The latest articles on DEV Community by Kushal D (@kushal_d_3c84af8e8f3427e1). https://dev.to/kushal_d_3c84af8e8f3427e1 https://media2.dev.to/dynamic/image/width=90,height=90,fit=cover,gravity=auto,format=auto/https:%2F%2Fdev-to-uploads.s3.us-east-2.amazonaws.com%2Fuploads%2Fuser%2Fprofile_image%2F4040093%2F7633441f-3dc2-4b8d-aed2-8e2af3dd74d4.png https://dev.to/kushal_d_3c84af8e8f3427e1 en Kushal D Tue, 21 Jul 2026 12:18:43 +0000 https://dev.to/kushal_d_3c84af8e8f3427e1/i-built-a-free-aqi-api-for-worldwide-cities-heres-how-53o0 https://dev.to/kushal_d_3c84af8e8f3427e1/i-built-a-free-aqi-api-for-worldwide-cities-heres-how-53o0 <p>India has 17 of the world's 20 most polluted cities. The existing AQI APIs either don't cover Indian cities well, or charge $99+/month.</p> <p>Antrolope is a free AQI API that works globally but is specifically built to have strong India coverage. It pulls from WAQI, OpenAQ, Open-Meteo, and OpenWeatherMap in parallel and averages the readings, giving you better accuracy than any single-source API.</p> <p>There's also a /pattern endpoint that returns the optimal window to go outside today based on hourly AQI trends currently optimized for Indian cities.</p> <p>Free API key at antrolope.com. Works for any city in the world.</p> api backend showdev sideprojects