# Meersens, free trial, GET /air/forecast: Air quality API

> Returns paginated hourly forecast air quality data at a given location.

Meersens's air quality API on its Free trial plan. It costs $0.00 per 1,000 places. It returns 2 of the 6 key fields we check: Particles, Gases.
We rank 94 plans by price. [OpenWeather's £370 monthly plan](https://datacircle.dev/air-quality-apis/openweather/370-monthly-professional-get-data-2-5-air-pollution/llms.txt) is the cheapest paid plan per 1,000 places: $0.00049.
[WeatherAPI.com](https://datacircle.dev/air-quality-apis/weatherapi-com/7-monthly/llms.txt), [Open-Meteo](https://datacircle.dev/air-quality-apis/open-meteo/99-monthly-api-professional-get-v1-air-quality-air-quality/llms.txt) and [Weatherbit](https://datacircle.dev/air-quality-apis/weatherbit/495-monthly-business-get-v2-0-forecast-airquality/llms.txt) are the best air quality API providers in our benchmark.

- This page: https://datacircle.dev/air-quality-apis/meersens/free-trial-get-air-forecast
- [Best air quality API in 2026: pricing compared](https://datacircle.dev/best-air-quality-api.txt)
- Get it: https://meersens.com/free-trial-of-our-environmental-solution/?lang=en
- Request: `GET https://api.meersens.com/environment/public/air/forecast`
- API key: with the plan, on https://meersens.com/free-trial-of-our-environmental-solution/?lang=en
- Its API docs: https://partners.meersens.com/#air-quality-forecast
- Sold by: Meersens (https://meersens.com)
- Checked: 2026-10-30

## In the answer

- Completeness: 33%
- Particles: ✓
- Gases: ✓

## Price

- $ per 1,000 places: $0.00
- Per: call
- Billing: free

## Not found

- $ per 1,000: $0.00

## In their words

- Their pitch: Returns paginated hourly forecast air quality data at a given location.

## Data

- Keep data: no API terms
- Use data: no API terms

## Plan

- Pay: $0
- You get: 5,000 requests
- Enough for: 5,000 calls
- Expires: 14 days

## Rate limit

- Batch: 1

## The call

- You send: lat, lng. Optional: index_type, from, to (a timeframe of up to 96 hours), page, Accept-Language header
- Method: GET
- Path: /air/forecast

## About the plan

- Plan: Free trial
- Who can get it: anyone

## The 23 fields the plan's answer can hold

found, hour, AQI, AQI type, AQI name, AQI category, AQI description, AQI icon, AQI color, main pollutants, PM2.5, PM10, ozone, nitrogen dioxide, sulfur dioxide, carbon monoxide, pollutant unit, pollutant confidence, AQI by pollutant, total results, total pages, page number, page size

## Meersens's plans (2)

- [Meersens, free trial, GET /air/forecast](https://datacircle.dev/air-quality-apis/meersens/free-trial-get-air-forecast/llms.txt): $0.00 per 1,000, 33% complete
- [Meersens, contact us, GET /air/forecast](https://datacircle.dev/air-quality-apis/meersens/contact-us-get-air-forecast/llms.txt): 33% complete

## Meersens's calls for this API (2)

- `GET /air/current`: [Meersens, free trial, GET /air/current](https://datacircle.dev/air-quality-apis/meersens/free-trial-get-air-current/llms.txt)
- `GET /air/forecast`: [Meersens, free trial, GET /air/forecast](https://datacircle.dev/air-quality-apis/meersens/free-trial-get-air-forecast/llms.txt)

## Meersens's APIs (3)

- [Meersens: current weather API pricing, 2 plans](https://datacircle.dev/current-weather-apis/meersens/free/llms.txt)
- [Meersens: weather forecast API pricing, 2 plans](https://datacircle.dev/weather-forecast-apis/meersens/free/llms.txt)
- [Meersens: air quality API pricing, 2 plans, GET /air/forecast](https://datacircle.dev/air-quality-apis/meersens/free-trial-get-air-forecast/llms.txt)

## Meersens: air quality API alternatives

- [WeatherAPI.com, free](https://datacircle.dev/air-quality-apis/weatherapi-com/free/llms.txt): $0.00 per 1,000, 33% complete, live
- [Open-Meteo, free, GET /v1/air-quality, Air quality](https://datacircle.dev/air-quality-apis/open-meteo/free-get-v1-air-quality-air-quality/llms.txt): $0.00 per 1,000, 100% complete, live
- [Weatherbit, free trial, GET /v2.0/forecast/airquality](https://datacircle.dev/air-quality-apis/weatherbit/free-trial-get-v2-0-forecast-airquality/llms.txt): $0.00 per 1,000, 50% complete
- [Botoi, free](https://datacircle.dev/air-quality-apis/botoi/free/llms.txt): $0.00 per 1,000, 67% complete, live

## Sources

From each provider's own pricing page and docs, and from what providers tell us. We read this row from these pages on 2026-10-30.

- https://meersens.com/api/?lang=en
- https://meersens.com/free-trial-of-our-environmental-solution/?lang=en
- https://meersens.com/terms/?lang=en
- https://partners.meersens.com/
- https://partners.meersens.com/openAPI/openAPI.yml