LA Wildfire Prediction Markets: How Polymarket Prices Fire Risk

Quick answer

When a major Los Angeles wildfire breaks out, Polymarket and Kalshi both spin up live markets within hours — typically acreage bands ('How many acres will the fire burn by Sunday?'), evacuation thresholds, and containment-percentage markets. The January 2025 Palisades and Eaton fires generated $1.2M+ in combined Polymarket volume in 5 days. This guide explains how to trade them — and how to do so without rooting for disaster.

Acreage settlement, named-incident dates and Red Flag Warning counts referenced below resolve to CAL FIRE's official statewide incident database. [source: CAL FIRE Statewide Incidents]

Three contract types you'll see

1. Acreage band markets

Polymarket's most-traded fire contract type. Example from January 2025: 'How many acres will LA wildfires burn by Sunday?' with bands at <30k, 30–40k, 40–50k, 50–60k, 60–70k, 70–80k, 80k+. Each band trades independently. Resolved at the final band that contains the actual acreage.

2. Named-fire binary markets

Example: 'Sunset wildfire burns 1k+ acres by Sunday?' — a single yes/no. Used early in a fire's lifecycle when the spread direction is uncertain. Tighter spreads, faster resolution.

3. Containment / cause markets

Kalshi has run markets on '90% containment by date X' and 'Fire determined to be arson.' Polymarket has experimented with the same. Lower liquidity but useful for tail-risk trading after the initial volume spike fades.

What January 2025 taught the market

The Palisades fire's final acreage market resolved at 40–50k acres — a band that traded at 6% on day one and 100% on day five. The early acreage markets dramatically under-priced large-fire scenarios because models trained on average-California-fire data didn't capture Santa Ana-driven urban-interface dynamics. Two takeaways:

1. 1.Day-one acreage markets systematically under-price the largest band when Santa Ana conditions are active
2. 2.Containment markets over-price fast-resolution scenarios — buyers of 'low containment' bands at 5¢ saw them hit 100%

How to trade safely

• •Limit orders only — market orders during a fire-news spike will cost you 15–30¢ of spread
• •Trade after the first 4 hours — initial pricing is noise; real signal appears once Cal Fire posts an official perimeter map
• •Hedge with the 'lower band' contract — counter-intuitively, the smallest acreage band is often free-money insurance against the fire being contained quickly
• •Don't pyramid — wildfire markets resolve in days. There's no rebuy opportunity if you're wrong

Seasonal evergreen contracts

Beyond episodic named-fire markets, both platforms run 2026-season cumulative markets:

The El Niño cross-trade

California wildfire acreage correlates -0.4 with El Niño years — a meaningful but imperfect inverse relationship. If you've bought 'El Niño declared 2026' on Polymarket, you're already implicitly short the '>1M acres burned' contract. Don't double up on the same thesis; consider the El Niño contract as a fire hedge already.

A note on responsible trading

Fire markets aren't rooting for catastrophe — they're price-discovery mechanisms that help reporters, insurance modelers, and emergency planners. Set position limits, never trade on inside information (e.g., your friend at Cal Fire), and consider donating a portion of fire-market winnings to the affected communities. The California Community Foundation maintains a dedicated wildfire relief fund.