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Developer launches free AQI API with strong India coverage and global reach

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A developer has built Antrolope, a free air quality index API designed to address gaps in coverage for Indian cities, which dominate the list of the world's most polluted urban areas. The API aggregates data from four sources — WAQI, OpenAQ, Open-Meteo, and OpenWeatherMap — and averages the readings to improve accuracy over single-source alternatives. Existing AQI APIs either lack adequate India coverage or cost upwards of $99 per month, making Antrolope a cost-free alternative. The platform also offers a /pattern endpoint that analyzes hourly AQI trends to suggest the best time to go outdoors, currently optimized for Indian cities. Free API keys are available at antrolope.com, and the service supports cities worldwide.

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