---
title: "Get Forecast Irradiance"
method: GET
path: "/data/forecast/radiation_and_weather"
tags: ["Forecast", "Radiation and Weather"]
---

# Get Forecast Irradiance

`GET /data/forecast/radiation_and_weather`

Get irradiance and weather forecasts for the requested location from the present up to 14 days ahead, derived from satellite (clouds and irradiance over non-polar continental areas, nowcast for approx. four hours ahead) and numerical weather models (other data and longer horizons).

## Query parameters

- `output_parameters` string[]
- `hours` integer, nullable
- `period` 'PT5M' | 'PT10M' | 'PT15M' | 'PT20M' | 'PT30M' | 'PT60M', nullable
- `tilt` number, float, nullable
- `azimuth` number, float, nullable
- `array_type` string, nullable
- `terrain_shading` boolean
- `latitude` number, double, nullable, required
- `longitude` number, double, nullable, required
- `format` 'json' | 'csv', nullable

## Response `200`

OK

- ForecastsDataResponse
  - `forecasts` object[], nullable

---

[API](https://skmtc.net/solcast/apis/solcast-api.md) · [All operations](https://skmtc.net/solcast/apis/solcast-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/solcast/solcast-api/revisions/591461e66c79/schema)