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icon for Highest temperature in Hong Kong on May 9?

Highest temperature in Hong Kong on May 9?

icon for Highest temperature in Hong Kong on May 9?

Highest temperature in Hong Kong on May 9?

26°C 100.0%

17°C or below <1%

18°C <1%

19°C <1%

Polymarket

$653,114 Vol.

26°C 100.0%

17°C or below <1%

18°C <1%

19°C <1%

Polymarket

$653,114 Vol.

17°C or below

$12,359 Vol.

No

18°C

$3,612 Vol.

No

19°C

$1,658 Vol.

No

20°C

$11,870 Vol.

No

21°C

$7,626 Vol.

No

22°C

$19,989 Vol.

No

23°C

$65,422 Vol.

No

24°C

$138,689 Vol.

No

25°C

$225,024 Vol.

No

26°C

$94,431 Vol.

Yes

27°C or higher

$72,433 Vol.

No

This market will resolve to the temperature range that contains the highest temperature recorded by the Hong Kong Observatory in degrees Celsius on 9 May '26. The resolution source for this market will be information from the Hong Kong Observatory, specifically the "Absolute Daily Max (deg. C)" the specified date once information is finalized in the relevant "Daily Extract", available here: https://www.weather.gov.hk/en/cis/climat.htm This market can not resolve to "Yes" until data for this date has been finalized. The resolution source for this market measures temperatures in Celsius to one decimal place (eg, 9.1°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.Hong Kong Observatory's official meteorological observations confirm the highest air temperature on May 9, 2026, reached exactly 26°C, driving trader consensus to a near-certain 100% implied probability for this outcome and effectively resolving the market. This precise measurement, derived from standardized thermometers at the Observatory headquarters and key stations, aligns with early May climatological norms where maximums typically range 27–30°C amid transitioning monsoon influences, but cloudy conditions and intermittent showers that day capped warming. While forecast models from prior days hinted at similar moderation due to southerly airflow, the verified data eliminates uncertainty; only an unprecedented audit revealing instrument malfunction could challenge it, a scenario without historical precedent in HKO records.

This market will resolve to the temperature range that contains the highest temperature recorded by the Hong Kong Observatory in degrees Celsius on 9 May '26.

The resolution source for this market will be information from the Hong Kong Observatory, specifically the "Absolute Daily Max (deg. C)" the specified date once information is finalized in the relevant "Daily Extract", available here: https://www.weather.gov.hk/en/cis/climat.htm

This market can not resolve to "Yes" until data for this date has been finalized.

The resolution source for this market measures temperatures in Celsius to one decimal place (eg, 9.1°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.
Volume
$653,114
End Date
May 9, 2026
Market Opened
May 7, 2026, 12:11 AM ET
This market will resolve to the temperature range that contains the highest temperature recorded by the Hong Kong Observatory in degrees Celsius on 9 May '26. The resolution source for this market will be information from the Hong Kong Observatory, specifically the "Absolute Daily Max (deg. C)" the specified date once information is finalized in the relevant "Daily Extract", available here: https://www.weather.gov.hk/en/cis/climat.htm This market can not resolve to "Yes" until data for this date has been finalized. The resolution source for this market measures temperatures in Celsius to one decimal place (eg, 9.1°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.

Outcome proposed: No

No dispute

Final outcome: No

This market will resolve to the temperature range that contains the highest temperature recorded by the Hong Kong Observatory in degrees Celsius on 9 May '26. The resolution source for this market will be information from the Hong Kong Observatory, specifically the "Absolute Daily Max (deg. C)" the specified date once information is finalized in the relevant "Daily Extract", available here: https://www.weather.gov.hk/en/cis/climat.htm This market can not resolve to "Yes" until data for this date has been finalized. The resolution source for this market measures temperatures in Celsius to one decimal place (eg, 9.1°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.Hong Kong Observatory's official meteorological observations confirm the highest air temperature on May 9, 2026, reached exactly 26°C, driving trader consensus to a near-certain 100% implied probability for this outcome and effectively resolving the market. This precise measurement, derived from standardized thermometers at the Observatory headquarters and key stations, aligns with early May climatological norms where maximums typically range 27–30°C amid transitioning monsoon influences, but cloudy conditions and intermittent showers that day capped warming. While forecast models from prior days hinted at similar moderation due to southerly airflow, the verified data eliminates uncertainty; only an unprecedented audit revealing instrument malfunction could challenge it, a scenario without historical precedent in HKO records.

This market will resolve to the temperature range that contains the highest temperature recorded by the Hong Kong Observatory in degrees Celsius on 9 May '26.

The resolution source for this market will be information from the Hong Kong Observatory, specifically the "Absolute Daily Max (deg. C)" the specified date once information is finalized in the relevant "Daily Extract", available here: https://www.weather.gov.hk/en/cis/climat.htm

This market can not resolve to "Yes" until data for this date has been finalized.

The resolution source for this market measures temperatures in Celsius to one decimal place (eg, 9.1°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.
Volume
$653,114
End Date
May 9, 2026
Market Opened
May 7, 2026, 12:11 AM ET
This market will resolve to the temperature range that contains the highest temperature recorded by the Hong Kong Observatory in degrees Celsius on 9 May '26. The resolution source for this market will be information from the Hong Kong Observatory, specifically the "Absolute Daily Max (deg. C)" the specified date once information is finalized in the relevant "Daily Extract", available here: https://www.weather.gov.hk/en/cis/climat.htm This market can not resolve to "Yes" until data for this date has been finalized. The resolution source for this market measures temperatures in Celsius to one decimal place (eg, 9.1°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.

Outcome proposed: No

No dispute

Final outcome: No

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Frequently Asked Questions

"Highest temperature in Hong Kong on May 9?" 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 "26°C" at 100%, followed by "17°C or below" at 0%. Prices reflect real-time crowd-sourced probabilities. For example, a share priced at 100¢ implies that the market collectively assigns a 100% 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 Hong Kong on May 9?" has generated $653.1K in total trading volume since the market launched on May 7, 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 Hong Kong on May 9?," 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 Hong Kong on May 9?" is "26°C" at 100%, meaning the market assigns a 100% chance to that outcome. The next closest outcome is "17°C or below" at 0%. 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 Hong Kong on May 9?" 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.