Today's High & Low Temperatures

Kalshi uses one NWS/ASOS station per city, usually an airport. New York uses KNYC (Central Park), Chicago uses KMDW (Midway) and Los Angeles uses KLAX. Each city card on this page lists its settlement stations and which platforms use them.

The high shown here is the highest temperature the station has reported so far in its temperature day. Kalshi's daily rules name The Weather Company first, then the National Weather Service, for the official high or low of the station's NWS climate location; Polymarket US settles on the NWS Daily Climate Report (CLI). The ForecastEx contracts on Robinhood and IBKR settle on the Weather Underground Daily Observations table for the station, and Polymarket settles on NOAA station data with a Weather Underground fallback. Each station shows its climate-report source when it has one. Temperature data and rounding

The NWS CLI (Daily Climate Report) is the official daily weather summary the National Weather Service publishes for major stations. It includes the official daily high and low, precipitation and departures from normal. Polymarket US settles on CLI values, and minuteTemp tracks the CLI for Kalshi stations as the official NWS record of the high and low Kalshi's rules refer to. Market settlement rules

Kalshi's daily temperature rules name The Weather Company as the first source, then the National Weather Service, for the official maximum or minimum at the station's NWS climate location (for example CLINYC for Central Park). The first non-preliminary value counts, and contracts resolve the morning after the trading day. Market settlement rules

Model spread is the gap between the highest and lowest forecast high across all models for a station. A tight spread (under 2°F) means the models agree; a wide spread (over 4°F) signals uncertainty, which often puts more market brackets in play. Forecast models

minuteTemp compares up to 20 forecast models, including HRRR, GFS, ECMWF, NAM, NBM, ICON and regional models. The consensus high and low is the average across the models available for each station, which reduces any single model's bias. Forecast models

This page refreshes every 60 seconds. How often a station reports depends on the station: every minute, every 5 minutes or about hourly, as the badge on each station row shows. New model runs arrive through the day, typically every 1 to 6 hours depending on the model.

The observed high and low are the actual readings from the station's sensor so far today. The consensus forecast is the average predicted high and low across forecast models. Comparing the two shows whether the day is running ahead of or behind the forecast.