Skip to content


It is often said that 80% of data analysis is spent on the process of cleaning and preparing the data. - Hadley Wickham, Chief Scientist at RStudio

Why Oikolab?

Data scientists or analysts often spend days or weeks looking for and processing historical weather data before they can begin their analysis. Here’s where Oikolab comes in – we do the work, so you don’t have to. We save you the most valuable, scarce, and non-renewable resource in the world – your time.

We provide post-processed datasets from national weather agencies such as NCEP/NOAA, ECMWF, and Environment Canada. These data are often publicly available, but come in a format (GRIB) that is very time consuming to download and use.

ERA5 Reanalysis Data

ERA5Land Reanalysis Data

GFS Forecast Data

GEFS Forecast Data

CFS Forecast Data

HRRR Forecast Data

SILAM Forecast Data

Ready to jump right into your analysis? Oikolab has post-processed hundreds of terabytes of weather data that you can access in seconds - whether you require 1 month or 80 years of weather data.

Here are some examples of what you can do with Oikolab API:

  • Building Simulation - Download AMY EPW files for any location from 1940 to present.
  • Asset Management - Have assets in hundreds of locations? Download time-series weather data for all locations with a single API call.
  • Climate Change Analysis - Get decades of weather parameter time-series data in seconds.

Dataset Overview

We're always adding datasets. If you need something that we don’t have, please feel free to reach out and ask!

Type Dataset Resolution Coverage Updates Source
Reanalysis ERA5
from 1940
from 1950
GFS 13/25km 16 days 6 hrs NCEP
HRRR 2.5km 2 days 6 hrs NCEP
CFS 100km 9 months Daily NCEP
Ensemble Forecast GEFS 25km 10 days 6 hrs NCEP
Air Quality Forecast SILAM 20km 5 days Daily FMI