Most Polluted Air Quality Stations

Explore PM2.5 monitoring stations and find the highest readings by country

Select Country

Country:

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Select a country to view PM2.5 monitoring stations and identify the most polluted station.

Enter API Keys

For this exercise you will use the OpenAQ API (Version 3) to fetch air quality data. You will need to sign up for a free account on OpenAQ to generate an API key.

Because the OpenAQ API does not support direct browser requests with custom headers, you will also need a free CORS proxy key from corsproxy.io.

OpenAQ API Key: CORS Proxy API Key:

Data from the OpenAQ Platform via corsproxy.io.

OpenAQ Key: | CORS Proxy Key: