Analytics
Resolved Yes on 25 Jul 2026.
The last daily price before settlement had Yes at 97.7%. Yes opened at 90.5% on 18 Jul 2026. Before it settled, across the 8 daily closes on record from 18 Jul 2026 to 25 Jul 2026, the highest close was 99.9% on 23 Jul 2026 and the lowest 62% on 20 Jul 2026. Its largest one-day move was 26 points down, to 62% on 20 Jul 2026. $3.74K traded over the market's life.
11 wallets still hold shares. Winners redeem theirs after settlement, so what is left is mostly the losing side.
Polymarket record as of Jul 26, 3:47 PM UTC
Daily closes of the Yes price, Polymarket CLOB, 8 points, 18 Jul 2026 – 25 Jul 2026
| Observed | Yes price |
|---|---|
| 18 Jul 2026 | 90.5% |
| 25 Jul 2026 | 97.7% |
Winners have redeemed their shares, so most of what is left is the losing side.
Open a trader’s name to inspect the wallet’s available P&L, positions and recorded trades, with source dates and coverage. A large position alone does not establish a winning track record.
This market will resolve to "Yes" if "Chicago" has a PM2.5 Air Quality Index of below 100 between July 17, 2026 and the specified date. Otherwise, this market will resolve to "No". This market's resolution source will be https://www.airnow.gov/state/?name=illinois. To get to the figures used to resolve this market, select the "Historical Air Quality" tab, then find the finalized figure for the"Chicago" row under the "Daily AQI for PM2.5" column. This market may remain open for two days after the specified date to confirm the daily AQI figures for the specified timeframe. If the figures remain unavailable, another credible resolution source will be chosen.
Official listing: polymarket.com/event/chicago-air-quality-index-below-100-byptptpt-20260717130414628
| Frizzy-Reinscription | No | 27.98 |
| monoclith | No | 14.44 |
| Clear-Cut-Skullcap | No | 10.03 |
| Grandiose-Layer | No | 5 |
| rocketcrypto | No | 5 |
| Emerald Kestrel 0AFE | Yes | 0.04 |
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