Market TrustClaim ledgerDiligence packet
100%yes · live odds
Do not citeUnder-measured: 1 of 6 pillarsMeasurement certainty Low
Odds via Polymarket public API. Verdict is an experimental market-quality diagnostic, not advice.
+91.3 pts 24h

Part of a mutually exclusive multi-outcome group (Polymarket neg-risk)

Part of event: Highest temperature in Madrid on August 24? · highest-temperature-in-madrid-on-august-24-2026

Market structure and 24h change as reported by Polymarket's public API.

Top of book

Best bid

0.997

Best ask

1.000

Spread

0.3% of mid

0.30 pts

As reported by Polymarket's public API at 20:08 UTC; top of book, not full depth; per-side depth not shown. The spread is shown against the midpoint of the two quotes above, which is arithmetic on the venue's figures, not a figure the venue reports.

Volume

24h volume

$11,152

Total volume

$16,109

Volume as reported by Polymarket's public API.

Resolution rules

Rules as stated by Polymarket, reproduced verbatim. Convexly has not independently reviewed them and does not endorse them; the rating's resolution-reliability pillar treats rule text as present but not independently reviewed.

This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Adolfo Suárez Madrid-Barajas Airport Station in degrees Celsius on 24 Aug '26. The resolution source for this market will be information from NOAA, specifically the highest reading under the "Temp" column for all times on this day, available here: https://www.weather.gov/wrh/timeseries?site=lemd To toggle between Fahrenheit and Celsius, click the "Switch to Metric Units" button until the relevant table displays °C. This market can not resolve until the first data point for the following date has been published on the resolution source. The resolution source for this market measures temperatures to whole degrees Celsius (eg, 9°C). Thus, this is the level of precision that will be used when resolving the market. Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.Show the full rules text

This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Adolfo Suárez Madrid-Barajas Airport Station in degrees Celsius on 24 Aug '26. The resolution source for this market will be information from NOAA, specifically the highest reading under the "Temp" column for all times on this day, available here: https://www.weather.gov/wrh/timeseries?site=lemd To toggle between Fahrenheit and Celsius, click the "Switch to Metric Units" button until the relevant table displays °C. This market can not resolve until the first data point for the following date has been published on the resolution source. The resolution source for this market measures temperatures to whole degrees Celsius (eg, 9°C). Thus, this is the level of precision that will be used when resolving the market. Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.

Resolution mechanics

Resolution parameters as stated by Polymarket.

Resolved by (UMA adapter)
0x69c47De9D4D3Dad79590d61b9e05918E03775f24
Proposer bond
$250 proposer bond
Proposer reward
$1 proposer reward
Stated resolution source
https://www.weather.gov/wrh/timeseries?site=lemd

Market Trust diagnostic · v0.2 candidate

Will the highest temperature in Madrid be 29°C on August 24?

This market is not in the v0.1 daily card set yet. The v0.2 diagnostic scorecard below shows the per-pillar contribution from the latest materializer run, with visible caveats and evidence-status separation.

Why this rating

Why this rating

Composite 65 · Do not cite

Measurement certainty

Low

1 measured · 2 modeled · 3 not assessed

Certainty reflects how much of this market we measured, not how good the market is.

  • CoherenceModeled estimatefixed rules, not a per-market measurementweight 25.0

    No full-provenance CME signal is linked to this condition in the current ledger window; absence of a signal is not proof of coherence.

    • · no linked cme signal in window
    • · absence of signal not proof of coherence
    • · cme signal window days: 7
    • · recent full provenance signals: 23
    50+25.0
  • ExecutabilityNot assessednot yet measured for this marketweight 20.0

    Executability scored as worse-of(spread, depth) from a single orderbook snapshot; the two were merged from the former liquidity + depth pillars to stop double-counting one correlated source.

    • · executability worse of spread depth
    • · spread: one_sided_orderbook_boundary
    • · spread: direct_bid_ask_spread_missing
    • · spread: visible $1k ladder slippage 0.24pp
    65not assessed
  • Resolution reliabilityModeled estimatefixed rules, not a per-market measurementweight 20.0

    Resolution source and rule text are present but not independently reviewed.

    • · resolution metadata present manual review pending
    70+28.0
  • Participant flowNot assessednot yet measured for this marketweight 20.0

    Participant flow inputs exist but do not meet identity-coverage floors; descriptive only.

    • · below publishable sample floor
    • · edge score composite descriptive not skill
    • · high participant concentration
    • · insufficient scored accounts
    not assessednot assessed
  • Integrity-risk screenNot assessednot yet measured for this marketweight 10.0

    One or more screen indicators flagged at a low level. A reason to look, not a finding about anyone.

    • · top-3 wallets control 92% of notional flow
    • · flow events: 6
    • · distinct wallets: 5
    • · wash round trips: 0
    75not assessed
  • Audit completenessMeasuredweight 5.0

    3 linked artifacts; 0 missing hashes; 0 stale/failing sources.

    • · artifact hashes present
    • · source watermarks healthy
    100+10.0

How it adds up: composite = Σ(score × weight) / Σ(weight) across measured + heuristic pillars only. Pending and data-rights-blocked pillars are excluded from both numerator and denominator. Total contributing weight = 50.0.

Caveat: 3 pillars not assessed yet; the score will recompute as the substrate fills in.

Structural coherence read

The Coherent Markets Engine checks this market's pricing for structural inconsistencies against related markets. Whether a current signal exists, and its construction, is included with Researcher.

See Researcher

Market opened 2026-08-22 · minimum order size 5 shares · price tick size 0.001 · as stated by Polymarket.