Monitor pollution, act on intelligence

Where are the pollution hotspots and where is it clean?

We know what causes air pollution but where does it go and where does it concentrate?

Effects from the weather and ‘the canyon effect’ from buildings in urban environments channel pollution leaving some places with high levels and other places with lower levels. We need to be able to see and understand this in order to do something about it; at policy, operational, and behavioral levels.

It is also important to understand where pollution levels are lower to promote and enjoy outdoor activities such as walking and cycling.

Air pollution increases mortality from stroke, heart disease, lung cancer and acute respiratory infections

The AirNode

Urban air pollution is one of the greatest risks to health worldwide, causing seven million premature deaths every year 1. To tackle this threat, many cities are pioneering the use of air quality monitoring stations to address the harmful impact of pollution. But these large and expensive devices often lack the granular detail to make decisions at the neighborhood level where people are most affected.

AirNode is designed to take these initiatives to the next stage, adding a layer of ‘street-level’ detail to the data gathered by existing reference stations. Typically deployed in dense networks, these highly accurate, low-cost sensors gather real-time data that measures PM1, PM2.5, PM4, PM10, nitrogen dioxide (NO2), ozone (O3) as well as temperature and humidity.
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Talk to us about our solutions

Not sure which solution suits your need? Contact us to discuss your requirements.

We are air quality management experts. We’ll provide you with the best solution for your situation.

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Research-led solutions

We are pioneers in clean air technology backed by rigorous research and data.

AirNode provides local authorities, businesses and communities with detailed, localized, at-a-glance air quality insight at street-level. This air-quality monitoring system complements existing reference sites and delivers actionable data to support clean air zone policies and enforcement.

  • Features
  • Technical spec
  • FAQ
  • Documentation

Key features/Benefits


Highly accurate measurement of urban pollution

High-quality measurements of PM1, PM2.5, PM4, PM10, NO2, and O3 as well as temperature and humidity

Low-cost, dense network configuration

Low whole life cost plus high performance enables a dense network of sensors reporting in real-time at neighborhood and street level

Real-time air quality intelligence

Visualize minute by minute, street level data to engage stakeholders and promote collective action to improve air quality. Track changes and improvements.

Wireless connectivity

Sensors connect and transmit data wirelessly from the urban environment to the screen.

Flexible mounting options

Designed to be conveniently mounted to street lighting columns, building facades and other street furniture at the optimal position of 2.5–3 meters above street level.

Long life, high-performance

Combines best in class components and self-calibration mechanisms. State-of-health monitoring for long-term, low-maintenance operation.


Real-time air quality intelligence

A system based on a dense network of sensors reporting in real-time provides the granularity required to issue meaningful air quality alerts and updates at a neighbourhood or street level

Hyper-local pollution hotspot detection

High spatial and temporal resolution of in-situ sensor data accurately captures the distribution and evolution of pollution hotspots

Street-level forecasting

High-resolution air quality data from a densely populated network supports advanced data analysis. The data feeds learning algorithms for robust analysis and prediction of air quality

Actionable data for policy and enforcement

Advanced modelling and predictive analytics that inform policy and community operations at a detailed, street-by-street level

Technical specifications


WiFi or cellular

Data reporting 4G

Every minute

Operating conditions

-25oC, -65oC, 1 to 95% humidity, 800 to 1200 mbar

Cloud based data

The AirNode smart sensor automatically sends data to the cloud and with its self-calibration and automatic baseline drift correction, it makes high-resolution air pollution monitoring affordable. Ideally suited for large scale deployment in IoT networks it provides municipalities and citizens with real time, high-resolution visibility of air pollution in their city.


150 mm x 195 mm x 55 mm


< 1kg


Outdoor ready/ rain and solar shielded

Sampling system

Active sampling (fan based). With automatic self-calibration ( baseline)


Delivered calibrated

Power supply

5V and max 2W

Sensor performance characteristics


  • PM2.5 and PM10: 0-999µ/m3
  • NO2: 0-150ppb
  • Ozone: 0-150ppb


  • PM2.5 and PM10:1µ/m3
  • NO2: 1ppb
  • Ozone: 1ppb

Precision (gas) accuracy(PM)

  • PM2.5 and PM10: 10µ/m3 or 25%
  • NO2: 5ppb or 25%
  • Ozone: 5ppb or 25%

Response time

  • PM2.5 and PM10: 60s
  • NO2: 60s
  • Ozone: 60s

AirNode Technical specs

Frequently asked questions

What is the AirNode?

The AirNode is AirLabs’ compact, low-cost Air Quality Monitoring device that provides high quality measurements of both particulates and gases. The pollutants it can detect and measure include PM1, PM2.5, PM4, PM10, nitrogen dioxide (NO2), ozone (O3), and carbon dioxide (CO2) as well as temperature and relative humidity.

How does the AirNode work?

The AirNode employs best-in-class electrochemical (EC) sensor developed, manufactured and calibrated in the UK to measure ozone (O3) and nitrogen dioxide (NO2). The EC cell is integrated with the AirLabs ALEC digital sensor electronics board that delivers improved signal-to-noise and stability compared to off-the-shelf digital individual sensor boards (dISBs). The detection limit for the EC + ALEC system at 1/min sampling frequency is 1 ppb for both NO2 and O3.

The AirNode measures total particulate mass in a specified size range (PM1, PM2.5, PM4 and/or PM10) using an actively-sampled optical sensor.

How big is the AirNode?

The AirNode measures 150 mm x 195 mm x 55 mm including the shield that protects the sensor from the outdoor elements. The AirNode weighs less than 1kg.

How can I purchase the AirNode?

If you are interested in implementing an AirNode please contact our Sales team here.

How do I see the AirNode data?

The AirNode reports detailed air quality measurements minute by minute to a data management system. The AirNode network combined with the sophisticated data analysis algorithms of the data management system capture and identify pollution at a localized level and provide comprehensive analysis and visualisation to enable deployment, management and optimization of pollution lowering initiatives.

What is the process if I have an issue with a product?

To get support with your product, please contact our Support team on here.

AirNode and AirIntel in action

Marylebone Station became London's first 'clean air station.' AirLabs air filtration solution removes 95% of pollutants, including nitrogen dioxide and harmful particulate matter from dedicated clean air zones at this busy urban terminus

Staffordshire County Council introduced 18 AirNode sensors from AirLabs . Data from the AirNodes travels to the centralised platform in the cloud, AirIntel, where a range of detailed air quality metrics (PM1,PM2.5,PM4, PM10, CO2, SO2, NOx , Ozone) can be seen in real time and from where data analysis can be performed.