Simple, transparent AERMOD software pricing.
Compare Cumulus plans, start a 5-day free trial, and choose the right level of speed, scale, and support for your air quality workflow.
Perfect for consultants and small teams getting started with cloud-based AERMOD.
For engineering firms running multiple projects with demanding computational needs.
Tailored solutions for large organizations with specific compliance and integration requirements.
Frequently Asked Questions
What's included in the free trial?
All plans include a 5-day free trial with up to 2 projects. No credit card required to start. You can run real projects and evaluate the platform with your actual workflow.
How does billing work?
Plans are billed monthly or annually (with 10% savings). You can upgrade, downgrade, or cancel anytime. If you upgrade mid-cycle, we'll prorate the difference. If you cancel, you'll retain access until the end of your billing period.
Are results EPA-approved?
Yes. Cumulus uses EPA-validated algorithms and produces results identical to official AERMOD binaries. All calculations follow current EPA guidelines and are fully documented for regulatory submissions.
What about data security?
We take the security of your data seriously, we regularly review our application design and security posture, undergo regular penetration testing, and employ industry best-practices to keep your data yours.
Can I export my data?
Absolutely. You can export project files, input parameters, and results in standard formats at any time. Your data is yours—we just make it easier to work with.
Do you offer academic, regulatory, or bulk pricing?
Yes. We offer custom pricing for universities, research groups, regulatory agencies, and teams that need multiple seats or higher-volume usage. Contact us with a short note about your organization and expected usage, and we will put together the right option.
Ready to modernize your AERMOD workflow?
Start your free 5-day trial today. No credit card required.
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