Kalshi goes by the thermometer at Chicago Midway International Airport (KMDW), not O'Hare. Today's high counts from 1:00 AM Nov 1 to 12:00 AM Nov 2 CDT.
Newest official high: Sat, Oct 31, posted Nov 1, 4:20 AM CST.
Chicago so far today: the high is 57°F (the station's 6-hour high, 5:53 AM), in the 63° or below bracket. The favorite is 64° to 65° at 44¢ (Kalshi, 30 minutes late), 7° above the high so far. Trading closes at 1:00 AM CST. 7 reports from KMDW from 1:00 AM to 6:11 AM CST, between 53°F and 56°F; the latest 54°F at 5:53 AM.
| Bracket | Price | Note |
|---|---|---|
| 72° or above | 1¢ | |
| 70° to 71° | 1¢ | |
| 68° to 69° | 3¢ | |
| 66° to 67° | 13¢ | |
| 64° to 65° | 44¢ | favorite |
| 63° or below | 44¢ | high so far |
| Time | Reading |
|---|---|
| 5:53 AM | 54°F |
| 4:53 AM | 54°F |
| 3:53 AM | 53°F |
| 2:53 AM | 53°F |
| 2:24 AM | 55°F |
| 1:53 AM | 56°F |
| 1:53 AM | 55°F |
Which bracket will Chicago settle on today? For fun: no money, no orders, nothing sent to Kalshi. The market's own favorite usually wins, and your record sits beside it. See this week's leaderboard
Create a free account to play: calls on your 3 cities, your record beside the market's favorite and the model's.
Prices (30 min late) 34 min ago· Readings 18 min ago
High so far today
57°F
the station's 6-hour high at 5:53 AM, 7 reports so far
Latest reading
54°F
taken 5:53 AM, counts toward today
Trading closes in
18 h 49 min
usually settles around 7:12 AM (median of 60 days)
| Bracket | Price | Bid | Last | Waiting to trade (bid × ask) | Traded |
|---|---|---|---|---|---|
| 72° or above | 1¢ | — | 1¢ | — × 818 | 357 |
| 70° to 71° | 2¢ | — | 1¢ | — × 1,100 | 453 |
| 68° to 69° | 3¢ | 2¢ | 3¢ | 370 × 95 | 513 |
| 66° to 67° | 13¢ | 12¢ | 15¢ | 10 × 35 | 859 |
| 64° to 65°favorite | 44¢ | 43¢ | 44¢ | 32 × 50 | 1,233 |
| 63° or belowhigh so far 57° | 44¢ | 43¢ | 43¢ | 33 × 212 | 3,793 |
53°F
Favorite 52° to 53° at 95¢ · in it now
Low so far set at 3:53 AM. Same station and day as the high; closes in 18 h 49 min.
From KMDW's NWS climate reports (via the Iowa Environmental Mesonet) and Kalshi's settlements and stored prices. Facts about past days, not forecasts.
Highest hourly reading so far at Chicago O'Hare Intl Airport (KORD): 57°F at 2:51 AM.
Polymarket's highest-priced range is 64°–65° at 44¢.
Polymarket settles Chicago on KORD, not KMDW, and on the highest hourly reading, midnight to midnight local time.
Pick a number and Almanac tells you the moment the station (KMDW) reaches it: by email, and on your phone once you switch notifications on. Plus live prices in all 24 cities (these are 30minutes late), 12 weather models' forecasts for this station on the chart and in a table, whether today is running hotter or cooler than they expected, and how each model has done here.
Model record: in our test the market's prices were more accurate than the model (log loss 1.26 vs 1.48 a day ahead, 0.92 vs 1.25 on the day; lower is better).
Every report from the station today (a ), in exact whole °F. “6 h max” is the station's own highest reading over the past 6 hours, which can catch a peak between hourly reports.
| Time | Reading | 6 h max | 24 h max | Report |
|---|---|---|---|---|
| 5:53 AM | 54° | 57° | METAR KMDW 011153Z 17004KT 10SM OVC090 12/09 A3034 RMK AO2 RAE1057 SLP274 P0000 60012 70012 T01220094 10139 20117 53001 $ | |
| 4:53 AM | 54° | METAR KMDW 011053Z 00000KT 10SM -RA OVC090 12/11 A3033 RMK AO2 SLP270 P0001 T01220106 $ | ||
| 3:53 AM | 53° | METAR KMDW 010953Z 00000KT 10SM -RA OVC090 12/11 A3033 RMK AO2 SLP271 P0004 T01170106 $ | ||
| 2:53 AM | 53° | METAR KMDW 010853Z 14005KT 9SM -RA FEW050 BKN080 OVC090 12/09 A3034 RMK AO2 RAB09 TSE23 SLP272 P0007 60007 T01170094 53001 $ | ||
| 2:24 AM | 55° | SPECI KMDW 010824Z 00000KT 10SM -RA OVC060 13/08 A3033 RMK AO2 RAB09 TSE23 P0002 T01280083 $ | ||
| 1:53 AM | 56° | METAR KMDW 010753Z 14004KT 10SM TS SCT060CB OVC130 13/06 A3033 RMK AO2 TSB51 SLP270 OCNL LTGICCG S TS S MOV N T01330061 $ | ||
| 1:53 AM | 55° | METAR KMDW 010653Z 00000KT 10SM SCT060 OVC140 13/07 A3034 RMK AO2 SLP272 OCNL LTGIC DSNT SW CB DSNT SW T01280067 $ |
The official high isn't in yet. The final report goes out shortly after midnight standard time.
Not settled yet: Kalshi usually settles around 7 AM local the next morning.
Download every official high at KMDW (CSV): the NWS climate report's daily high since Jan 1, 2025, with its time, the normal and the record. Free, no account.
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