Free tools for the daily temperature markets

Decode a METAR the way each exchange reads it, find any city's day on Kalshi and Polymarket in local time, and work out either exchange's fee. Free, no account.

METAR temperature decoderPaste a METAR and get the station's exact °F from its T-group, its 6-hour and 24-hour maximum and minimum groups, and what Polymarket's US and world markets would read from it.Open
Kalshi and Polymarket settlement windowsPick a city and a date: the exact hours that count toward its daily high on Kalshi and on Polymarket in local time, when Kalshi's trading opens and closes, and when results usually post.Open
Kalshi and Polymarket fee calculatorThe taker fee on any weather order at Kalshi or Polymarket, the total cost, the payout and the break-even price, with Kalshi's rounding trap.Open

Almanac shows information and tools. It never says what to buy or sell and never places an order.