PolymarketCheck availabilityNo KYC2% feeVerified resolution dataWell calibratedCurrent implied probability
64-65°F 46.1%+14.0ptLeader of 11 outcomesVig-adjusted: raw venue quotes summed above 100% and were normalized.
Market quality
79 / 100
High quality24h Volume
$19.8K
Liquidity
$35.9K
High liquiditySpread
1.0 pt
Tight spreadComments
0
Market data
Updated 2 minutes ago
Sep 19, 26, 7:56 AM UTCSep 21, 26, 12:00 PM UTC
Trends
0%
0%
0%
0%
0%
0%
Related Markets
Related questions for context, not a comparison of equivalent contracts.
Highest temperature in Chicago on September 22?
PolymarketHighest temperature in Chicago on September 20, 2026?
GeminiLowest temperature in Chicago on September 21?
PolymarketLowest temperature in Chicago on September 22?
PolymarketHighest temperature in Chicago on Sep 20, 2026?
KalshiLowest temperature in Chicago on Sep 20, 2026?
KalshiRules
This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Chicago O'Hare Intl Airport Station in degrees Fahrenheit on 21 Sep '26.
- The resolution source for this market will be information from NOAA, specifically the highest reading under the "Temp" column for all times on this day, available here: https://www.weather.gov/wrh/timeseries?site=kord
- This market will resolve off of the Hourly Data provided using the "Show Hourly Data" button.
- If NOAA data for the observation date is unavailable by 11:59 PM ET on the day following the observation date, the Weather Underground Daily Observations table will be used as the resolution source.
- In the event that there is no data for the observation date by 11:59 PM ET on the day following the observation date, this market will resolve to the lowest bracket.
- To toggle between Fahrenheit and Celsius, click the "Switch to US Units w/ kts" button until the relevant table displays °F.
Prediction Source Comparison
Open markets
WeatherKALSHIWhere will it rain on Sep 20, 2026?
- Miami+20.0pt99%
- Boston+4.0pt99%
- Newark+3.0pt99%
+24 more outcomes
- Total Vol
- $259.7K
- 24h Vol
- $237.4K
KALSHIHighest temperature in Los Angeles on Sep 20, 2026?
- 76° to 77°+34.0pt72%
- 75° or below-19.0pt14%
- 78° to 79°-12.0pt11%
+3 more outcomes
- Total Vol
KALSHIHighest temperature in Miami on Sep 20, 2026?
- 90° to 91°+27.0pt52.8%
- 88° to 89°+2.0pt42.6%
- 92° or above-2.0pt1.9%
+3 more outcomes
- Total Vol
KALSHIHighest temperature in Chicago on Sep 20, 2026?
- 69° to 70°+61.0pt95%
- 68° or below-18.0pt1%
- 71° to 72°-33.0pt1%
+3 more outcomes
- Total Vol
KALSHIHighest temperature in New York City on Sep 20, 2026?
- 70° or below+32.0pt92.5%
- 71° to 72°-21.0pt3.8%
- 73° to 74°-8.0pt0.9%
+3 more outcomes
- Total Vol
KALSHIHighest temperature in Atlanta on Sep 20, 2026?
- 88° to 89°+33.0pt52.3%
- 87° or below+25.0pt37.6%
- 90° to 91°-27.0pt7.3%
+3 more outcomes
- Total Vol
- Highest temperature in Seattle on Sep 20, 2026?
- Highest temperature in Tokyo on September 21?
- Where will it rain this weekend (Sep 19 - Sep 20)?
- Highest temperature in London on September 21?
- Highest temperature in Milan on September 21?
- Highest temperature in Washington DC on Sep 20, 2026?
- Highest temperature in Paris on September 21?
- Highest temperature in Tel Aviv on September 21?
- Highest temperature in Austin on Sep 20, 2026?
- Highest temperature in Philadelphia on Sep 20, 2026?
Frequently asked questions
- What are the current odds for Highest temperature in Chicago on September 21??
- Polymarket prices 64-65°F at 46% as of September 20, 2026.
- When does Highest temperature in Chicago on September 21? resolve?
- Highest temperature in Chicago on September 21? is scheduled to resolve on September 21, 2026.
- How is Highest temperature in Chicago on September 21? settled?
- Polymarket settles this market as follows: This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Chicago O'Hare Intl Airport Station in degrees Fahrenheit on 21 Sep '26.
- Where else is Highest temperature in Chicago on September 21? listed?
- The same question is also listed on Gemini, Kalshi.