Official observations from the Turkish State Meteorological Service (MGM) stations across Istanbul confirm the highest temperature reached 15°C midday under clear skies and light southerly winds around 12 km/h, aligning with forecast model consensus from ECMWF and GFS predicting limited warming in a stable high-pressure regime. Current evening readings show cooling toward 10°C post-sunset (around 19:45 local time), solidifying trader consensus at 100% implied probability for 15°C as the daily maximum per market resolution criteria. Realistic challenges include rare post-verification upward adjustments from peripheral stations or microclimate spikes, though uniform data trends make this improbable; final MGM daily summary expected within 24 hours.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedHighest temperature in Istanbul on April 19?
15°C 100.0%
9°C or below <1%
10°C <1%
11°C <1%
$60,223 Vol.
$60,223 Vol.
9°C or below
No
10°C
No
11°C
No
12°C
No
13°C
No
14°C
No
15°C
Yes
16°C
No
17°C
No
18°C
No
19°C or higher
No
15°C 100.0%
9°C or below <1%
10°C <1%
11°C <1%
$60,223 Vol.
$60,223 Vol.
9°C or below
No
10°C
No
11°C
No
12°C
No
13°C
No
14°C
No
15°C
Yes
16°C
No
17°C
No
18°C
No
19°C or higher
No
The resolution source for this market will be information from NOAA, specifically the highest reading under the "Temp" column on the specified date once information is finalized for all hours on that date, available here: https://www.weather.gov/wrh/timeseries?site=LTFM
To toggle between Fahrenheit and Celsius, click the "Switch to Metric Units" button until the relevant table displays °C.
This market can not resolve to "Yes" until data for this date has been finalized.
The resolution source for this market measures temperatures to whole degrees Celsius (eg, 9°C). Thus, this is the level of precision that will be used when resolving the market.
Any revisions to temperatures recorded after data is finalized for this market's timeframe will not be considered for this market's resolution.
Market Opened: Apr 17, 2026, 12:37 AM ET
Resolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
The resolution source for this market will be information from NOAA, specifically the highest reading under the "Temp" column on the specified date once information is finalized for all hours on that date, available here: https://www.weather.gov/wrh/timeseries?site=LTFM
To toggle between Fahrenheit and Celsius, click the "Switch to Metric Units" button until the relevant table displays °C.
This market can not resolve to "Yes" until data for this date has been finalized.
The resolution source for this market measures temperatures to whole degrees Celsius (eg, 9°C). Thus, this is the level of precision that will be used when resolving the market.
Any revisions to temperatures recorded after data is finalized for this market's timeframe will not be considered for this market's resolution.
Resolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
Official observations from the Turkish State Meteorological Service (MGM) stations across Istanbul confirm the highest temperature reached 15°C midday under clear skies and light southerly winds around 12 km/h, aligning with forecast model consensus from ECMWF and GFS predicting limited warming in a stable high-pressure regime. Current evening readings show cooling toward 10°C post-sunset (around 19:45 local time), solidifying trader consensus at 100% implied probability for 15°C as the daily maximum per market resolution criteria. Realistic challenges include rare post-verification upward adjustments from peripheral stations or microclimate spikes, though uniform data trends make this improbable; final MGM daily summary expected within 24 hours.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated

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