An air-quality market is only as clear as its station and threshold

A report says smoke affected several provinces and schools moved classes indoors. A market about air quality may use one monitoring station, one reading, and one cutoff. The broad story is context, not settlement.

Environmental events are full of measurement choices: PM2.5 or AQI, hourly peak or daily average, city boundary or regional list, official sensor or modeled estimate.

Write the measurement before the narrative

Name the pollutant, unit, station, local date, and threshold. AQI categories can differ from raw concentration, and a station outside the named area cannot stand in for it.

Imagine a contract that resolves YES if the official daily maximum at a specified station exceeds a threshold. A school closure notice can be important evidence of impact, but it does not replace the named measurement.

Keep geography honest

Several provinces can share a smoke plume while only one appears in the contract. Draw the eligible locations and map each to an official reporting source. Do not blend city, province, and national numbers.

Record publication time and any revisions. A preliminary sensor reading may be corrected later; the rules should say which version counts.

Price data quality

Thin environmental data can widen spreads and delay settlement. A position that depends on one sensor needs a plan for missing readings, outages, and the market's fallback source.

Before placing an order, save the exact threshold, location, window, and source. The useful question is not whether the air looks bad in pictures. It is whether the contract's measurement will be available, comparable, and decisive.

Further reading: Prices and order books · Resolution rules · Current fees.

Explore the markets: Open Polymarket (referral link).