TOTAL VOLUME:
$134b
24H VOL:
$107,351,958
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,416,970,024
400,720
Markets across
30,097
events
MATCHED EVENTS:
2,633
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: Jul 2, 1:00 AM EST
Kalshi
This event group asks what the highest temperature in Atlanta will be on July 2, 2026. Kalshi's market resolves to Yes for essentially all temperature outcomes (below 93°F through above 100°F), while Polymarket offers granular temperature range buckets (89°F or below, 90-91°F, 92-93°F, etc., up to 108°F or higher). The core question is identical, but the resolution structures and sources differ significantly.
This market will resolve to the temperature range that contains the highest temperature recorded at the Hartsfield-Jackson International Airport Station in degrees Fahrenheit on 2 Jul '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 Hartsfield-Jackson International Airport Station, available here: https://www.wunderground.com/history/daily/us/ga/atlanta/KATL. 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 Fahrenheit (eg, 21°F). 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.
Resolution is determined by the maximum temperature recorded at Atlanta on July 1, 2026, according to the National Weather Service's Climatological Report (Daily), accessible via the NWS Atlanta office website under Observed Weather for Atlanta, GA. The event resolves to the temperature range bracket that contains the official NWS reading: 92°F or below, 93-94°F, 95-96°F, 97-98°F, 99-100°F, or 101°F and above. Traders should rely exclusively on the official NWS Climatological Report (Daily) as the final authoritative source, as preliminary NWS data and third-party weather services may contain rounding or conversion differences. The latest version of NWS data for the specified date should be used, accounting for varying update frequencies across reporting periods.
Polymarket and Kalshi may show different odds on the same temperature outcome due to contract design, liquidity distribution, and trader composition. Polymarket and Kalshi can show different implied probabilities for the same outcome because of liquidity, fee structure, participant mix, and how each venue defines the contract. Polymarket structures its contracts around binary thresholds (for example, whether the high exceeds 100°F), while Kalshi offers granular bands (such as 106–107°F ranges), creating distinct pricing incentives. Liquidity pools vary by platform, so large trades move prices differently. Regional trader preferences and platform-specific fee structures also influence how quickly prices adjust to new information. Savvy traders monitor both venues to spot arbitrage opportunities or to gauge which platform's participants hold stronger conviction.
Weather pattern shifts, updated seasonal forecasts, and real-time atmospheric data will drive price movement in this market. Major weather system developments—such as a cold front or high-pressure dome—can significantly alter expectations for July 2 temperatures. Historical heat waves, climate anomalies, or unusual jet-stream positioning may also influence trader positioning. News of equipment failures at weather stations or data revisions could trigger repricing. As July 2 approaches, intraday forecasts become more precise, typically narrowing the range of likely outcomes and concentrating trading volume around the most probable temperature bands. Traders often increase activity in the final days as uncertainty decreases and conviction hardens.