Fenceline Air Monitoring
Explore our range of turnkey fenceline air quality monitoring solutions chosen by environmental consultants, health and safety managers, industrial operators, and regulatory authorities around the globe.
Dust Sentry
Measurement Parameters
PM1, PM2.5, PM4, PM10, TSP, optional particulate counts for 6 channels: 0.3, 0.5, 1.0, 2.5, 5.0, and 10 microns, Noise, Meteorological
Maximum Modules
Dust Sentry with PCX module = PM1, PM2.5, PM4, PM10 and TSP
Dust Sentry (Nephelometer) = PM1, PM2.5, PM4, PM10 or TSP
Power Supply
Mains, solar, battery
Operating Range
-10 °C to +45 °C (14 °F to 113 °F)
(-40°C low range with winterization kit)
AQS 1
Measurement Parameters
PM1, PM2.5, PM4, PM10, TSP, VOCs, O3, NO2, CO, H2S, SO2, CH4, Noise, Meteorological
Maximum Modules
Simultaneous measurement of particulate matter (PM) and up to three gas modules
Power Supply
Mains, solar, battery
Operating Range
-10 °C to +45 °C (14 °F to 113 °F)
(-40°C low range with winterization kit)
AQM 65
Measurement Parameters
PM1, PM2.5, PM10, O3, NO2, CO, CO2, SO2, VOCs, H2S, CH4, benzene, nitrogen oxides (NOx), Noise, Meteorological
Maximum Modules
Measure up to 10 common pollutants simultaneously, plus up to 10 environmental factors (e.g., temperature, humidity, pressure, wind speed and direction)
Power Supply
Mains recommended
Operating Range
-35 °C to +50 °C (-31 °F to 122 °F)
A little about our fenceline monitors
Aeroqual’s fenceline air quality monitoring solutions (Dust Sentry, AQS 1, and AQM 65) are purpose-built for the outdoors and integrated with cutting-edge cloud software to deliver precision air monitoring across a range of applications (from brownfield redevelopment to dust control, occupational health and safety, mining, and more). A rugged IP65 weatherproof enclosure ensures optimal performance even in harsh conditions. A flexible, modular design gives you the freedom to add further gas and environmental parameters as required.
Our fenceline monitoring systems deliver accurate air quality data with excellent correlation to U.S. EPA reference analyzers. These solutions are factory calibrated using reference NIST materials, ensuring data is traceable back to international standards.
Reduce time spent on site and access air quality data and alerts from anywhere while minimizing stakeholder risk.
Particulate matter:
PM1, PM2.5, PM4, PM10, TSP
Gases:
O3, NO2, CO, CO2, SO2, VOCs, H2S, CH4, benzene, nitrogen oxides (NOx)
Meteorological:
Temperature, humidity, noise, barometric pressure, precipitation, solar radiation, wind speed and direction
Key technology of our fenceline air quality monitors
Our fenceline monitoring solutions utilize best-in-class air sensor technology to deliver highly accurate, defensible data you can trust. Discover some of the key features that make Aeroqual the optimal choice for consultants.
Rugged and portable enclosure
Built for purpose, with an IP65 waterproof enclosure. Features solar shielding armor and high-reflective powder coating, reducing the thermal impact on measurement and components. Integrated Thermal Management System available for optimal performance in extreme climates (AQM 65 only).
If your fenceline monitors need to be moved regularly, a lightweight 15-hour lithium-ion battery option is available (region dependent).
Automatic baseline correction (ABC)
Pioneered by Aeroqual, automatic baseline correction (ABC) continuously auto-corrects the ‘zero’ baseline for gas measurement every 60 seconds, eliminating cross-interferences and measurement drift, and producing reliable near-reference performance.
Interference-free measurement
The NO2 module design incorporates an electrochemical sensor with Aeroqual’s Automatic Baseline Correction (ABC) technology, maintaining measurement stability. An integrated O3 filter guards against interference for exact NO2 measurement.
Reference calibration
The AQS 1 and AQM 65 are factory calibrated using NIST traceable reference materials - the same used to calibrate U.S. EPA FEM analyzers. The high-purity gas standards are prepared under ISO 6143, ensuring traceability to reference materials from National Metrology Institutes.
Pumped sampling system and inlet heater
A pump sampling design provides a reliable flow of air to the sensor modules, no matter the conditions. Built-in filters protect gas sensors from airborne dust, extending the instrument’s operating life.
An integrated inlet heater reduces the effect of high humidity on particulate measurement, ensuring more accurate measurements.
Software optimized for local regulations
Go beyond simple data acquisition with remote two-way communication for better data and more efficient operation. Wireless and cellular data connectivity available. An optional remote technical support service maximizes the useful life of the sensors while keeping high-quality data flowing.
Aeroqual Cloud currently supports SCAQMD Rule 1466 and simplified NY DER-10, with more regulations to follow.
Solutions that make your project easier
Set up in under 3 minutes
Our monitors are quick to set up on site, generating real-time data within 3 minutes.
Alerts within 60 seconds
Get real-time alerts within 60 seconds, configurable to user-defined thresholds. Data reports in 1-minute intervals.
Streamlined regulatory compliance
Aeroqual OneView provides automated site contribution calculations with built-in report templates tailored to local regulations, including South Coast AQMD Rule 1466, NY DER-10, and NJ PAM.
Case studies
Case Study - Brownfield Redevelopment
Building a healthier Brooklyn: Aeroqual and Langan's collaboration on the Alafia Estate
Case Study - Brownfield Redevelopment
Perimeter monitoring during a waterfront stabilization project in Queens
Case Study - Brownfield Redevelopment
Being a Good Neighbor Requires Real-Time Alerts and Defensible Air-Quality Data
“The Aeroqual stations gave us defensible data for multiple pollutants within budget and were easy to deploy onsite.”
Kenneth Tramm
Principal, Modern Geosciences
FAQs
Fenceline monitoring is the continuous measurement of air quality at the boundary of a site, such as an industrial facility, construction project, or remediation area. It is used to detect emissions, protect nearby communities and workers, and demonstrate regulatory compliance by tracking pollutants like particulate matter and gases in real time.
Aeroqual provides real-time fenceline air monitoring platforms that combine outdoor-grade monitors with cloud-based software. These platforms deliver live data, alerts, reporting, and compliance tools for industrial sites, remediation projects, and urban environments.
Aeroqual is a global provider of continuous fenceline air monitoring systems used by environmental consultants, industrial operators, and regulatory authorities. Our solutions support 24/7 monitoring with near-reference accuracy, remote diagnostics, and automated reporting.
Aeroqual offers scalable environmental monitoring software designed for citywide and community air monitoring programs. Our software supports large fenceline and ambient networks, enabling cities to monitor air quality cost-effectively while maintaining high data quality and regulatory confidence.
Outdoor air quality is measured using fixed or portable monitors that sample air continuously and measure pollutants such as particulate matter (PM2.5, PM10), gases, and meteorological conditions. Aeroqual’s outdoor fenceline monitors are purpose-built for harsh environments and provide real-time data via cloud software.
Outdoor air quality sensors for ventilation and exposure management can be purchased directly from Aeroqual. Our fenceline monitoring systems measure particulate matter, gases, and weather conditions to support informed ventilation, dust control, and mitigation strategies.
Aeroqual is widely used for citywide air quality monitoring due to its modular hardware, scalable software, and ability to manage large networks of outdoor monitors. Our solutions support public reporting, alerts, and long-term trend analysis for urban environments.
Fenceline air quality monitors can be purchased directly from Aeroqual. Customers can request a quote to configure hardware, power options (solar, mains, battery), sensors, and software based on site requirements and regulatory needs.
Real-time fenceline air monitoring solutions
Gather defensible air quality data tailored to local regulations with a real-time fenceline air quality monitoring solution.