probability as directionally informative, not statistically precise.How is the Smart Money Index calculated?We aggregate the live positions of the top 50 Polymarket whales (ranked by 30-day tracked volume) into one composite reading per market. It refreshes every hour. The percentage shows how many of those whales hold YES versus NO; the net dollar position shows the cohort's directional exposure in dollars.What is a convergence signal?A convergence event fires when three or more tracked wallets buy the same outcome on the same market within a four-hour window. We surface these in the activity feed and the VIP digest.Is Lines a market operator?No. Lines is an editorial and data product. We do not operate prediction markets, custody funds, or accept trades. All trade flows deep-link to Polymarket via our affiliate code. Probabilities shown are market-implied and not predictions or recommendations. What Could Shift These Probabilities? High-Pressure Ridge Delivers Continental Heat A blocking anticyclone over eastern China suppresses onshore flow through July 9. Continental dry air pushes Qingdao's afternoon high to 31°C or above. Forecast models confirming this pattern on July 8 would push YES probability back toward 75% or higher, erasing the recent 5% decline. Sea Breeze Caps the Afternoon Maximum Onshore Yellow Sea flow strengthens on July 9, keeping marine air in play through the afternoon heating hours. Qingdao's high stalls at 29°C or 30°C. The July 7 price drop already hints models may be showing this scenario. A continued shift toward coastal cooling pushes YES below 60%. Morning Models Warm Back Up The July 8 morning forecast cycle from global models reverses the cooler July 7 solution. Ensemble means shift back toward 31°C or 32°C for Qingdao. Traders who bought NO at 0.32 face a rapid reprice as YES climbs back toward its opening level of 0.73. Thunderstorm Complex Crashes the High A mesoscale convective system develops over Shandong Province on July 8 night, dragging cooler air behind its outflow boundary. Qingdao's July 9 high drops abruptly to 26°C or 27°C. This low-probability scenario would resolve one of the far-out NO bands and leave YES holders with nothing. Key macro factor: East Asia's summer monsoon positioning in early July 2026 determines whether warm continental air or marine onshore flow dominates Qingdao's temperature profile on July 9. Market Timeline Jul 7, 4:03 AM Market Created Jul 7, 4:04 AM Market Opened 12:00 PM Market Resolution Place paper trade No real money × Highest temperature in Qingdao on July 9? Outcome 28°C · 98% 29°C · 1% 31°C or higher · 1% 30°C · 1% 21°C or below · 0% 22°C · 0% 23°C · 0% 24°C · 0% 25°C · 0% 26°C · 0% 27°C · 0% YES $0.98 NO $0.02 Stake (USD) $100 $500 $1,000 $5,000 Pick a market to see how many shares you would hold. 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