AirNode and AirIntel –
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 behavioural levels.

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

Winner of the Best Accuracy Award for outdoor PM2.5 at this year’s Air Parif Microsensors Challenge

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) carbon monoxide (CO), and ozone (O3), as well as temperature and humidity.

Expansion options for carbon dioxide (CO2), sulphur dioxide (SO2), and other pollutants are available. As well as gas and particulate sensing, AirNode also incorporates unique self-calibration functionality that significantly improves the measurement data.

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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.

Combined, AirNode and AirIntel provide local authorities, businesses and communities with detailed, localised, at-a-glance air quality insight at street-level. This dense 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
  • Warranty

Key features/Benefits


Highly accurate measurement of urban pollution

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

Low-cost, dense network configuration

Low total cost of ownership plus high performance enables a dense network of sensors reporting in real-time at neighbourhood and street level

Real-time air quality intelligence

Use data with AirLabs’ AirIntel air quality visualisation, analysis and forecasting platform or proprietary platforms via open APIs

Wireless connectivity

Compatible with a variety of wireless communication protocols including WiFi, GSM, NB‑IoT and LoRa

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

Filter type

Compact, low-cost air quality monitoring device provides high quality measurements of PM2.5, PM10, nitrogen dioxide (NO2), ozone (O3), carbon monoxide (CO) and carbon dioxide (CO2)*.


WiFi or cellular

WiFi or cellular

1 min, 5 min, 60 min

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.


8 x 8 x 9 cm (bare), 10 x 10 x 10 (with shield)




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. Carbon monoxide (CO) and sulphur dioxide (SO2) are available as optional extras.

How does the AirNode work?

The AirNode employs a 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. Depending on local requirement, the standard AirNode can be fitted with additional electrochemical sensors, such as sulfur dioxide (SO2) and carbon monoxide (CO).

The AirNode measures total particulate mass in a specified size range (PM1, PM2.5, PM4 and/or PM10) with a precision of 10% using an actively-sampled optical sensor.

For CO2 the AirNode is equipped with a nondispersive infrared sensor with an accuracy of 3% of the measured value or +/- 30 ppm. In addition the AirNode employs micro-electromechanical sensors (MEMS) for temperature and humidity with an accuracy of 3% providing local observational data and improved compensation for environmental variability. The AirNode has a variable sampling frequency (from 1/minute to 1/hour) that can be adapted to environmental conditions and user’s needs. The data upload rate can be selected and is typically 5 minutes.

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 in the AirNode please contact our Sales team here.

What are the applications of the AirNode?

The AirNode can be applied in many different settings. Some examples include:

  • Smart cities: air quality monitoring in cities and urban environments
  • Smart buildings: well-being in the workplace, at school, in hospitals, retail, restaurants and hotels
  • Public transport infrastructure: demonstrate healthy air for the travelling public
  • Geofencing: of ports, mines, construction and industrial sites


How do I see the AirNode data?

The AirNode reports detailed air quality measurements minute by minute to the AirIntel data management system. Together the AirNode network and sophisticated data analysis algorithms of the AirIntel data management system capture and identify pollution hot spots, at a localised level, and provide comprehensive analysis and visualisation to enable deployment, management and optimisation of pollution lowering initiatives.

Can I download the data?

All the data is available for export in different formats (CSV, XLS) within any specified time window.

Can I view the data through my own platform?

An access token can be set up through AirIntel for API level data access, enabling the live measurements to be incorporated into other platforms.

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

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


The AirNode benefits from a comprehensive 2 year manufacturer warranty, applicable from the date of purchase. To get support with your product, please contact our Support team 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.