The new weather benchmark

You can experience our weather forecasts and apply them to your unique use-cases in a number of different ways. Determining which weather insights you need depends on your desired business outcomes and what information you want to prioritize. Keep reading to find out how you can start working with our weather forecasts today to improve your decision-making tomorrow.


Improving weather forecasts one satellite at a time

Weather disrupts 70% of businesses worldwide and costs more than $600 billion each year in the U.S. alone.

Climate change has a big impact on global business operations. Spire Weather addresses these challenges and provides data and forecasts to help reduce operational risks and transform weather variability into a competitive advantage.

A truly global reach

Spire Weather’s constellation of satellites creates a unique global observation dataset and delivers incredible accuracy, previously only available in local and well-developed regions, to the entire planet.

An innovative approach

Spire leverages Radio Occultation technology and assimilates atmospheric density information into its own weather model runs, providing more valuable forecast and a greater accuracy.

Improving weather accuracy

A complete weather observation dataset is the starting point of any weather forecast. Spire is currently collecting 3x more radio occultation data than any other commercial entity on the planet, and this number is increasing with our frequent satellite launches continuously improving the quality of our weather forecasts.

Designed for business

Spire forecasts are delivered by an intelligent and easy-to-use API that can be quickly integrated into your own products and services. In addition, our team of specialists are available to help you have a great experience and extract the most value out of our product.

Make better decisions

Hourly forecast output 4 times a day up to 10 days.

More valuable forecasts

50+ high precision weather variables available anywhere on the planet in 1/8th-degree resolution (aprox. 12km).

Quick and easy to use

Integrate advanced weather forecasts, available in JSON or GRIB2 formats, directly into analytics platforms quickly and easily.


How do our weather solutions solve your challenges?



The greatest risk to safety and fuel emissions is extreme weather. Having access to reliable, easy-to-use weather forecasting is paramount to the wellbeing of all seafaring vessels. Spire Weather helps to :

  • Sharpen critical information like reducing fuel consumption and CO2 emissions
  • Minimize risks and reduce disruptions on difficult routes such as the Tokar Gap in the Red Sea
  • Reduce “cargo sweat” by leveraging precise weather information
  • Improve E-navigation and add value to maritime intelligence applications
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As each season shows an increasing amount of extreme weather events and each region faces unique weather related difficulties, the decision-making process has become more and more complex for farmers.

  • Weather drives the grower’s decisions on the daily life of the farm
  • Crops need an appropriate climate, a fertile terrain, controlled moisture and sun for a healthy growth
  • Farmers are facing a major challenge to continuously supply food to a fast growing global population
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With a constant focus to protect passenger safety and improve fuel efficiency, it is more important than ever to have access to global weather forecast data. Aviation forecasters must also consider clear air turbulence, icing and winds aloft data to support scheduled flight operation for safety and efficiency.

  • Save Fuel: Global weather visibility for long haul flight planning
  • Wind and Turbulence: Improve safety for passengers and flight crews with enhanced data
  • Flight Level Forecast: Quick and easy integration into global weather applications
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  • Providing accurate wind readings for air, land, airborne and aerial resupply to ensure the safe delivery of men and all classes of material
  • Determining where and when visibility obscurants will occur, offering opportunities to maximize airborne ISR, target containment and kinetic strike applications
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What are Radio Occultations


Spire satellites collect radio signals sent by GPS/GNSS satellites on the other side of the planet.


As these signals pass through the atmosphere, they are refracted.


By analyzing the refraction, Spire is able to understand the atmosphere from the ground up to 120 km.


An unbiased measurement of weather conditions

Radio occultations provide an unbiased very accurate measurement of the atmospheric conditions without variations over time.

Homogeneously spread around the world

Unlike weather balloons that only collect data twice per day from specific sites, Spire satellites scan the entire planet 24/7 including remote regions like the oceans and the poles.

Observing the weather from the ground up

Local weather is not an isolated phenomenon – this vertical (up to 120 km) and horizontal scanning creates a unique understanding of the global weather evolution.

An unrivaled technology powering Spire Weather models

Spire has the unique ability to assimilate the collected atmospheric data into a state of the art weather model.

Featured case study

The secret to a successful fuel consumption model

Oldendorff was able to improve their fuel consumption simulation model and calculate paths that consumed the least amount of fuel with Spire Weather

Oldendorff, one of the world’s largest dry bulk shipping companies, which ships and trans-ships over 300 million tons of bulk cargo every year used Spire Weather to improve the accuracy of their fuel consumption model.

By adding Spire Weather to their simulation model, Oldendorff was able to improve their fuel consumption simulation model and calculate paths that consumed the least amount of fuel. Innovation and the importance of data analytics are at the heart of Oldendorff’s strategy, making them one of the most data-driven companies in the maritime industry.


“People in the maritime industry still underestimate the value that good weather data can bring to their business.”

Mike Pearmain, Chief Data Scientist – Oldendorff Carriers

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Their Challenge

Reduce fuel costs and CO2 emissions by integrating weather insights into a fuel consumption model in order to:

  • Navigate more efficiently by minimizing the time of transit and fuel consumption.
  • Be ready for the IMO 2020 requirements to anticipate the cost volatility of low sulphur fuel and optimize course schedule

The Solution

Definition of all the possible paths

Oldendorff created a model considering origin, destination, voyage constraints, and navigation conditions to generate a list of possible routes.

Adding Spire weather forecast to each path

Next they forecasted future weather conditions, adding a new layer of information to evaluate potential efficiencies (ie, currents and waves) and risks of taking each path.

Vessel simulation model

Vessels respond differently to weather and ocean conditions. Creating a digital twin simulates fuel consumption according to vessel characteristics and route conditions.

The results

Using Spire Weather, Oldendorff were able to drive 2.5% more accuracy to their fuel consumption model which is equivalent to a prediction 5.61 times closer in terms of fuel consumption over a seven-day period. This translates to:

  • 5.6 Tons of fuel consumption
  • 17.5 Tons of CO2 emissions.

“If we only save 1% of fuel on every trip every day, we could significantly reduce our CO2 emissions’’

Mike Pearmain, Chief Data Scientist

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Create a real COMPETITIVE ADVANTAGE with Spire Weather

A complete weather observation dataset is the starting point of any weather forecast. Spire is currently collecting 3x more radio occultation data than any other commercial entity on the planet. Our unrivaled radio occultation technology powers Spire’s weather models and sets a new benchmark for weather forecasts.

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They trust our data
  • Spire partners
  • European space agency

“The maritime industry still underestimates the value that good (weather) data can bring to their business.”

Mike Permain
Chief Data Scientist, Oldendorff Carriers


If you’d like to learn more about using our data please review our terms of use. Our APIs are developer-friendly so you can plug and play, effortlessly adding new data and key insights to your systems. In addition to the complete documentation, we offer outstanding support that helps you start using data and building apps quickly.


Free data sample

  • Free sample
  • Maritime weather ( basic+maritime)
  • Grib2 format
  • 7-day forecast
  • Region of Singapore
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Start building your weather applications with Spire today.

Get access to a number of advanced data-analytics, choose the package that suits your needs, and integrate it into your workflow in no time thanks to our easy-to-use APIs and on-hand support team.

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