Freeware Products

Lakes Environmental is proud to offer you the following software products as freeware.


Designed for screening level air dispersion modeling using the US EPA SCREEN3 model. With conservative calculations and simplified input requirements, it is ideal for initial air dispersion screening runs.



WRPLOT View is a fully operational wind rose program for your meteorological data. It provides frequency analysis, visual wind rose plots, and generates wind rose statistics and plots for several meteorological data formats.


Percent View

Percent View is a utility that computes rolling averages and generates percentile concentrations for the following US EPA air dispersion models: AERMOD, ISCST3, and ISC-PRIME.


Other Software Solutions Categories

Lakes Environmental offers a wide range of environmental software products, covering various categories of air quality. Click on the categories below to find the right software for your project.