19°C

Full rules

As written on Polymarket for “Will the highest temperature in Istanbul be 19°C on October 13?”.

1. §1This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Istanbul Airport in degrees Celsius on 13 Oct '26.
2. §2The resolution source for this market will be information from NOAA, specifically the highest reading under the "Temp" column for all times on this day, available here: https://www.weather.gov/wrh/timeseries?site=LTFM
3. §3If NOAA data for the observation date is unavailable 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.
4. §4In the event that there is no data for the observation date by 11:59 PM ET on the day following the observation date, this market will resolve to the lowest bracket.
5. §5To toggle between Fahrenheit and Celsius, click the "Switch to Metric Units" button until the relevant table displays °C.
6. §6This market will resolve once the first data point for the following date has been published on the resolution source, or by 11:59 PM ET on the day following the observation date, whichever comes first.
7. §7The resolution source for this market measures temperatures to whole degrees Celsius (eg, 9°C).