Tech & ScienceCloses · in 11 hours$508.5 volumePart of: Highest temperature in Shanghai on November 15? →

Will the highest temperature in Shanghai be 20°C on November 15?

Gotcha risk

Low

0 of 4 factors flagged

Watch for: This market relies on strictly defined, deterministic METAR weather reports from a specific station (Shanghai Pudong International Airport, ZSPD) provided via a direct Aviation Weather Center API link.

Read the full assessment

This market relies on strictly defined, deterministic METAR weather reports from a specific station (Shanghai Pudong International Airport, ZSPD) provided via a direct Aviation Weather Center API link. The rules explicitly outline how to read the data, down to the exact T-group remark parsing, tie-breaking, standard half-up rounding rules, timezone conversion, handling of missing data, and fallback sources. The potential unexpected clauses are standard technical contingencies, such as excluding SPECI reports, default resolution to the lowest bracket if no data is published, and a short correction window for technical data corruption.

Resolver
Low
Timing
Low
Wording
Low
Exceptions
Low

AI-generated analysis · google/gemini-3.7-flash ·

Current price

26%

chance
Yes26¢
No75¢
20°C · Yes · 1MO 32.5 H 33.0 L 23.5 C 25.5−7.0 (−21.5%)

Why it moved

No big moves in the last 7 days.

Resolution rules

This market will resolve to the temperature range that contains the highest temperature reported at Shanghai Pudong International Airport (ZSPD) on 15 Nov '26. The qualifying value is the highest temperature reported in the hourly temperature remark of any routine (METAR) observation for Shanghai Pudong International Airport (ZSPD) on that date, in tenths of a degree Celsius as reported. A report whose line begins with SPECI is a special observation and does not count. Every other report is routine, including one issued off the nominal hour and one that carries no METAR or SPECI label. For How to Read the METAR Report, see: https://polymarket-upload.s3.us-east-2.amazonaws.com/market_products/Weather/How+to+Read+the+METAR+Report.pdf The hourly temperature remark is the group beginning with the letter T followed by exactly eight digits. After the T, one digit for sign (0 positive, 1 negative) and three for tenths of a degree Celsius give the temperature; the following four are the dew point and are not used. T01390133 is 13.9°C; T10171022 is −1.7°C. If a routine observation does not carry the hourly temperature remark, the temperature group in the body of that observation governs for that observation, in whole degrees Celsius as reported. It appears as temperature and dew point separated by a slash, with M marking a negative value: 18/12 is 18°C; M11/M17 is −11°C. An observation that reports no temperature in either place is disregarded. Each market in this event states its range in whole degrees Celsius. The qualifying value is rounded to the nearest whole degree, with a value ending in exactly half rounded up to the next higher whole degree, and that whole Celsius value determines which range contains it. For example, 13.9°C counts as 14°C; 17.4°C counts as 17°C; 16.5°C counts as 17°C; −1.7°C counts as −2°C; −8.5°C counts as −8°C. An observation counts if its time stamp, converted to the station's local time (including any daylight-saving shift in effect), falls on the observation date. This market will resolve at the issuance of the first METAR observation for the station on the day following the observation date or by 11:59 PM ET on the day following the observation date, whichever comes first. Resolution is determined from the observations the resolution source shows for the observation date. In the event that the Aviation Weather Center has published no routine observation reporting a temperature for the observation date by 11:59 PM ET on the day following the observation date, the Weather Underground Daily Observations table will be used as the resolution source. In the event that neither source has published data sufficient to determine a temperature for the observation date by 11:59 PM ET on the day following the observation date, this market will resolve to the lowest bracket. The report the resolution source shows for a given observation time is the one that counts, whether or not it is marked as a correction (COR). Changes to observations within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered. Where the first routine observation for the following date is published before that deadline, resolution is determined from a read taken after it. Where it is not, resolution is determined from a read taken at that deadline. In the case that the Resolution Source publishes data, sufficient to settle a Market, that is clearly erroneous and the result of technical or operational error, or of unauthorized interference with the Resolution Source or its data, the Market may remain open for a period of up to seven (7) calendar days (ET) from the time of the original release, in anticipation of a correction by the Resolution Source. If the Resolution Source publishes a corrected value within that period, that value will be eligible for resolution. If no corrected value is published within that period, Polymarket will issue a Clarification to determine whether the originally published value may be eligible for resolution, or whether other action is required to preserve the orderly functioning of the Market. The resolution source for this market will be the routine observations for Shanghai Pudong International Airport (ZSPD) published here: https://aviationweather.gov/api/data/metar?ids=ZSPD&format=raw&date=2026-11-15T19:00:00Z&hours=30

Market explained

This market measures whether the rounded maximum temperature reported at Shanghai Pudong International Airport on November 15, 2026, is 20°C.

How it resolves

The market resolves to Yes if the highest temperature reported in routine (METAR) observations for Shanghai Pudong International Airport (ZSPD) on November 15, 2026, rounds to 20°C. Qualifying values come from the 8-digit T-group hourly remark in tenths of a degree Celsius, or from the body temperature group in whole degrees if the remark is absent. Values are rounded to the nearest whole degree, with 0.5 rounding up. Special observations (SPECI) and observations without a temperature are excluded. The market resolves to No if the rounded highest temperature is any value other than 20°C. If the primary source publishes no routine observations by 11:59 PM ET on the following day, the Weather Underground Daily Observations table is used as a fallback. If neither source publishes sufficient data by that deadline, the market resolves to the lowest bracket. Aviation Weather Center METAR reports decide the outcome.

Resolution source

Aviation Weather Center

AI-generated analysis · google/gemini-3.7-flash ·