Will daily atmospheric CO2 be above 416.2 ppm on August 3, 2021?
Probability
0¢
1h
+0.0pp
24h
+0.0pp
24h Vol
$0.00
Liquidity
$0.00
Orrery restored this market from Polymarket's closed-market records. Treat the numbers below as last-known market context, then verify the resolution source before citing the outcome.
Canonical status
confidence: mediumSource status (Polymarket)
Derived status (Orrery)
Reason
Upstream marked the market closed/settled with NO price dominant.
Resolution & Risk
LOW risk- End date
- Aug 4, 2021
- UMA status
- n/a
- Resolution source
- Market type
- Binary
- Wide spread (100.0¢) — liquidity risk on entry/exit.
Probability (last 7 days)
+0.0pp 7dWhy did it move?
Structured · 2 factors- 01Active signal
Resolution-risk observation firing
Market has reached expiry. Watch the UMA dispute window.
- 02Spread cost
Wide spread — 100.0¢
Bid-ask spread is wide enough that intraday moves overstate any tradeable advantage. Most of the headline pp move would be eaten by spread on a market order.
What to track next
- Verify the resolution source on this page — exchange feed, official release, news consensus — before treating any move as new information.
Verification actions only — never trade recommendations.
Each factor is grounded in a single named metric you can verify on this page — probability, volume, liquidity, signal, resolution state. No predictions, no prose hallucinations.
Resolution & Risk
LOW risk- End date
- Aug 4, 2021
- UMA status
- n/a
- Resolution source
- Market type
- Binary
- Wide spread (100.0¢) — liquidity risk on entry/exit.
Verification Brief
A guided checklist for what must be proven before this market is treated as reliable context.
The market appears resolved. The useful check is whether the source and final oracle state match the displayed outcome.
Create trust-state alertVerification goal
Map resolution-relevant sources to the exact criteria needed to avoid misreading price as settlement.
What needs proof
Primary source
requiredConfirm the primary official government source and whether it directly answers the market's resolution question.
Current evidence: esrl.noaa.gov
Contract wording
requiredExtract the exact condition that makes YES resolve true and note any exclusions, time zone, deadline, or fallback rule.
Orrery verification task Will daily atmospheric CO2 be above 416.2 ppm on August 3, 2021? State: Resolved NO — officially resolved Need sources for: 1. Primary source: Confirm the primary official government source and whether it directly answers the market's resolution question. 2. Contract wording: Extract the exact condition that makes YES resolve true and note any exclusions, time zone, deadline, or fallback rule. 3. Liquidity context: Check whether the move is supported by enough liquidity and volume to treat it as meaningful context. Drop only durable links that map to one criterion. Research only. Not trade advice.
Orrery verification brief Will daily atmospheric CO2 be above 416.2 ppm on August 3, 2021? State: officially resolved Verify: Primary source + Contract wording Price is not settlement. Research only. Not trade advice.
Market link goes in reply
A controlled loop for durable sources. Every source must answer one criterion from this Verification Brief.
Sources
0
Criteria covered
0
Reviewed
0
Awaiting review
0
Submit a source mapped to a criterion
Recent source checks
Pilot audit summary
Research only · Not trade advice · Every source maps to one criterion
Timeline
critical · price · trade flowCritical
- 18:15SignalLOW
Resolution risk
Market has reached expiry. Watch the UMA dispute window.
Price movement
+0.0pp over the last 24h, now 0¢.
Active signals
Recent Trades
No recent trades visible from the Data API for this market. That usually means liquidity is thin or this market is between event windows.
Related Markets
1Market Description
This is a market on whether atmospheric CO2 will be above 416.20 parts per million (ppm) for the date of August 3, 2021 as measured by the National Oceanic and Atmospheric Administration’s Mauna Loa observatory (https://www.esrl.noaa.gov/gmd/ccgg/trends/monthly.html). This market will resolve to “Yes” if the daily average atmospheric CO2 is greater than 416.20 ppm for August 3, 2021 and “No” otherwise. This market will resolve when data for the date of August 3, 2021 is first published on the resolution source, i.e. in the green information box on https://www.esrl.noaa.gov/gmd/ccgg/trends/monthly.html, which appears under the “Recent Daily Average Mauna Loa CO2” heading. If data is not available for the date of August 3, 2021, by August 6, 2021, 12:00 PM ET, this market will resolve 50-50. In the event of ambiguity in terms of the market outcome, the market will be resolved at the sole discretion of the Markets Integrity Committee (MIC). Warning: It may be possible to infer Daily CO2 emissions using data available elsewhere on the National Oceanic and Atmospheric Administration’s Mauna Loa observatory website (here: https://gml.noaa.gov/dv/data/ & https://gml.noaa.gov/dv/iadv/) up to 24 hours before they are published to the main resolution source. Trade at your own risk within the last 24 hours of the market.
Why this category?
confidence: mediumCategory
Source
Matched term
ScienceReason
No rule fired; using Polymarket's own category hint "Science".
Categories come from a deterministic engine: manual overrides (highest priority) → sports hard markers → event-tag rules → keyword rules → Gamma category hint → default. The engine is versioned in category-overrides.ts; methodology lives at /methodology.
FAQ — questions readers actually ask
What is the current Polymarket probability for "Will daily atmospheric CO2 be above 416.2 ppm on August 3, 2021?"?
As of Fri, 05 Jun 2026 18:15:34 GMT, YES is priced at 0% implied probability on Polymarket. The price changed +0.0pp in the last 24 hours, +0.0pp in the last hour, and +0.0pp in the last 7 days.
When does this market resolve?
This market resolves by Aug 4, 2021 (2021-08-04T00:00:00.000Z). Resolution is determined from https://www.esrl.noaa.gov/gmd/ccgg/trends/monthly.html.
What source determines the outcome?
Resolution is sourced from https://www.esrl.noaa.gov/gmd/ccgg/trends/monthly.html. Polymarket's UMA optimistic oracle is the final settlement layer; if the published source is ambiguous, UMA tokenholders adjudicate. Source-extraction confidence is shown in the Resolution & Risk block above.
How much is being traded on this market?
$0.00 of trading volume in the last 24 hours. Lifetime volume on Polymarket: $4.2K. Open liquidity in the YES/NO orderbooks: $0.00. Spread between best bid and best ask: 100.0¢.
Is this a trade recommendation?
No. Orrery describes — never predicts. Every signal on this market carries explicit Evidence, Backtest, and Action tiers. The Action is always one of: Watch only, Inspect timeline, Create alert, Verify source, or Ignore — never Buy or Sell. The probability above is the market's collective implied probability, not a forecast Orrery is publishing.
How fresh is this data and where does it come from?
This page revalidates from the public Polymarket APIs every 30 seconds. Probability and 24h-change come from Gamma; the chart series comes from the CLOB orderbook history; trade and holder data come from the Data API. The fetched-at timestamp on each block tells you exactly how old the underlying upstream pull was.
Alerts
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