Rolr3 1920x300
Taipei July 4 High: Will 35°C Hit on Independence Day?

Taipei July 4 High: Will 35°C Hit on Independence Day?

View on Polymarket →
SR Sofia Renard Climate & Science Analyst
Embed this market
Lines Verdict
YES at 100% implied probability

PLAUSIBLE MODAL OUTCOME: Taipei climatology and current short-range forecasts center near 35°C for July 4, making this the highest-probability single bracket. The precision requirement justifies a price well below 50%. Market probability: 31.5%.

100% Market Probability
1h +0.0% 24h +59.8% Trend Moderate (65/100)
Volume
$86.4K
$50.4K in 24h
Liquidity
$189.6K
Deep liquidity
Time Left
9 hours
Resolves Jul 4
86K Vol. Jul 4, 2026

Taipei in early July sits inside one of Asia’s most reliable heat corridors. The city routinely pushes into the mid-to-upper 30s during peak summer, and July 4 falls squarely in that window. The market for a 35°C high on that date is priced at 31.5% — meaning traders see it as the single most likely outcome among a dozen discrete temperature brackets, but still a long way from a lock.

The market question asks whether Taipei’s highest recorded temperature on July 4, 2026 will land exactly at 35°C. The YES price sits at 0.32 and the NO price at 0.69. The contract resolves on July 4 at 12:00 UTC. Total volume is $16,707, with all of that trading in the last 24 hours.

How the Thirty-Five Degree Contract Works

This is a discrete outcome market. YES pays if Taipei’s official daily high on July 4 lands at exactly 35°C, not 34°C and not 36°C. Any neighboring bracket captures the payout instead. The resolution body is the market operator, drawing on official meteorological station data for Taipei.

  • YES (35°C exactly): priced at 0.32, implying a 31.5% probability.
  • NO (any other temperature): priced at 0.69, implying a 68.5% probability.

NO wins across a wide range of outcomes. Taipei could hit 34°C on a slightly cooler day, or push to 36°C or higher on a stronger heat surge, and NO collects either way. The real barrier for YES is the precision requirement. Temperature has to land on a single degree, not a range. Meteorological variance of even half a degree at the high end of the day pushes the result into the adjacent bracket.

Momentum and Market Signals

Sponsored Partner
ROLRROLR

The momentum composite here is thin but directional. The trend score of 35.08 is moderate, and the 24-hour price change reflects a move up from 0.23 at open to 0.32 today — roughly a 7-point gain concentrated on July 2. The 1-hour change is flat at 0.0%, suggesting the initial repricing has stabilized. The most likely driver is traders updating their forecasts as the July 4 date moves inside the reliable short-range forecast window for Taipei, where model skill improves sharply inside 72 hours.

Total volume is $16,707, with all of it recorded in the last 24 hours. Liquidity is $75,755, which is healthy relative to the volume — the order book can absorb moderate-sized trades without significant slippage. Volume is below $1 million, which means a single well-placed bet on any adjacent bracket (36°C, 34°C) can reprice this contract quickly. The market is thin and forecast-sensitive.

  • The 24-hour price move from 0.23 to 0.32 reflects traders converging on 35°C as the modal forecast outcome for July 4.
  • The 1-hour flatline at 0.0% suggests the current price has absorbed the latest forecast update and is waiting for the next model run.
  • Liquidity of $75,755 with sub-$1M volume means sharp moves are possible if the forecast shifts even one degree in either direction.
  • Trader sentiment is strongly bearish at 68.5% NO, consistent with the precision-only structure of the market.

Lines Analysis: Taipei Temperature on July Fourth

Taiwan’s Central Weather Administration publishes daily high-temperature data for Taipei’s official monitoring station. July in Taipei historically averages daily highs between 33°C and 37°C, with 35°C sitting near the center of that distribution. That positioning makes 35°C the single highest-probability individual bracket, which explains why it has attracted the most YES liquidity. NWS-equivalent short-range forecasts for Taipei for early July 2026 have been trending in the mid-35°C range, which is what drove the 7-point price move on July 2 as 72-hour model output became more reliable.

The case against YES is structural. Even if the forecast centers on 35°C, actual station readings frequently resolve one degree above or below the modeled peak due to urban heat variation, afternoon convective development, or sea breeze timing. The 36°C bracket and the 34°C bracket each carry meaningful implied probability. Any late-day thunderstorm over Taipei can suppress the afternoon high by 1 to 2 degrees, pushing the outcome to 33°C or 34°C. A stronger-than-forecast ridge can push the reading to 36°C or higher. Both scenarios pay NO.

  • Taiwan’s Central Weather Administration forecast update on July 3 will be the single most important repricing event before resolution.
  • A shift in the 500hPa ridge position over the western Pacific would raise or lower the expected high by 1 to 2 degrees, directly moving the 35°C bracket probability.
  • Afternoon convective activity or a sea breeze onset before 3 p.m. local time would favor a 33°C or 34°C outcome.
  • A persistent subsidence inversion without cloud cover would favor 36°C or higher.
  • The final morning observation on July 4 before noon UTC will set the floor for the daily high already achieved by that point.

The $16,707 in total volume reflects a market that has repriced on the latest forecast but remains genuinely uncertain. The data favor 35°C as the modal outcome, but discrete temperature markets distribute probability across many brackets. The current 31.5% implied probability is mathematically reasonable for a single-degree target in a system with this much natural variance.

LINES VERDICT

Plausible Modal Outcome, Not a Lock

Taipei’s climatology and the current short-range forecast both center near 35°C for July 4, which is why this bracket leads the market. The precision requirement keeps YES well below 50%.

What the market says: At 31.5%, the market treats 35°C as the single most likely outcome while acknowledging that adjacent brackets each carry real probability. With resolution just 48 hours away, any forecast shift before the July 3 model update could reprice this contract sharply.

Key unknown: Taiwan’s Central Weather Administration forecast update on July 3 is the decisive data point. A one-degree shift in the modeled high — toward 34°C or 36°C — would transfer significant probability mass away from the 35°C bracket and move the YES price materially before resolution.

Frequently Asked Questions

It means traders estimate a roughly 1-in-3 chance Taipei's official daily high on July 4 lands at exactly 35°C, not in any neighboring temperature bracket.

NO pays if Taipei's July 4 high is anything other than 35°C — including 34°C, 36°C, or any other bracket. The NO price is 0.69, implying 68.5% probability.

Taiwan's Central Weather Administration forecast update on July 3 is the key trigger. A one-degree shift in the modeled high would reprice adjacent brackets significantly.

The market resolves on July 4, 2026 at 12:00 UTC, using official meteorological station data for Taipei's daily high temperature.

Total volume is $16,707 — below $1 million. Liquidity is $75,755, which is healthy, but thin volume means a single large trade could move the YES price sharply.

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.

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.

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?

Forecast Locks In at 35°C

If Taiwan's Central Weather Administration July 3 update holds the modeled high at 35°C with low spread, traders will concentrate probability in this bracket and push the YES price toward 40% or higher. A strong subsidence inversion without afternoon cloud cover supports this scenario. The 7-point move on July 2 shows how quickly new forecast data reprices this market.

Forecast Shifts One Degree

A 1-degree upward revision in the modeled high — toward 36°C or 37°C — would transfer the modal probability to the adjacent bracket and push 35°C YES back toward 0.20 or lower. Strengthening of the western Pacific subtropical ridge overnight July 3 is the mechanism. Taipei's urban heat island effect makes upside surprises more common than downside ones in early July.

Late Cooling Pulls High to 34°C

If afternoon convective development or an earlier-than-forecast sea breeze onset suppresses the peak temperature, the daily high could settle at 34°C. This outcome would benefit the 34°C bracket and pay NO on the 35°C contract. Historical Taipei July data shows this pattern occurs in roughly 20-25% of days when the synoptic setup is marginally supportive of convection.

Typhoon Proximity Changes Everything

A western Pacific tropical system tracking toward Taiwan in the July 3-4 window would dramatically alter the surface wind and moisture profile over Taipei. Even a distant typhoon can enhance cloud cover and suppress afternoon heating by 2 to 4 degrees, collapsing the probability of any mid-30s outcome and making the 30-32°C brackets suddenly competitive. This would reprice the entire contract structure.

Key macro factor: Early July 2026 sits in a La Nina transition period, which historically correlates with a slightly weaker subtropical ridge over the western Pacific and marginally lower summer temperature anomalies for Taiwan compared to El Nino years.

Market Timeline

Jul 2, 4:02 AM
Market Created
Jul 2, 4:02 AM
Market Opened
12:00 PM
Market Resolution

Market Comments

Probabilities shown are market-implied and not predictions or recommendations. This content is for informational purposes only.