What are the best Environment APIs?

The best Environment APIs in 2026 have clear docs, reliable uptime, modern SDKs, and fair pricing. We curated top options to help you ship faster.

Are there free Environment APIs?

Yes. Many Environment APIs offer free tiers or trials suitable for hobby projects and prototypes.

How do I choose a Environment API?

Evaluate documentation, auth method, SDKs, rate limits, pricing, and support. Start with a free tier, then upgrade as usage grows.

Best Environment APIs (2026)

We curated the best Environment APIs for developers. Browse 16+ options and compare features, docs, and pricing.

View all Environment APIs →

AirVisual

Environment

The most trusted historical, real-time and forecast air quality data for cities around the world

BreezoMeter Pollen

Environment

Daily Forecast pollen conditions data for a specific location

Carbon Interface

Environment

API to calculate carbon (C02) emissions estimates for common C02 emitting activities

Climatiq

Environment

Calculate the environmental footprint created by a broad range of emission-generating activities

Cloverly

Environment

API calculates the impact of common carbon-intensive activities in real time

IQAir

Environment

Air quality and weather data

Luchtmeetnet

Environment

Predicted and actual air quality components for The Netherlands (RIVM)

National Grid ESO

Environment

Open data from Great Britain’s Electricity System Operator

PM2.5 Open Data Portal

Environment

Open low-cost PM2.5 sensor data

PM25.in

Environment

Air quality of China

PVWatts

Environment

Energy production photovoltaic (PV) energy systems

Srp Energy

Environment

Hourly usage energy report for Srp customers

How we pick the best Environment APIs

We consider documentation clarity, SDK availability, authentication type, community adoption, and overall developer experience. We recommend starting with free tiers where available.