Cloud-based AERMOD and AERMAP workflows

Submission-ready air quality reports without the hassle

Run models in the cloud, iterate faster, and generate submission-ready reporting without installing software or managing hardware.

Built with standard EPA AERMOD and AERMAP models
Outputs aligned with regulatory submission standards
No software to install or hardware to manage
Quickly iterate and refine models without long runtimes
Supports National Ambient Air Quality Standards (NAAQS)
Reporting formats aligned with common state regulatory requirements

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Designed for consultants and environmental engineers using AERMOD workflows

Why Cumulus

Built for real regulatory modeling workflows

Cumulus brings cloud-based speed, simpler project management, and report generation to the AERMOD process while preserving the trust and rigor engineers need.

Why teams switch

Finalize projects faster

Cumulus removes the setup and reporting overhead around air dispersion modeling so your team can focus on project decisions and delivery.

Cloud processing No software installs, no dedicated modeling PC

Faster iteration Run, refine, and compare scenarios without long local runtimes

Automated reporting Generate required air quality reports ready to submit to state and local regulators

Regulatory-first setup

Start with standards-aware defaults so teams can frame projects quickly without rebuilding the same compliance scaffolding every time.

Visual project building

Define sources, receptors, terrain, and meteorology inside a visual workflow that reduces context switching and manual coordination.

Faster compliance decisions

See impacts clearly, adjust plans earlier, and move from scenario testing to submission-ready reporting in one system.

Product Tour

Air Quality Reports in Seven Easy Steps

Making air quality reports hassle free is what we're all about. Here's how we do it.

Cumulus interface with built-in NAAQS support.

Start with NAAQS support already built in

Instead of bolting compliance logic on later, Cumulus puts National Ambient Air Quality Standards directly into the project workflow so engineers can frame work around the limits that matter from the beginning.

Define sources and pollutants in one place

Source definition and pollutant setup live on the same screen, which makes multi-pollutant projects easier to assemble and much easier to review before runs are submitted.

Cumulus screen showing sources and multiple pollutants configured together.

Cumulus meteorology map showing available meteorology files.

Find existing meteorology files fast

Where data is available, Cumulus makes it easier to locate meteorology files visually so teams can spend less time searching through inputs and more time progressing the model.

Account for terrain and elevation fast. Like really really fast.

The world isn't flat, but running aermap is time consuming and painful. We take all of the hassle out, click one button and you're done.

Cumulus terrain and elevation visualization for AERMOD setup.

Add complex sources visually

We give you a visual way to add roads, pits, area sources, and buildings, too.

Lay out receptors in a few deliberate clicks

With built in support for the most common receptor requests, we make sure that you've modeled all area impacts a regulator will look at.

Cumulus impact visualization used to assess compliance.

Visualize impacts and adjust before they become problems

We make it easy to iterate and update projects over and over again. Until everything is just right.

Full Walkthrough

Putting it all together

Run through an entire project in 90 seconds.

Pricing

Simple pricing for every air quality need

All plans include cloud-based processing and automated report generation. Try it free for 10 days and run your first model in minutes.

Starter

$79/mo

$948/yr

For occasional modeling and small projects

+10 model runs/month

+1 submission-ready EPA report/month

+1 active project

+Additional reports: $149

Annual plan includes +5 bonus model runs/month

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You Might Be Wondering

What does the free trial include?

You get 10 days to map a project, run a model, and evaluate the reporting workflow so you can see how Cumulus fits into your delivery process.

Do I need to install anything?

No. Cumulus is cloud-based, so your team can run projects and generate reports without installing desktop software or maintaining modeling hardware.

Is this designed for regulatory work?

Yes. Cumulus is built around standard AERMOD and AERMAP workflows, with outputs and reporting designed around common regulatory submission expectations.

Who is it for?

It is designed for consultants and environmental engineers working with AERMOD workflows, from occasional modelers to teams handling high project volume.

Get started

Model your first project in minutes

Start your 10-day free trial and start generating submission-ready air quality reports without the hassle.

Start free trial