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Open-Meteo Weather History Grid (ERA5)

Hourly historical weather on a 0.25-degree grid from ERA5 reanalysis, with temperature, precipitation and wind, trailing real time by several days.

Published by Open-Meteo (opens in a new tab)Cadence: hourly (reanalysis, ~4-5 day lag)Weather
Ask the agentOpen in Data (opens in a new tab) Open on map

About this data

Each row is one grid location and hour, with 2-meter air temperature, precipitation and 10-meter wind from ERA5 reanalysis via Open-Meteo. Reanalysis trails real time by several days, so it covers the past and never the current hour or the future. Because load, wind output and solar output all track these variables, it lets you tie past demand and generation to the weather that drove them.

What people use it for

  • Explain past load by temperature
  • Tie historical wind output to wind speed
  • Build weather-normalized history for a region

Where to use it

In Ask the Grid

Ask about it, see it live

The grid agent reads it to answer questions in every market it covers, and the map draws it as a layer. Every answer names the data it read and links back here.

Wind on the ERCOT map Wind on the CAISO map Wind on the NYISO map Wind on the PJM mapERCOT market NYISO market CAISO market

In ATG Data

Build with the full table

Schema, full history, coverage and query rules live in Data, where you can browse every row, run SQL and connect it to your own code.

Plans and access

Latest data

Open-Meteo releases this data 7 days after the fact, so the latest rows trail today by that much.

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Questions

Which data provider has Open-Meteo Weather History Grid (ERA5) data?
Ask the Grid has it, from Open-Meteo. You can browse every row in Ask the Grid Data, query it with SQL or the Ask the Grid API, reach it from an AI assistant over MCP, or ask the grid agent about it in plain English.
Where does Open-Meteo Weather History Grid (ERA5) come from?
It comes from Open-Meteo. This page links to the original publication, so any value can be checked against it.
How do I download or query Open-Meteo Weather History Grid (ERA5)?
Open the open_meteo.era5_grid table in Ask the Grid Data to browse every row and run SQL against it, call it from code through the Ask the Grid API, or connect an MCP client. Full history can be delivered on a schedule to Snowflake, Databricks or your own storage.
Can I ask questions about Open-Meteo Weather History Grid (ERA5) in plain English?
Yes. The grid agent reads this data when a question needs it, for example "how cold was it in texas during the last winter storm", and every answer names the dataset it read.