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Highest temperature in Istanbul on August 21?

icon for Highest temperature in Istanbul on August 21?

Highest temperature in Istanbul on August 21?

27°C 66%

28°C 22%

26°C 13%

25°C 2.9%

Polymarket

$13,055 Vol.

27°C 66%

28°C 22%

26°C 13%

25°C 2.9%

Polymarket

$13,055 Vol.

22°C or below

$550 Vol.

<1%

23°C

$725 Vol.

<1%

24°C

$444 Vol.

<1%

25°C

$556 Vol.

3%

26°C

$4,956 Vol.

13%

27°C

$2,253 Vol.

66%

28°C

$1,313 Vol.

22%

29°C

$715 Vol.

2%

30°C

$581 Vol.

<1%

31°C

$625 Vol.

<1%

32°C or higher

$338 Vol.

<1%

This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Istanbul Airport in degrees Celsius on 21 Aug '26. The 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 To toggle between Fahrenheit and Celsius, click the "Switch to Metric Units" button until the relevant table displays °C. This market can not resolve until the first data point for the following date has been published on the resolution source. 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. Revisions to temperatures recorded 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.Trader consensus heavily favors 27°C as the highest temperature in Istanbul on August 21, reflecting converging forecasts from the Turkish State Meteorological Service, Met Office, and global models under stable high pressure, light northeast winds, and partly cloudy skies that limit peak heating. Daytime maxima are projected near 28–29°C but with observational data and recent model runs pointing to a recorded high at or below 27°C at official stations, consistent with climatological August norms of 27–30°C. Dew points around 19–21°C and minimal cloud cover further constrain intensification, while any late-day clearing or wind shifts could nudge readings toward 28°C. Market-implied probabilities incorporate these variables ahead of final official verification.

This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Istanbul Airport in degrees Celsius on 21 Aug '26.

The 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

To toggle between Fahrenheit and Celsius, click the "Switch to Metric Units" button until the relevant table displays °C.

This market can not resolve until the first data point for the following date has been published on the resolution source.

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.

Revisions to temperatures recorded 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.
Volume
$13,055
End Date
Aug 21, 2026
Market Opened
Aug 19, 2026, 12:57 AM ET
This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Istanbul Airport in degrees Celsius on 21 Aug '26. The 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 To toggle between Fahrenheit and Celsius, click the "Switch to Metric Units" button until the relevant table displays °C. This market can not resolve until the first data point for the following date has been published on the resolution source. 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. Revisions to temperatures recorded 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.
This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Istanbul Airport in degrees Celsius on 21 Aug '26. The 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 To toggle between Fahrenheit and Celsius, click the "Switch to Metric Units" button until the relevant table displays °C. This market can not resolve until the first data point for the following date has been published on the resolution source. 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. Revisions to temperatures recorded 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.Trader consensus heavily favors 27°C as the highest temperature in Istanbul on August 21, reflecting converging forecasts from the Turkish State Meteorological Service, Met Office, and global models under stable high pressure, light northeast winds, and partly cloudy skies that limit peak heating. Daytime maxima are projected near 28–29°C but with observational data and recent model runs pointing to a recorded high at or below 27°C at official stations, consistent with climatological August norms of 27–30°C. Dew points around 19–21°C and minimal cloud cover further constrain intensification, while any late-day clearing or wind shifts could nudge readings toward 28°C. Market-implied probabilities incorporate these variables ahead of final official verification.

This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Istanbul Airport in degrees Celsius on 21 Aug '26.

The 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

To toggle between Fahrenheit and Celsius, click the "Switch to Metric Units" button until the relevant table displays °C.

This market can not resolve until the first data point for the following date has been published on the resolution source.

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.

Revisions to temperatures recorded 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.
Volume
$13,055
End Date
Aug 21, 2026
Market Opened
Aug 19, 2026, 12:57 AM ET
This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Istanbul Airport in degrees Celsius on 21 Aug '26. The 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 To toggle between Fahrenheit and Celsius, click the "Switch to Metric Units" button until the relevant table displays °C. This market can not resolve until the first data point for the following date has been published on the resolution source. 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. Revisions to temperatures recorded 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.

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Frequently Asked Questions

"Highest temperature in Istanbul on August 21?" is a prediction market on Polymarket with 11 possible outcomes where traders buy and sell shares based on what they believe will happen. The current leading outcome is "27°C" at 66%, followed by "28°C" at 22%. Prices reflect real-time crowd-sourced probabilities. For example, a share priced at 66¢ implies that the market collectively assigns a 66% chance to that outcome. These odds shift continuously as traders react to new developments and information. Shares in the correct outcome are redeemable for $1 each upon market resolution.

As of today, "Highest temperature in Istanbul on August 21?" has generated $13.1K in total trading volume since the market launched on Aug 19, 2026. This level of trading activity reflects strong engagement from the Polymarket community and helps ensure that the current odds are informed by a deep pool of market participants. You can track live price movements and trade on any outcome directly on this page.

To trade on "Highest temperature in Istanbul on August 21?," browse the 11 available outcomes listed on this page. Each outcome displays a current price representing the market's implied probability. To take a position, select the outcome you believe is most likely, choose "Yes" to trade in favor of it or "No" to trade against it, enter your amount, and click "Trade." If your chosen outcome is correct when the market resolves, your "Yes" shares pay out $1 each. If it's incorrect, they pay out $0. You can also sell your shares at any time before resolution if you want to lock in a profit or cut a loss.

The current frontrunner for "Highest temperature in Istanbul on August 21?" is "27°C" at 66%, meaning the market assigns a 66% chance to that outcome. The next closest outcome is "28°C" at 22%. These odds update in real-time as traders buy and sell shares, so they reflect the latest collective view of what's most likely to happen. Check back frequently or bookmark this page to follow how the odds shift as new information emerges.

The resolution rules for "Highest temperature in Istanbul on August 21?" define exactly what needs to happen for each outcome to be declared a winner — including the official data sources used to determine the result. You can review the complete resolution criteria in the "Rules" section on this page above the comments. We recommend reading the rules carefully before trading, as they specify the precise conditions, edge cases, and sources that govern how this market is settled.