Empowering communities with open air quality data and tools

openaq.org Empowering communities with open air quality data and tools csv,conf,v9 September 10, 2025 Bologna Russ Biggs - Director of Technology openaq.org Air pollution is ubiquitous 99% of the world’s population breathes unhealthy air openaq.org Air pollution is deadly On average, we lose 2 years of life-expectancy due to poor air quality. The deadliest environmental health hazard. openaq.org Air pollution harms some more than others. In areas most affected by air pollution, up to 8 years of life expectancy are lost. openaq.org Access to data is essential to addressing air pollution and improving air quality 36% of countries are not monitoring air quality at all; over 1 billion people openaq.org By providing universal access to air quality data, OpenAQ empowers a global community of changemakers to solve air inequality. By aggregating and harmonizing publicly available air quality data in a one-stop, free, transparent and open-source data platform. openaq.org Data on OpenAQ ○PM2.5 ○PM10 ○Sulfur Dioxide (SO₂) ○Nitrogen Dioxide (NO₂) ○Carbon Monoxide (CO) ○Black Carbon (BC) ○Ozone (O₃) openaq.org Data on OpenAQ Ground based Ambient High resolution (hourly) Concentration values (ppm, ppb, µg/m³, etc.) Openly licensed (CC BY 4.0 or more liberal) openaq.org Data on OpenAQ 135 countries 20,000 monitoring locations 120 data providers 2,000,000,000 measurements 1,500,000 new measurements daily openaq.org OpenAQ Python SDK async and sync API Typed deserialized objects Data engineering focus openaq.org OpenAQ R Typed data frame outputs Built-in plotting Data analysis and exploration openaq.org Funders supporting our vision of a world where everyone breathes healthy air, enabled by universal access to data: openaq.org @openaq [email protected]g links.openaq.org openaq.medium.com github.com/openaq