Dataset

Global air-quality measurements

Free & Open Data API 1 source

A unified open interface consolidating present-moment and archived pollutant readings from PM2.5, PM10, nitrogen dioxide and ozone sensors operated by public monitoring networks across the globe.

Dataset card

Global air-quality measurements is listed on the provider website by OpenAQ.

The data

The source tags it with air-quality, pollution and pm2-5.

Documentation & references 2
  1. OpenAQ/Global air-quality measurements: listing on the provider website
  2. OpenAQ: official website

Further reading

All guides
  • How funds evaluate alternative data vendorsEvaluating alternative-data providers: research fit, provenance, historical timing, permitted use and the evidence needed for an informed purchasing decision.
  • Open vs commercial alternative dataWhat free and open datasets can and cannot do: where public data rivals paid panels, where it cannot compete, and how open sources fit a professional research workflow.
  • Alternative data for hedge fundsA practical guide to alternative data for hedge funds: team design, budget sequencing, infrastructure, vendor portfolio construction and the metrics that show whether the program creates investment value.
  • Free alternative data sourcesThe practical list of free alternative-data sources for investors: public filings, official statistics, satellite and earth observation, on-chain data, web archives and open registries, what each covers, what it costs in engineering effort, and where free data falls short.

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