TD Environmental Services, LLC specializes in collecting and analyzing data using new technologies to provide insights about the air we breathe. Our focus on innovative solutions helps you effectively address air quality and weather challenges. Our services span from evaluating technology, deploying sensors, managing data, performing in-depth analytics, and providing clear insights.

We provide comprehensive and cost effective services that are built from 25 years of experience, sound science, and using new technologies to meet your environmental needs.

Tim briefing senior EPA staff on low-cost sensors
Discussion at Precision Public Health Summit

Why choose us


In-depth experience

Over 25 years of experience helps create tailored solutions to your complex problems.

Innovative Solutions

Embracing new technology, yet grounded by science and experience, provides you with a custom solution.

Creativity & Teamwork

Proven ability using teams, technology, and ingenuity to address environmental challenges.

About Tim

Tim Dye has over 25 years of experience in environmental field monitoring, data management, and public communication. A visionary and entrepreneur, he has created air quality and meteorological applications both domestically and internationally. He is a widely recognized leader in air sensors and Internet of Things (IoT) technologies for environmental applications. While at Sonoma Technology, Tim developed innovative systems for air quality data management systems and forecasting programs for public outreach (www.AirNow.gov, www.StateAir.net, www.SmogCity2.org). Tim has the proven ability to transform traditional programs by using a mixture of technology, creativity, and leadership.

Areas of expertise include:
• Low-cost, air quality sensor evaluation and deployment
• Air quality monitoring
• Meteorological monitoring
• Data management system design and operations
• Analysis of air quality data
• Insights to air quality markets
• Citizen Science and Environmental Justice applications

Tim offers a unique blend of strong technical skills, in-depth knowledge, and creativity to develop innovative solutions for a wide range of stakeholders from community groups, to government agencies, to industrial companies.


MS – Meteorology, Penn State University
BS – Earth Science – Meteorology, Millersville University of Pennsylvania

Certifications and Memberships

Certified Consulting Meteorologist (CCM #619) 2003-Present
American Meteorological Society
Air and Waste Management Association

Tim Dye

Innovator | Air Sensor & IoT Expert | Program Manager | Meteorologist | Citizen Scientist | Maker