Model Evaluation Toolkit

Free toolkit for evaluating atmospheric dispersion models

The Model Evaluation Toolkit is a free toolkit for evaluating local and regional atmospheric dispersion models.

Key features of the Model Evaluation Toolkit:

• Compare one or more modelled datasets with in situ observed data
• Analysis can be based on pollutant concentrations and/or forecast indices and alerts
• Output includes statistics and attractive report-ready graphs
• Group analysis results by monitoring station, station type, by pollutant or by model
• Wide range of supported modelled data formats including ADMS, CMAQ, CAMx, WRF-Chem, EMEP, CHIMERE and CAMS
• Easy to use graphical user interface
• Uses openair tools
• Graphical output includes state of the art target plot as developed by the FAIRMODE initiative
• Observed data from UK monitoring networks can be downloaded and imported automatically

Click here to download the Model Evaluation Toolkit (version 5.4, released June 2026):Model Evaluation Toolkit (.zip, 80 MB)

Once downloaded, you should extract the contents of the zip file to your computer and follow these installation instructions: (.pdf, <6 MB)

You will find a comprehensive User Guide here:(.pdf, 5 MB)