# minuteTemp

> Live, minute-level temperature data for the weather stations that settle daily and hourly temperature prediction markets on Kalshi, Polymarket, Polymarket US, Robinhood, IBKR (ForecastEx) and Coinbase, with 20 forecast models, live odds, and REST and WebSocket APIs. 73 cities.

minuteTemp is for prediction-market traders and trading bots. It shows each market's settlement station as the market reads it, the running high and low, forecasts, and how each platform settles, so traders can see where a market is heading before the official number is published.

## Coverage

- 73 cities and 78 settlement stations; 23 stations report every minute.
- Kalshi: 24 cities with daily high and low markets, and 4 hourly markets on the Kalshi Weather Index. Coinbase lists the same Kalshi markets.
- Polymarket: 53 cities. Polymarket US: 6 cities.
- ForecastEx contracts on Robinhood (23 cities) and IBKR (31 cities).

## Pricing

- Free ($0): For casual weather watchers and lead-gen exploration. 3-min delayed UI updates, 1 day of history.
- UI ($14.99/mo): For fast, ad-free dashboards without external API complexity. 1-min UI updates, 3 days of history.
- Starter ($29.99/mo): For individual traders who want API access and live workflows. 1-min UI updates, API 15 req/min, 7 days of history.
- Pro ($89.99/mo): For serious API users, automation, and team workflows. 1-min UI updates, API 100 req/min, 30 days of history.

## Settlement rules (as of 2026-10-19)

- Kalshi: Daily high and low settle on the station's NWS climate record (the CLI report) as published by The Weather Company, then the National Weather Service: whole °F, the NWS climate day, midnight to midnight local standard time (1 AM to 1 AM during daylight saving time). Settles once the value is published, usually 3 to 12 hours after midnight.
- Kalshi hourly: Settles on the Kalshi Weather Index, a weighted index of several airport stations, not one station: the last official index minute at or before the top of the hour, looking back at most 60 minutes, to 0.01 °F. If the hour has no official minute, Kalshi's market outcome review decides it.
- Coinbase: Lists Kalshi's daily and hourly markets under the same tickers and order book; they settle by Kalshi's rules, the daily markets on the station's climate record and the hourly markets on the Kalshi Weather Index.
- Polymarket: Settles on NOAA's weather.gov timeseries for the station: the highest (or lowest) reading of the local calendar day, from the hourly data in whole °F for US stations and every reading in whole °C elsewhere. Weather Underground's Daily Observations table is the fallback, and the source for Taipei, Jinan and Zhengzhou (whole °C).
- Polymarket US: Settles on the NWS Daily Climate Report (CLI) for the station: whole °F, the NWS climate day, midnight to midnight local standard time (1 AM to 1 AM during daylight saving time). Usually the next morning, around 8 AM ET.
- ForecastEx: Daily high (UH) and low (UL) contracts settle on Weather Underground's Daily Observations table for one airport station: the highest or lowest reading of the local calendar day, whole °F, with strikes as thresholds 1 °F apart. International daily highs (SH) use the same table in whole °C and have no low.
- Robinhood: A broker listing ForecastEx contracts, not Kalshi's: the daily UH/UL contracts settle by the ForecastEx rule. Hourly HRU contracts settle each hour T, Central Time, on the last Weather Underground observation after T minus 60 minutes and up to T, whole °F.
- IBKR: Lists the ForecastEx daily contracts, including the international SH highs, plus Kalshi daily highs in 7 cities, which settle by Kalshi's rules.

Each city page (/market/<city>) states the station, source, rounding and day window per platform.

## API

- [API overview](https://minutetemp.com/api.md): base URL, authentication, rate limits, every endpoint and WebSocket channel.
- [OpenAPI spec (JSON)](https://api.minutetemp.com/v1/openapi.json): REST API under https://api.minutetemp.com/api/v1/, API key in the X-API-Key header. Also as [YAML](https://api.minutetemp.com/v1/openapi.yaml).
- [AsyncAPI spec](https://api.minutetemp.com/v1/asyncapi.yaml): WebSocket channels /ws/api/1m and /ws/api/5m; get a ticket from POST /api/v1/ws-ticket.

## Docs

- [Market Settlement](https://minutetemp.com/docs/market-settlement.md): How temperature prediction markets settle — data sources, timing, and resolution rules for Kalshi, Polymarket, Polymarket US, and the ForecastEx contracts on Robinhood and IBKR.
- [How Kalshi Hourly Temperature Markets Settle: The Kalshi Weather Index Explained](https://minutetemp.com/docs/kalshi-weather-index.md): How Kalshi hourly temperature markets settle on the Kalshi Weather Index: member stations, weights, offsets, quorum, official minutes and the settlement minute.
- [Temperature Data Sources](https://minutetemp.com/docs/temperature-data.md): How minuteTemp collects and processes real-time temperature observations from METAR, NWS, and Weather Underground.
- [NWS Data](https://minutetemp.com/docs/nws-data.md): How minuteTemp integrates National Weather Service forecast and observation data.
- [Forecast Models](https://minutetemp.com/docs/forecast-models.md): Overview of the 20 forecast models compared on minuteTemp — GFS, HRRR, NAM, ECMWF, and more.
- [Oracle Scores](https://minutetemp.com/docs/oracle-scores.md): How minuteTemp Oracle Scores work — methodology for ranking forecast model accuracy using MAE, bias, and ASOS ground truth.
- [Reading the Dashboard](https://minutetemp.com/docs/reading-dashboard.md): How to read and interpret the minuteTemp dashboard — charts, indicators, and data panels explained.

## Key pages

- [Live Temperature Data for Kalshi Hourly & Daily Markets](https://minutetemp.com): Live data for 73 cities and Kalshi hourly temperature markets: 1-minute station data, the Kalshi Weather Index every minute, 20 forecast models and live odds.
- [Today's High & Low Temperatures for Kalshi & Polymarket](https://minutetemp.com/today): Live highs and lows so far today with forecast model consensus and spread for all 73 cities with Kalshi, Polymarket, Polymarket US, Robinhood and IBKR temperature markets.
- [Markets](https://minutetemp.com/markets): Every temperature market we track: 73 cities on Kalshi, Polymarket, Polymarket US, Robinhood and IBKR, with live settlement-station data, forecasts and each station's data resolution.
- [Kalshi Weather Markets: Temperature Settlement & Stations](https://minutetemp.com/kalshi): Kalshi daily and hourly temperature markets: the station behind each of 24 cities, what the rules settle on, and live data for every market.
- [Kalshi Hourly Temperature Markets & Weather Index, Live](https://minutetemp.com/kalshi/hourly): Live Kalshi hourly temperature markets for Miami, New York City, Chicago and Los Angeles Coastal: the Kalshi Weather Index every minute, stations and strikes.
- [Polymarket Temperature Markets: Event Slugs & Stations](https://minutetemp.com/polymarket): Polymarket daily highest and lowest temperature markets in 53 cities: each city's event slug, the station it settles on, and live data for every market.
- [Coinbase Weather Markets: Temperature Tickers & Stations](https://minutetemp.com/coinbase): Coinbase temperature prediction markets are Kalshi's: 48 daily high and low series in 24 cities and 4 hourly series, with tickers, stations and live data.
- [Robinhood Temperature Markets: UH/UL Tickers, Stations & Settlement](https://minutetemp.com/robinhood): Robinhood temperature markets are ForecastEx contracts: daily high (UH) and low (UL) in 23 cities, hourly (HRU) in 5, settled on Weather Underground. Tickers and stations.
- [Robinhood Hourly Temperature Markets: HRULGA, HRULAX & More](https://minutetemp.com/robinhood/hourly): Robinhood hourly temperature contracts (ForecastEx HRULGA, HRULAX, HRUSFO, HRUMIA and HRULAS): live strikes, MinuteTemp's reading at the settling station and how each hour settles.
- [IBKR Temperature Markets: ForecastEx UH/UL & Kalshi Highs](https://minutetemp.com/ibkr): Interactive Brokers temperature markets: ForecastEx daily high (UH) and low (UL) in 24 cities on Weather Underground, plus Kalshi daily highs in 7. Tickers and stations.
- [Pricing](https://minutetemp.com/pricing): Compare minuteTemp plans: free delayed data, live Kalshi hourly markets on every paid plan from $14.99/mo, and Starter and Pro API plans from ~21,600 requests/day.
- [Documentation](https://minutetemp.com/docs): Guides and documentation for minuteTemp — temperature data sources, forecast models, market settlement, and API reference.

## Optional

- [Full text](https://minutetemp.com/llms-full.txt): this file, every city's settlement rules and the docs above in full.
- [Sitemap](https://minutetemp.com/sitemap.xml)