Who We Are
Onterris is a global environmental solutions company partnering with organizations to solve complex challenges where environmental pressures, regulatory expectations and operational risks intersect.
Sectors
Access deep environmental expertise tailored to your industry, with solutions built for real-world conditions.
Solutions
Prepare for escalating environmental risks with expert solutions designed to perform under pressure.
Our Thinking
Explore briefs, perspectives and articles that turn insight into action. Discover thought leadership that informs decisions and drives impact. See the ideas shaping environmental solutions and guiding your next move.
Cuture & Careers
Where brilliant people come together to turn environmental science into real-world progress for communities, industry and the planet.

Ambient Air Monitoring Services

Continuous air quality intelligence at your fenceline and beyond
An employee inspecting industrial equipment near a barbed wire fence.
Aerial view of a suburban neighborhood with rows of houses and tree-lined streets at sunset.
INTRO

Delivering real-time air quality insight for compliance, performance and trust

Air quality doesn’t stop at the fenceline, and neither does regulatory or community oversight. Facilities are increasingly expected to monitor and respond to emissions in real time, often under public scrutiny.

Onterris delivers ambient air monitoring programs that combine real-time monitoring technologies, in-house laboratory testing and analysis, mobile and fixed-site systems and an integrated data platform to help teams act quickly and communicate with confidence.

Supporting Your Industry

Organizations in highly regulated, complex industries rely on our comprehensive air quality testing and analysis expertise to ensure regulatory compliance, operational efficiency and environmental progress.
why it matters

Managing air quality beyond the facility boundary

  • Increasing regulatory focus on fenceline and community air monitoring
  • Growing expectations for transparency and proactivity from regulators, communities and stakeholders
  • Harder to identify and attribute emissions sources in real time
  • Operational and reputational risk from uncertain or delayed air quality data

Providing real-time air quality insights to support compliance and community confidence

Onterris helps clients design and implement ambient air monitoring programs that deliver real-time, defensible data across fenceline and community environments, supporting regulatory compliance, transparent stakeholder communication and informed decision-making.
An Onterris employee setting up air sampling equipment in a field
Areas of Expertise

Real-time ambient air monitoring expertise

Explore our ambient air capabilities that support confident compliance and community engagement. Don’t see what you’re looking for? Reach out to learn about our full suite of air testing services.
Fenceline monitoring
Community air quality programs
Mobile environmental laboratory services
Real-time air quality technology
Emissions and HAPs compliance testing
End-to-end environmental data platform

Related Services

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Turning Fenceline Data into Community Confidence for Phillips 66

Real-time fenceline monitoring and reporting program meets Colorado’s fenceline mandate and strengthens public trust

The HON MACT Rule: Shifting Compliance Monitoring to Emissions Intelligence

From passive sampling to real-time diagnostics, facilities must rethink how they collect, interpret and act on emissions data.

Real-Time Air Monitoring for Industrial Emissions

Learn how real-time air monitoring helps industrial operators detect emissions faster, strengthen compliance and turn monitoring data into operational control.