About Mr. Duck’s Air Quality

Mr. Duck’s Air Quality is a simple, global air-quality directory. It helps you quickly understand the latest air pollution situation for a city, country, or continent.

We do not measure air ourselves

We do not operate sensors and we do not collect measurements directly. Instead, we use public data provided through OpenAQ, which aggregates readings from many monitoring networks.

What we do with the data

• Aggregation: city pages may represent multiple stations and readings.
• Cleaning: we try to avoid misleading summaries when measurements are clearly incomplete or inconsistent.
• AI-assisted writing: we use AI to rewrite technical information into clearer text, without presenting it as official guidance.

No medical advice

This website is for informational purposes only. Air pollution can affect people very differently. We do not provide medical advice, diagnosis, or treatment recommendations.

For official, trusted guidance, we strongly recommend checking these sources:

• US EPA AirNow
• World Health Organization (WHO) — Air Pollution
• European Environment Agency (EEA) — Air

If you have symptoms or health concerns, consult a qualified healthcare professional.

Want details on pollutants and units?

See our plain-language guide: About the data.