TOTAL VOLUME:
$134.1b
24H VOL:
$133,388,117
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,436,095,462
405,232
Markets across
30,526
events
MATCHED EVENTS:
2,693
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: Aug 24, 2:59 AM EST
Kalshi
This event tracks whether San Diego will experience consecutive days of high temperatures during a specific week. It focuses on the number of days in a row where the average temperature exceeds a set threshold, providing insight into potential heat patterns.
The event evaluates whether San Diego experiences a specified number of consecutive days with average temperatures strictly above 90°F during the week of August 18–24, 2026. Each market corresponds to a different minimum streak length (2, 3, 4, 5, or 6+ days). A day qualifies only if its average temperature—calculated as the arithmetic mean of hourly readings from 12:00 AM to 11:59 PM local time at KSAN, rounded to the nearest whole degree—exceeds 90°F. Exactly 90°F does not qualify. Only days within the specified week count toward a streak, and any day with fewer than 18 reported hourly values breaks the streak. Data from The Weather Company, as published at the expiration time, will determine the outcome, with later revisions disregarded.
On Kalshi, the current odds reflect trader sentiment about the likelihood of consecutive hot days. Analyst forecasts from weather services often provide a complementary view, incorporating long-range climate models and historical trends. While prediction markets can react quickly to new data, such as sudden shifts in atmospheric patterns, analyst reports may offer more detailed explanations of expected temperature trends. Comparing both sources helps identify potential discrepancies and gauge market confidence in an extended heat period.
This market resolves around Aug 25, 2026, with the outcome confirmed once the event is verifiable from credible public reporting. The final determination will be based on official meteorological data for the specified week, confirming whether the average temperature in San Diego reached above 90°F for the necessary consecutive days.
Several factors could influence this market before Aug 25, 2026. Updates from major weather institutions, including revised forecasts or early warnings about persistent high-pressure systems, may shift trader expectations. Sudden changes in oceanic temperatures, such as El Niño developments, can also impact regional weather patterns. Additionally, geopolitical events that affect local energy use or urban heat islands might subtly influence daily averages. Traders will monitor these signals closely as the summer progresses.