BREEZE® modeling software predicts the impact of air emissions, fires, and explosions. Air dispersion models such as AERMOD/ISC and CALPUFF include many productivity-enhancing features such as fully integrated GIS capabilities. BREEZE Incident Analyst and LFG Fire/Risk products are used to analyze numerous accident scenarios including dense/jet gas releases, LNG ruptures, and BLEVEs. BREEZE ExDAM, and its companion products, is used to predict structural damage and personnel injury resulting from explosions. Expert technical support and user training are available. Ask about our parallel processing versions of popular applications.

BREEZE Software Overview

BREEZE software is produced by Trinity Consultants, an environmental consulting firm that assists facilities with environmental regulatory compliance and strategic environmental management. BREEZE was launched in 1983 and has a long history of product development and excellent customer support. 

BREEZE is the market-leading air dispersion modeling software used by environmental professionals. For two decades, Trinity Consultants has provided air dispersion modeling software for environmental professionals. In 1983, Trinity introduced its first PC-based version of the EPA’s mainframe dispersion models, followed in 1987 by the creation of the BREEZE® family of products. In 1994, the first Windows® versions were introduced, greatly reducing model set-up time for users. Over the years, the BREEZE team continued to enhance functions and features of its products and add new dispersion models to the BREEZE family. Today, over 3,500 professionals in 70 countries worldwide use BREEZE software to assess the impacts of air emissions, fires, and explosions.

BREEZE software is easy to learn and use because it adheres to Microsoft® standards for intuitive, uniform graphical user interfaces, and features standardized toolbars, views, menus, commands, and dialog boxes. Our status as a Microsoft® Gold Independent Software Vendor (ISV) ensures that the software products we develop are compatible with new Microsoft operating systems and applications.

Many of the products include an integrated Geographic Information System (GIS), an intuitive data analysis and visualization interface tool, that enables modeled objects and results to interact and be displayed with a variety of geophysical data. The integrated GIS provides users with the most advanced geographic visualization tools available. AutoCAD® .dxf files and images in standard file formats (e.g., .bmp, .gif, .tif) can be imported into BREEZE software and used as base maps for easy visualization of affected areas.

Our products are supported by environmental and development professionals who are committed to providing excellent customer service including:

  • Excellent technical support
  • Continuing product innovation
  • Consistency with regulatory requirements
  • Custom development capabilities

Why BREEZE is the Choice of Modelers Worldwide

Experience: Over 20 years of dispersion modeling software history at the forefront of innovation.  We don't outsource the development of our applications to inexperienced developers without domain experience.  Our applications are developed and maintained by experienced professionals thus ensuring BREEZE's success and leadership in the dispersion software market.

Support: The BREEZE staff takes pride in its superior service.  We proudly support all of our products with technical knowledge assured by staff with degrees in Atmospheric Science, Chemical, Mechanical, and Environmental Engineering.  These are professionals with real world experience (not students or those offering software programs as a side business). We take great satisfaction in providing quick turn around times to your questions/problems and take quick action to find solutions so you can get back on track and meet deadlines.

BREEZE Innovations: BREEZE pioneered the development of easy to use air dispersion modeling software.  Our staff of modelers consistently suggest features that they know will improve their efficiency.  Features such as Prime Chart Utility in AERMOD, the Flowcharter in many of our air models, the Multi Scenario Processor (MSP) for AERMOD and ISC, and Gridded Computing services for CALPUFF.   BREEZE is always on the move striving to make your job easier.

Microsoft Certified Standards: BREEZE programs are developed using Microsoft standards and thus making the program easy to use and clearly organized.

BREEZE software products are used by environmental professionals worldwide to analyze the effects of air pollutant emissions and explosions. BREEZE is easy to learn and use because it adheres to Microsoft® standards for intuitive, uniform graphical user interfaces, and features standardized toolbars, views, menus, commands, and dialog boxes.

Most BREEZE products include an integrated Geographic Information System (GIS). This intuitive data analysis and visualization interface tool enables modeled objects and results to interact and be displayed with a variety of geophysical data. AutoCAD® .dxf files and images in standard file formats (e.g., .bmp, .gif, .tif) can be imported into BREEZE software and used as base maps for easy visualization of affected areas.

BREEZE Data Overview

The BREEZE Data team is staffed by professional meteorologists and environmental engineers who provide meteorological expertise in obtaining data for your modeling needs. Our team is knowledgeable about sources for data worldwide, potential problems with external data sets and the appropriate ways to address them, and the proper preprocessing techniques for model input.

Meteorological Data

BREEZE offers the following meteorological data:

  • MM5
  • Custom datasets

Terrain Data

BREEZE terrain data are available in Digital Elevation Model (DEM) and National Elevation Dataset GeoTIFF (NED) format. Three types of files are available:

  • 10 meter or 30 meter resolution NED GeoTIFF tiles (U.S. locations only)
  • 30 meter resolution DEM tiles (U.S. locations)
  • 90 meter resolution DEM tiles (Worldwide)

Custom Data from BREEZE

BREEZE meteorologists can customize meteorological data for a wide range of applications including raw data from on-site towers as well as other observation networks for input into air quality models. BREEZE trained meteorologists can also perform quality assurance analyses to ensure proper formatting and pre-process completeness on your data.

Our wealth of knowledge and extensive history in working with meteorological data make BREEZE the best choice for your custom meteorological needs.

BREEZE Services Overview

From modeling toxic gas dispersion to developing custom software and web applications, the BREEZE team can apply our specialized EH&S, modeling, and programming expertise on whatever challenges your organization faces. Our areas of expertise include:


  • Air quality modeling
    • Expertise in U.S. regulatory environment and worldwide
    • Models including AERMOD, CALPUFF, CAMx, CMAQ
    • Deep understanding of model algorithms
  • Accidental toxic/flammable gas release modeling
    • Risk assessment and planning
    • Facility siting and design
    • Accident response and analysis
    • Models such as INPUFF, DEGADIS, and SLAB
  • Explosion and fire modeling
    • Risk assessment
    • Facility siting and design
    • Accident analysis

Custom Environmental Software / Web Development:

  • Software applications
    • Real-time modeling
    • Data visualization
    • Data processing
  • Web applications
    • Air quality databases/portals
    • Remote environmental modeling platforms
    • Hosting of custom solutions
  • Scientific model development
    • Enhancements to existing models such as AERMOD and CALPUFF
    • Implementation of emission calculations, risk assessment methodologies, and other algorithms

The same staff whose technical knowledge underlies the BREEZE products trusted by thousands of environmental and safety professionals worldwide is ready to put their expertise to work on your issues. 


BREEZE Software - Custom Software Development

The BREEZE software team is experienced in developing a wide range of applications, including air dispersion, accidental release, and explosive safety assessment models. For over 25 years, this has been our main focus.

BREEZE Software - High-Speed Modeling

BREEZE software developers were the first to develop parallel software for U.S. EPA regulatory dispersion models. We saw an opportunity to reduce model runtimes while utilizing the advancements in multi-core computing technology. As a result, BREEZE created a cost-effective solution that delivers results in a fraction of the time compared to the traditional U.S. EPA versions.


BREEZE - Incident Analyst

Incident Analyst, the successor to the BREEZE HAZ suites, is our software suite designed to predict the potential toxic, fire, and explosion impacts from chemical releases.

BREEZE - MetView

BREEZE MetView is a powerful data analysis tool, capable of displaying a wide range of meteorological data formats. BREEZE MetView allows users to create fully customizable data tables and graphics to evaluate meteorological conditions at specific time intervals. Each display mode allows the user to extrapolate important correlations between several meteorological variables, or even view pollution concentrations against specific meteorological conditions.


BREEZE Software - Fundamentals of Air Dispersion Modeling

This intensive 2-day course focuses on the scientific and regulatory basis of dispersion modeling and provides a solid foundation for conducting modeling studies or reviewing studies prepared by others. Students learn how a dispersion model estimates the effects of atmospheric turbulence, stack conditions, building downwash, and nearby terrain to predict ground-level pollutant concentrations with emphasis on AERMOD and its associated screening tool, ...

Dispersion Modeling for Managers - Planning and Review

This is a one day course for environmental managers who review, manage, or use dispersion modeling as a tool for completing air quality studies as part of compliance studies or permitting submittals. The course covers the fundamentals of modeling concepts and regulatory requirements for state and federal permitting. Both screening and refined modeling tools are presented within the context of the basic physics of the atmosphere as well the practical ...



Practical Guide to Atmospheric Dispersion Modeling

An essential text for environmental professionals, the Practical Guide explains the use of dispersion modeling to assess the impact of emissions to the atmosphere.The Practical Guide addresses:plume behavior under various atmospheric conditionsconditions that promote the highest concentrations of air pollutantsthe use of meteorological datarefined techniques related to complex terrainalgorithm


5 Reasons to Perform a Consequence Modeling Analysis for Your Facility

The potential for accidental release of toxic chemicals to the environment is a daily threat for many industrial facilities and plants. These releases can occur very suddenly and unexpectedly, ...


Practical Air Dispersion Modeling Workshop - PA, USA

This three day workshop is intended for individuals with little or no prior knowledge of air dispersion modeling techniques for continuous releases. New regulations require dispersion models to be used to estimate the magnitude of pollutants from industrial sources on populations both near and far from the point of release. The course will focus on the fundamentals of air dispersion modeling with hands on application of the BREEZE AERMOD

AERMOD Computer Modeling Laboratory - IL, USA

This two-day course to provide hands-on instruction on the use of AERMOD, the U.S. EPA's preferred computer model recommended for estimation of ambient impacts of air pollutants emitted from industrial sources. Students will gain experience using the multitude of productivity tools in BREEZE AERMOD. The course will also cover how to process results for the new short-term NO2 and SO2 standards using the brand-new tool ...


Air & Waste Management Association’s Annual Conference & Exhibition (ACE) 2012, Pollutec Horizons 2011


Company details

Business Type:

Industry Type:
Air and Climate

Market Focus:
Globally (various continents)

Year Founded:


$1,000,000 US - $10,000,000 US


Environmental XPRT is part of XPRT Media All Rights Reserved