15 or more countries meet the WHO clean air standard in 2025?
市场数据
规则
This market will resolve to "Yes" if the IQAir World Air Quality Report 2025 lists 15 or more countries with a national annual average PM2.5 concentration at or below 5 μg/m³. Otherwise, resolves "No".
Edge Cases
Report Delay: If IQAir 2025 report not published by June 30, 2026, this market resolves "No"
Preliminary vs Final Data: If report is labeled "preliminary" when first published, wait until May 31, 2026 for final version. If still preliminary by May 31, use the preliminary data.
Report Inaccessible: If IQAir website is completely inaccessible (404 error, site down, etc.) for 14+ consecutive days before June 30, 2026, this market resolves "No"
Incomplete Report: If IQAir publishes a 2025 report but does not include country-level PM2.5 averages or does not cover at least 100 countries, this market resolves "No"
Boundary Value: Countries with exactly 5.0 μg/m³ count as meeting the standard (≤ 5 means "at or below")
来源
Resolution Source
Sole Source: IQAir World Air Quality Report 2025 (iqair.com/world-air-quality-report)
Use the official annual report explicitly labeled as covering year 2025
Count only countries that IQAir reports as having annual average PM2.5 ≤ 5 μg/m³
Accept IQAir's reported values and methodology without adjustment