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EarthSense Zephyr
Compact real-time air quality monitor

The EarthSense Zephyr® is a compact, real-time air quality monitor designed to provide reliable, indicative measurements of ambient air pollution across a wide range of applications. It helps organisations gain a clearer understanding of local air quality by monitoring key pollutants and environmental conditions at a much higher spatial coverage than traditional reference monitoring stations alone.
Built for deployment in urban environments, industrial sites, construction projects, transport corridors, schools, and community monitoring networks, the Zephyr® delivers continuous air quality data that can be accessed remotely through the EarthSense MyAir® platform or integrated into existing systems via APIs.
The monitor measures a range of pollutants, including particulate matter (PM1, PM2.5, and PM10) and selected gases such as nitrogen dioxide (NO₂), nitric oxide (NO), and ozone (O₃), depending on the sensor configuration. It also records environmental parameters such as temperature and relative humidity, providing valuable context for air quality analysis.
A key advantage of the Zephyr® is its flexible deployment capability. Available with mains, battery, or solar-powered options, the system can be installed quickly in both temporary and long-term monitoring locations. Its compact design and optional GPS functionality also make it suitable for mobile monitoring applications.
EarthSense describes the Zephyr® as an MCERTS-certified indicative monitor that supports organisations in identifying pollution hotspots, understanding trends, demonstrating compliance, and making evidence-based environmental decisions. The monitor forms part of the broader EarthSense ecosystem, which combines monitoring, modelling, and advanced analytics to deliver actionable air quality intelligence.
Key benefits include:
| Real-time air quality monitoring |
| Measurement of particulate matter and gaseous pollutants |
| Remote data access and cloud-based analytics |
| Flexible mains, battery, and solar-powered deployment options |
| Network-scale monitoring for towns, cities, and industrial sites |
| Alerts, reporting, and trend analysis capabilities |
| Integration with the EarthSense MyAir® platform and APIs for data visualisation and management |


