TOTAL VOLUME:

$134.1b

24H VOL:

$141,541,542

24H TRANSACTIONS:

2,388,728,490

OPEN INTEREST:

$1,440,096,988

406,065

Markets across

30,522

events

MATCHED EVENTS:

2,692

PLATFORM COVERAGE:

5

Polymarket:

39%

VS.

Kalshi:

61%

BETA
Dashboards
Insights
Indices
Tour
All
Trending
Breaking
New
Ending Soon
Politics
Sports
Crypto
Companies
Elections
Financials
Economics
Other
Entertainment
Science and Technology
Highest temperature in Helsinki on June 30?
polymarket

Highest temperature in Helsinki on June 30?

Volume:
$107,954

26°C

 - Polymarket

26°C - Polymarket

1W

News

Positive

Negative

Neutral

Hover marker for details

Vol.

·

Resolved Jun 30, 2026

Closed: Jun 30, 8:00 AM EST

polymarket

Polymarket

View
Outcome
Trade
Chance %
Price
Spread
Liquidity
Volume
24h
7d
Open Interest
Ends in
Result
polymarket

26°C

View
100%
Yes 100¢No 0¢
0.1¢
N/A
$13,040
N/A
N/A
N/A
Settled
Yes
polymarket

24°C

View
0%
Yes 0¢No 100¢
—
N/A
$29,119
N/A
N/A
N/A
Settled
No
polymarket

20°C or below

View
0%
Yes 0¢No 100¢
—
N/A
$16,738
N/A
N/A
N/A
Settled
No
polymarket

21°C

View
0%
Yes 0¢No 100¢
—
N/A
$13,660
N/A
N/A
N/A
Settled
No
polymarket

27°C

View
0%
Yes 0¢No 100¢
—
N/A
$13,357
N/A
N/A
N/A
Settled
No
polymarket

25°C

View
0%
Yes 0¢No 100¢
—
N/A
$6,825
N/A
N/A
N/A
Settled
No
polymarket

22°C

View
0%
Yes 0¢No 100¢
—
N/A
$3,939
N/A
N/A
N/A
Settled
No
polymarket

28°C

View
0%
Yes 0¢No 100¢
—
N/A
$3,907
N/A
N/A
N/A
Settled
No
polymarket

29°C

View
0%
Yes 0¢No 100¢
—
N/A
$3,237
N/A
N/A
N/A
Settled
No
polymarket

23°C

View
0%
Yes 0¢No 100¢
—
N/A
$2,779
N/A
N/A
N/A
Settled
No
polymarket

30°C or higher

View
0%
Yes 0¢No 100¢
—
N/A
$1,350
N/A
N/A
N/A
Settled
No
Total markets: 11

Description

This market will resolve to the temperature range that contains the highest temperature recorded at the Helsinki Vantaa Airport Station in degrees Celsius on 30 Jun '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 Helsinki Vantaa Airport Station, available here: https://www.wunderground.com/history/daily/fi/vantaa/EFHK. 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.

Polymarket

This market will resolve to the temperature range that contains the highest temperature recorded at the Helsinki Vantaa Airport Station in degrees Celsius on 30 Jun '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 Helsinki Vantaa Airport Station, available here: https://www.wunderground.com/history/daily/fi/vantaa/EFHK. 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.

Frequently asked questions

On Polymarket, the Helsinki temperature market dashboard tracks real-time odds and trading activity for the highest temperature forecast in Helsinki on June 30. The interface displays current market prices, historical price movements, and 24-hour trading volume, allowing traders to monitor how the market reprices as new weather data and forecasts emerge. This market aggregates the collective predictions of traders betting on whether the peak temperature will reach specific thresholds, with odds updating continuously as positions are bought and sold.

Prediction market odds often diverge from traditional meteorological forecasts because they incorporate real-time trader sentiment and risk appetite alongside expert models. While meteorologists publish deterministic temperature ranges based on atmospheric data, this market reflects what traders believe will actually occur, sometimes pricing in tail risks or consensus shifts faster than official updates. Comparing the implied probability here to published forecasts from national weather services can reveal whether the market is pricing optimistically or conservatively relative to expert opinion.

This market resolves around Jun 30, 2026, once the highest temperature recorded in Helsinki on June 30 is verified and finalized. The outcome is confirmed against credible public sources, such as official meteorological records from Finland's national weather authority. Once the actual peak temperature is published and matches one of the market's outcome brackets, traders holding the correct shares receive their payout and the market closes.

Major weather pattern shifts, updated seasonal forecasts, and real-time atmospheric data releases can all trigger significant repricing. Tropical or polar air mass movements, jet stream positioning, and anomalies in the North Atlantic Oscillation may influence June conditions in the Nordic region. Additionally, as the event date approaches, actual June temperatures in nearby regions and early-month Helsinki readings will sharpen trader expectations. Any revision to long-range climate outlooks or sudden weather alerts could accelerate market moves in either direction.