Polymarket daily high and low temperature raw ticks

• Window: recordings from 14 September 2026 onward, with receipt times in UTC. Earlier market history is unavailable.
• Geography: city markets including New York, London, Seoul, and Buenos Aires. Available markets change over time.
• Tables: weather_high_orderbook and weather_low_orderbook, each pooling cities with the same 19 columns.
• Grain: one recorded event from a market-channel message per row. Ticks are not aggregated into one-second intervals.
• Cadence: incoming events are saved in batches. Row counts vary with market activity and connection availability.
• Limits: history can contain gaps. Raw events require venue-specific interpretation to reconstruct an order book and do not establish executed trades.

• venue: exchange supplying the event.
• city: city label derived from the market details.
• market_type: daily high or daily low temperature market.
• market_id: venue identifier for the market.
• instrument_id: venue identifier for the traded instrument or outcome token.
• outcome: outcome label when available.
• event_type: event category used by the table.
• venue_event_type: original event type supplied by the venue.
• venue_timestamp: original event timestamp when supplied.
• received_at: time the message was received, in UTC.
• source_segment_id: identifier for the recorded message batch.
• connection_epoch: recording connection identifier.
• frame_sequence: message position within the recording connection.
• event_index: event position within the original message.
• event_id: recorded event identifier.
• discovery_metadata_digest: identifier for the captured market details.
• market_metadata: market details as JSON, preserved as known when recorded.
• raw_event: original event JSON, including venue-specific prices and quantities.
• raw_message: complete original message JSON.

Outcome labels and venue timestamps can be null when absent from the source. Empty books and zero-size changes remain in the raw payloads.

• Studying changes in temperature-market order books.
• Comparing recorded market activity across cities.
• Comparing Kalshi and Polymarket after aligning contracts, outcomes, and price units.

Polymarket supplies the events through its public Market Channel and market details through its Gamma API. No open redistribution licence is claimed.