Climate Prediction Market Data — Kalshi & Polymarket

Tick-by-tick trades and L2 order-book depth for 161 climate series on Kalshi & Polymarket — daily high temperature in NYC, London, Paris, Seoul. 21,115 series-days covering December 2025 – September 2026, sold as day bundles from €1.

Browse prediction bundles Most traded series →All prediction markets →

Series

161

Venues

Kalshi · Polymarket

Coverage

December 2025 – September 2026

Series-days

21,115

Trades (30d)

6,064,143

Turnover (30d)

$44.6M

Topics

Browse climate data by topic

Each topic hub lists its series per venue with 30-day activity (to 2026-09-13), coverage and FAQ.

Temperaturedaily high temperature in NYC HurricanesHurricane Names (KXHURRICANENAMES)Lowest Temperaturedaily low temperature in NYC

161 series · 711 GB

All climate series

Every live series in this topic, largest archive first. Each series page lists its exact coverage, day count and free samples; day bundles are bought in the shop calendar.

Series	Venue	Interval	Days	Coverage	Size	Price/day
Daily High Temperature — Paris	Polymarket	daily	215	February 2026 – September 2026	16.4 GB	€1	Buy days
Daily High Temperature — New York City	Polymarket	daily	275	December 2025 – September 2026	16.1 GB	€1	Buy days
Daily High Temperature — London	Polymarket	daily	275	December 2025 – September 2026	16.0 GB	€1	Buy days
Daily High Temperature — Munich	Polymarket	daily	195	March 2026 – September 2026	15.4 GB	€1	Buy days
Daily High Temperature — Seoul

By venue

Climate activity per venue

Venue	Series	With stats	Trades (30d)	Turnover (30d)
Kalshi	57	55	3,398,677	$27.2M
Polymarket	104	102	2,665,466	$17.4M

30 days to 2026-09-13, from our own daily statistics per contract.

Daily activity

Climate prediction markets — trades and turnover per day

Every captured UTC day of the last 30, summed over the 161 climate series, from our own tick capture.

UTC day	Series with stats	Contracts traded	Trades	Turnover	Buy share	L2 updates
2026-09-13	152	2,965	193,125	$1.4M	46 %	64.6M
2026-09-12	152	3,079	156,302	$901.2K	57 %	68.0M
2026-09-11	152	3,280	196,983	$1.2M	54 %	76.7M
2026-09-10	157	3,556	221,759	$1.5M	53 %	87.0M
2026-09-09	157	4,146	207,240	$1.4M	56 %	83.6M
2026-09-08	157	4,587	226,893	$1.7M	55 %	91.2M
2026-09-07	157	4,836	217,195	$1.4M	55 %	93.3M
2026-09-06	157

Biggest contracts

Most traded climate contracts on 2026-09-13

The single event contracts with the most USD turnover on the newest captured day — open and close price and the outcome implied by the last print.

Contract	Series	Venue	Open → Close	Implied outcome	Trades	Turnover
lowest-temperature-in-austin-on-september-12-2026-76-77f	Daily Low Temperature — Austin	Polymarket	0.880 → 0.999	Yes	35	$100.1K	buy file →
KXRAIN-26SEP13-OKC	Where will it rain daily	Kalshi	0.040 → 0.990	Yes	652	$75.5K	buy file →
KXRAIN-26SEP13-CHI	Where will it rain daily	Kalshi	0.300 → 0.990	Yes	3,495	$48.2K	buy file →
KXHIGHLAX-26SEP13-B78.5	Highest temperature in Los Angeles	Kalshi	0.400 → 0.990	Yes	3,749	$45.3K

FAQ

Climate prediction-market data — FAQ

What climate prediction-market data can I download?

Tick-by-tick trades and Level-2 order-book depth for every contract of 161 climate series on Kalshi & Polymarket — daily high temperature in NYC, London, Paris, Seoul. Each series page lists its exact coverage and day count.

How far back does the climate data go?

Coverage runs December 2025 – September 2026 — 21,115 series-days in total across the category.

How is the climate data sold?

As series-day bundles: one purchase covers every contract of a series for one UTC day, typically €1. Pick days in the shop calendar; delivery is per file, one ZIP per day, or a resumable multi-day archive.

What format do the files ship in?

One zstd-compressed text file per contract per UTC day, in the same documented schema as every crypto venue; trades also export as gzipped CSV or Parquet at no extra cost. Free samples are on the downloads page, the schema in the market-data specification.

Other prediction-market categories

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