**Current meteorological guidance from multiple global and regional models points to a daily maximum of 37°C in Jeddah on August 21, driving the market’s near-certain consensus on that outcome.** Summer conditions feature a strong subtropical high, minimal cloud cover, and light to moderate westerly winds that limit marine cooling while allowing strong solar heating over the arid coastal plain. Official and ensemble forecasts show highs clustered tightly around 36–39 °C, consistent with long-term August climatology near 38 °C. The implied probability above 99 % reflects both the narrow forecast spread and the fact that resolution will rely on verified observations from Jeddah’s primary station rather than model output alone. Only an unexpected surge in low-level moisture or a localized convective outbreak could realistically pull the peak below 36 °C or push it to 38 °C or higher before evening.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedHighest temperature in Jeddah on August 21?
Highest temperature in Jeddah on August 21?
37°C 100.0%
29°C or below <1%
30°C <1%
31°C <1%
$28,510 Vol.
$28,510 Vol.
Aug 21, 2026
29°C or below
No
30°C
No
31°C
No
32°C
No
33°C
No
34°C
No
35°C
No
36°C
No
37°C
Yes
38°C
No
39°C or higher
No
37°C 100.0%
29°C or below <1%
30°C <1%
31°C <1%
$28,510 Vol.
$28,510 Vol.
Aug 21, 2026
29°C or below
$705 Vol.
No
30°C
$692 Vol.
No
31°C
$687 Vol.
No
32°C
$508 Vol.
No
33°C
$648 Vol.
No
34°C
$985 Vol.
No
35°C
$2,557 Vol.
No
36°C
$5,519 Vol.
No
37°C
$5,429 Vol.
Yes
38°C
$5,740 Vol.
No
39°C or higher
$5,040 Vol.
No
This market will resolve based on the highest temperature recorded in the 'Daily Observations' table on Weather Underground, not the figure displayed in the 'Day High & Low' summary section; in the event of any discrepancy between the two, the Daily Observations table shall be the primary resolution source not the Day High & Low section.
This market will resolve to the temperature range that contains the highest temperature recorded at the King Abdulaziz International Airport Station in degrees Celsius on 21 Aug '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the King Abdulaziz International Airport Station, available here: https://www.wunderground.com/history/daily/sa/jeddah/OEJN.
To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °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.**Current meteorological guidance from multiple global and regional models points to a daily maximum of 37°C in Jeddah on August 21, driving the market’s near-certain consensus on that outcome.** Summer conditions feature a strong subtropical high, minimal cloud cover, and light to moderate westerly winds that limit marine cooling while allowing strong solar heating over the arid coastal plain. Official and ensemble forecasts show highs clustered tightly around 36–39 °C, consistent with long-term August climatology near 38 °C. The implied probability above 99 % reflects both the narrow forecast spread and the fact that resolution will rely on verified observations from Jeddah’s primary station rather than model output alone. Only an unexpected surge in low-level moisture or a localized convective outbreak could realistically pull the peak below 36 °C or push it to 38 °C or higher before evening.
This market will resolve based on the highest temperature recorded in the 'Daily Observations' table on Weather Underground, not the figure displayed in the 'Day High & Low' summary section; in the event of any discrepancy between the two, the Daily Observations table shall be the primary resolution source not the Day High & Low section.
This market will resolve to the temperature range that contains the highest temperature recorded at the King Abdulaziz International Airport Station in degrees Celsius on 21 Aug '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the King Abdulaziz International Airport Station, available here: https://www.wunderground.com/history/daily/sa/jeddah/OEJN.
To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °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 at the King Abdulaziz International Airport Station in degrees Celsius on 21 Aug '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the King Abdulaziz International Airport Station, available here: https://www.wunderground.com/history/daily/sa/jeddah/OEJN.
To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °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.
Market Opened: Aug 19, 2026, 12:57 AM ET
Volume
$28,510End Date
Aug 21, 2026Market Opened
Aug 19, 2026, 12:57 AM ETResolution Source
https://www.wunderground.com/history/daily/sa/jeddah/OEJNResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
This market will resolve based on the highest temperature recorded in the 'Daily Observations' table on Weather Underground, not the figure displayed in the 'Day High & Low' summary section; in the event of any discrepancy between the two, the Daily Observations table shall be the primary resolution source not the Day High & Low section.
This market will resolve to the temperature range that contains the highest temperature recorded at the King Abdulaziz International Airport Station in degrees Celsius on 21 Aug '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the King Abdulaziz International Airport Station, available here: https://www.wunderground.com/history/daily/sa/jeddah/OEJN.
To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °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.**Current meteorological guidance from multiple global and regional models points to a daily maximum of 37°C in Jeddah on August 21, driving the market’s near-certain consensus on that outcome.** Summer conditions feature a strong subtropical high, minimal cloud cover, and light to moderate westerly winds that limit marine cooling while allowing strong solar heating over the arid coastal plain. Official and ensemble forecasts show highs clustered tightly around 36–39 °C, consistent with long-term August climatology near 38 °C. The implied probability above 99 % reflects both the narrow forecast spread and the fact that resolution will rely on verified observations from Jeddah’s primary station rather than model output alone. Only an unexpected surge in low-level moisture or a localized convective outbreak could realistically pull the peak below 36 °C or push it to 38 °C or higher before evening.
This market will resolve based on the highest temperature recorded in the 'Daily Observations' table on Weather Underground, not the figure displayed in the 'Day High & Low' summary section; in the event of any discrepancy between the two, the Daily Observations table shall be the primary resolution source not the Day High & Low section.
This market will resolve to the temperature range that contains the highest temperature recorded at the King Abdulaziz International Airport Station in degrees Celsius on 21 Aug '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the King Abdulaziz International Airport Station, available here: https://www.wunderground.com/history/daily/sa/jeddah/OEJN.
To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °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 at the King Abdulaziz International Airport Station in degrees Celsius on 21 Aug '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the King Abdulaziz International Airport Station, available here: https://www.wunderground.com/history/daily/sa/jeddah/OEJN.
To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °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
$28,510End Date
Aug 21, 2026Market Opened
Aug 19, 2026, 12:57 AM ETResolution Source
https://www.wunderground.com/history/daily/sa/jeddah/OEJNResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
**Current meteorological guidance from multiple global and regional models points to a daily maximum of 37°C in Jeddah on August 21, driving the market’s near-certain consensus on that outcome.** Summer conditions feature a strong subtropical high, minimal cloud cover, and light to moderate westerly winds that limit marine cooling while allowing strong solar heating over the arid coastal plain. Official and ensemble forecasts show highs clustered tightly around 36–39 °C, consistent with long-term August climatology near 38 °C. The implied probability above 99 % reflects both the narrow forecast spread and the fact that resolution will rely on verified observations from Jeddah’s primary station rather than model output alone. Only an unexpected surge in low-level moisture or a localized convective outbreak could realistically pull the peak below 36 °C or push it to 38 °C or higher before evening.
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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