**The market has converged on 30°C at essentially 100% implied probability because official observations from Toronto Pearson International Airport recorded a daily maximum of exactly 30°C on July 31, 2026.** This outcome aligns with Environment and Climate Change Canada and airport station data, which serve as the resolution source for the market. Forecasts in the preceding days had projected highs near 28–29°C under mostly sunny conditions with light southerly flow, but the observed peak reached the next threshold, likely due to localized warming or slight forecast underestimation of daytime heating. The near-certain pricing reflects the fact that the measurement window has closed, with no realistic revision possible once station data are finalized. The only scenarios that could theoretically challenge resolution at 30°C would involve an unprecedented post-hoc adjustment to the official record—such as a rare data-quality flag or station calibration error—which occurs infrequently and has not been indicated in preliminary reports. Historical context shows July maxima in Toronto typically average 26–27°C, so this reading sits modestly above the long-term baseline without entering extreme territory.