Question 1

What is PolyNimbus?

Accepted Answer

PolyNimbus is a free dashboard for tracking Polymarket highest-temperature weather prediction markets. It provides live odds, CLOB order book data, METAR aviation weather observations, and ensemble weather forecasts for 36+ cities including London, New York, Tokyo, Seoul, Shanghai, Shenzhen, Beijing, Singapore and more.

Question 2

How do Polymarket weather markets work?

Accepted Answer

Polymarket weather markets let you trade on the highest temperature recorded in a specific city on a given day. Each market has temperature bins (e.g. 66-67°F) that you can buy or sell. The market resolves based on official Weather Underground data from the airport weather station. PolyNimbus shows you live odds, order book depth, METAR observations and model forecasts to help you make informed decisions.

Question 3

What cities does PolyNimbus track for Polymarket weather?

Accepted Answer

PolyNimbus tracks Polymarket weather markets for 36+ cities worldwide: London, New York, Tokyo, Seoul, Shanghai, Shenzhen, Beijing, Singapore, Hong Kong, Taipei, Wellington, Chicago, Dallas, Miami, Houston, Atlanta, Denver, Seattle, San Francisco, Los Angeles, Toronto, Paris, Madrid, Milan, Munich, Ankara, Istanbul, Austin, Warsaw, Tel Aviv, Lucknow, Buenos Aires, São Paulo, Chengdu, Chongqing, Wuhan. Each city shows today and tomorrow markets with live odds and volume data.

Question 4

What is METAR and how does it help with Polymarket weather markets?

Accepted Answer

METAR is the international standard for aviation weather reports issued by airports. PolyNimbus displays live METAR temperature observations alongside Polymarket odds so you can compare real observed temperatures against what the market expects. This helps identify opportunities where actual weather diverges from market predictions.

Question 5

Is PolyNimbus free to use?

Accepted Answer

Yes, PolyNimbus is completely free. It provides real-time Polymarket weather market data, METAR observations, ensemble forecasts, and an interactive world map at no cost.

Question 6

How do I find Polymarket weather trading opportunities?

Accepted Answer

PolyNimbus has a built-in Opportunities Scanner that compares live METAR temperatures with model forecasts across all cities. When the actual observed temperature diverges from the market consensus by 1°C or more during peak hours (11 AM – 3 PM local time), it flags potential trading opportunities.

SeattlePolymarket Weather Market

Temperature Forecast — 1 Day

Temperature Forecast — 7 Day

Weather snapshot