Live fair-value on Kalshi weather markets

Fair value for every weather market.

Quantitative edge for Kalshi weather traders. Eight shadow fair-value engines, Platt-calibrated, ticking every five minutes across 67 stations.

+$5,311 over 14 days on 48 trades · 39.6% hit rate · $10k bankroll
The problem

Kalshi weather markets are mispriced. Retail has no edge.

Most traders eyeball a forecast app and guess. Market makers eat the spread, take-off trades go unanswered, and strike probabilities drift from reality within minutes of the next model run. You need quant infrastructure, not another weather widget.

🎯

Stale forecasts

Consumer weather apps refresh once an hour. Kalshi strikes move every minute. By the time you see a change, the book has too.

📊

No calibration

NWS probabilities aren't book-calibrated. Raw GFS/HRRR output isn't either. Without a calibrated fair value, every trade is a coin flip with a spread on top.

Market-maker tax

You cross the spread because you can't rank edge. A 3¢ edge looks the same as a 0.5¢ edge in the UI. Result: negative expected value, one trade at a time.

Proof

The numbers, unembellished.

Live shadow bot results. Not a backtest — actual orders on Kalshi with real P&L. Methodology in the docs.

55.4%
Hit rate across
all signals (90-day)
$32k
YTD P&L,
shadow bot
93%
of oracle alpha
captured in real-time
+$5.3k
over 14 days
on a $10k bankroll
Product

Eight engines. Sixty-seven stations. Five-minute tick.

An ensemble of shadow fair-value models, Platt-calibrated against realized outcomes, running in parallel across every weather series Kalshi lists.

20
US stations covered
47
International stations
8
Shadow FV engines
5 min
Tick interval
Platt
Calibration method
GFS · HRRR · ECMWF · NAM · GEFS
NWP sources
METAR · PWS · CWOP
Real-time observations
24/7
Always-on shadow bot
How it works

Data in. Fair value out. Signals on your screen.

1

NWP models + observations

GFS, HRRR, ECMWF, NAM, GEFS ensemble — blended with live METAR and PWS obs on a 5-minute tick.

2

Fair-value engine

Eight shadow FV models produce independent strike probabilities; Platt calibration maps them to bookable prices.

3

Signals delivered

Edge-ranked trade tickets on every Kalshi weather contract. Taker-aware, Kelly-sized, ready to execute.

Who it's for

Built for three kinds of trader.

🎲
Derek
Retail Kalshi trader

Trades temp / rain / wind contracts between jobs. Wants edge without a PhD.

  • One-tap trade tickets
  • Edge-ranked signals
  • Mobile-first UI
🧪
Priya
Quant / systematic

Runs size. Wants raw fair values, historical calibration, and an API.

  • REST + WebSocket API
  • Model-level FV streams
  • Calibration history
🏈
Marcus
Sports bettor diversifying

From DFS and sportsbooks. Weather is his next +EV venue.

  • Closing-line-value framing
  • Kelly sizing out-of-the-box
  • Bankroll dashboard
Pricing

Start free. Upgrade when it pays for itself.

14-day free trial on paid tiers. Cancel any time.

Free
$0 / mo
Try before you buy.
  • 3 US stations
  • 15-minute tick
  • Single FV engine
  • Community support
Sign up free
Quant
$99 / mo
API access + raw fair values.
  • Everything in Trader
  • REST + WebSocket API
  • Per-model FV streams
  • Historical calibration data
  • Priority support
Start 14-day free trial

See full plan comparison →

Ship your next trade with an edge.

14 days free. No credit card for the Free tier. Cancel in two clicks.