Flagship air quality monitoring projects around the world

Clarity powers some of the world’s most ambitious outdoor air quality monitoring networks. Our Sensing-as-a-Service ambient air quality measurement solution empowers cities globally with real-time, high-quality outdoor air quality data to inform decisions and drive impact.

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500M+
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10,000+
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250+
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85+
countries with air
quality monitoring

Large-scale air quality monitoring networks powered by Clarity

See how major cities around the world use the natively solar-powered Clarity Node-S air quality sensor and Clarity Add-On Modules for air pollution measurement across large geographic areas. For more examples, see our Customer Stories page.

Air quality monitoring at the city scale, proven around the world

Use the interactive map below to explore a few of our largest, flagship air quality monitoring networks. To see all featured project visit our Customer Stories page.

Brazzaville, Republic of Congo

A network of Clarity Node-S sensors was installed in collaboration between Columbia University & Marien Ngouabi University. They are some of the first air quality monitoring devices installed in the region and will help to better understand and characterize air quality.

Accra, Ghana

The Breathe Accra Project is a community-led effort to tackle air pollution in the Greater Accra Metropolitan Area by making real-time, hyperlocal air quality data publicly accessible. Using Clarity’s Node-S sensors, the project empowers local communities and health authorities t

Jundiaí, Brazil

Monitoring will be performed with two Clarity Node-S, with funding provided through a donation from NB Capital Investimentos and Consultoria LTDA. The two monitoring stations that will be moved to different sites across the city.

Santiago, Chile

Insite has deployed a network of Node-S sensors in the vicinity of Santiago and are evaluating opportunities for further deployment.

Bogota, Colombia

Broward County, Florida

Broward County Florida schools use Clarity air quality sensors to monitor local pollution and engage students in analyzing data for projects.

Los Angeles, California

Los Angeles Unified School District deployed 200 Node-S sensors to create the largest air quality monitoring network of any school system in the United States.

Denver, Colorado

Clarity’s Node-S provides the DDPHE an affordable means of addressing community concerns and identifying hotspots, and has enabled the DDPHE to improve the resolution of their air quality monitoring network.

Sydney, Australia

Clean Air Schools Program: After a successful pilot program with UNSW, Clarity Nodes will be placed in classrooms and playgrounds to put accurate, real-time data at the fingertips of all Australians to enable them to make better decisions about their local environment and health.

San Francisco, California

Brightline Defense was awarded funding to deploy a network of 15 air quality monitoring devices in several San Francisco neighborhoods, which expanded to 19 because of increased community demand.

Perth, Australia

The Royal Automobile Club of Western Australia decided to take a stand against air pollution by investing in a cutting-edge air quality monitoring network to keep members and the public informed with 200+ Clarity Node-S air quality sensors.

Manila, Philippines

Clarity deployed a pilot network of Clarity Node-S devices throughout Metro Manila in partnership with Clean Air Asia and the Environment Management Bureau (EMB) to demonstrate the potential for low-cost sensors to support improved air quality management practices.

Bengaluru, India

A network of 30 Node-S air quality sensors was deployed at strategic locations frequented by vulnerable populations, with an emphasis on schools and hospitals. Project implemented by the GCHA & HEAL.

Kathmandu, Nepal

KMC officially unveiled the Kathmandu Metropolitan Air Quality Monitoring Dashboard on World Environment Day (June 5, 2025), with an initial network of 18 Clarity air quality sensors.

Bishkek, Kyrgyz Republic

50 Clarity Node-S air quality monitors were installed in Bishkek to help improve public health and quality of life. The project, funded by the Asian Development Bank, seeks to improve air quality in the capital and areas around the city with significant pollution levels.

Ar-Rayyan, Qatar

A network of Clarity Node-S sensors was colocated with reference equipment at the Qatar Environment & Energy Research Institute to provide air quality data for analysis and evaluate the potential for expansion of further indicative monitoring in Quatar.

Yerevan, Armenia

170+ Node-S sensors are deployed across Yerevan, making it one of the most extensive city-run air quality sensor networks in Europe. The sensors are strategically placed, with a focus on construction.

Chicago, Illinois

The Chicago Air Sensor Network is a public health initiative to install nearly 280 solar-powered air sensors across the city to provide neighborhood-level air quality data.

Richmond, California

Groundwork Richmond installed a network of several dozen Node-S to monitor pollution from freeways and a nearby refinery with funding from the AB 617 Community Air Grants Program.

Helsinki, Finland

The Finnish Institute for Atmospheric and Earth System Research used a network of Clarity Node-S sensors to develop a virtual sensor network capable of providing reliable air quality information.

Paris, France

The City of Paris installed a 150-sensor network of Clarity Node-S to better understand air quality around schools in the French capital. Partial funding provided by Bloomberg Philanthropies.

London, United Kingdom

In 2021, London installed more than 100 Clarity air sensors at London hospitals, schools, and other sensitive locations to complement existing high-quality reference-grade monitors and enable measurement of ambient air pollution at the neighborhood level.

Breathe Jersey

Thrive Jersey received a grant from the Government of Jersey to purchase and install air quality monitors across the Island, a project known as Breathe Jersey.

Solar-powered air monitoring equipment purpose-built for urban deployment

For successful deployment in real-world urban environments, air monitoring equipment must be flexible, rugged, and easy to install anywhere. Clarity’s air quality measurement devices are purpose-built for fast, reliable, citywide deployment, whether in downtown corridors, industrial zones, schools, highways, or remote communities:

  • Solar-ready for true off-grid operation: All Clarity devices are designed to run on solar power and engineered for long-term uptime on solar-battery systems, even in challenging weather.

  • Cellular-connected and cloud-native — Devices stream real-time data without the need for WiFi or complex IT infrastructure. Install it, connect it, and it works.

  • Compact, lightweight, and pole-mountable: Deploy hundreds or thousands of outdoor air quality sensors on streetlights, school buildings, community centers, or industrial fences. No trenching, power access, or permitting required.

  • Accurate, high-integrity ambient air quality data: From Remote Calibration to automated QA/QC workflows, Clarity’s integrated air quality monitoring system

  • Modular, plug-and-play sensor design — Easily add Add-On Modules to measure additional air pollutants without replacing the entire monitor, lowering long-term cost and simplifying network upgrades.

Trusted for real-world wildfire monitoring by air quality leaders

Don’t just take our word for it – leading organizations across North America are already using our air quality monitoring equipment to guard against wildfire smoke. Here are a few examples of how our customers have deployed Clarity for wildfire monitoring:

Rob Slocombe

Group CEO, Royal Automobile Club of Western Australia

At RAC we're all about leading change for the better — and what could be more important than having cleaner air to breathe for current and future generations of Western Australians?

Read Customer Story

Richard Stedman

Air Pollution Control Officer at the Monterey Bay Air Resources District

"We don’t have a lot of staff time to spend setting up or fine-tuning this equipment — Clarity’s managed service model allows us to multiply the number of sensors in our network with minimal additional overhead on our end. We're going from six particulate matter monitors to more than 20 — with one placed in each local municipality — so we expect to have more granularity in looking at how smoke impacts people across our three-county jurisdiction."

Read Customer Story

Joseph K. Lyou, Ph.D.

President & CEO of the Coalition for Clean Air

"The devices worked and the data was much better than other low-cost sensor data — Clarity pays attention to and cares about trying to get as accurate data as possible.”

Read Customer Story

Carlos A. Torres

Director of LAUSD's Office of Environmental Health and Safety

“The Know Your Air Network provides us with vital air quality information that can be used to inform real-time decisions to protect the health and well-being of our school communities. This air quality sensor network is unparalleled in its size and scope, demonstrating Los Angeles Unified’s commitment to providing the safest learning environment for our students.”

Read Customer Story

Kostadin Kostadinov

Mayor of the Municipality of Strumica

"We have installed sensor monitors at 3 locations to detect sources of air pollution. What does this mean? This means that every citizen of the municipality of Strumica is an inspector from today and will be able to monitor concentrations of PM2.5 particles from the sensor monitors, and this application will also be implemented in the Inspection Services of the municipality of Strumica, where air pollution will be monitored around the clock, and they will be able to react quickly to sanction negligent polluters. After electrified public transport and bicycle paths, with this innovative project, we prove that we are seriously investing in reducing air pollution in Strumica."

Read Customer Story

William Chevalier

Supervising Air Monitoring Specialist, Monterey Bay Air Resources District

"We wanted a network that would get real-time data out to the public immediately and show air quality changes in real-time — which we had been unable to do with our network of reference-grade equipment alone."

Read Customer Story

Why cities choose Clarity for city-scale air quality measurement

Environmental leaders don’t just need air monitoring equipment; they need a reliable air quality measurement system that delivers actionable insights, supports public transparency, and scales across entire cities. When it comes to monitoring air pollution and ensuring environmental safety, cities don’t just buy sensors—they invest in quality assurance for trustworthy data.

Here are a few reasons why Clarity air pollution measurement equipment is chosen for urban air quality monitoring by cities worldwide.

Unmatched reliability in real-world urban environments

Our outdoor air quality sensors are built to withstand heat, cold, humidity, storms, and long-term field exposure. With robust QA/QC and automated calibration workflows, agencies receive trustworthy data for PM₂.₅, PM₁₀, NO₂, NOx, ozone, CO, meteorological parameters, and other air pollutants.

A complete air quality monitoring system including hardware, software, and service

Clarity’s Sensing-as-a-Service approach combines the Clarity Node-S, flexible Add-On Modules, cloud analytics, and expert support, creating a seamless environmental monitoring system for agencies that need both accuracy and ease of deployment.

Proven air quality measurement  at scale, from cities to rural areas

Cities such as Chicago, London, Los Angeles, Manila, Philadelphia, Perth, Washington D.C. and Yerevan rely on Clarity’s air quality monitoring instrumentation to measure air quality at the city scale and engage communities in reducing air pollution exposure.

Actionable insights & service layer

Clarity provides more than just air quality measurement: we provide a full-stack air quality monitoring system designed for both community engagement and regulatory support. Our Add-on Services turn raw air pollution data into recommended actions to drive action across local authorities, schools, communities, and industry alike.

Lower cost, higher impact air quality monitoring

Clarity dramatically reduces the total cost of ownership for citywide air quality measurement, unlocking higher-resolution air quality data that delivers better insights for a fraction of the cost of traditional reference monitors.

Designed for public communication and transparency

Our OpenMap platform enables agencies to share ambient monitoring data directly with residents, schools, and decision-makers, building trust and supporting environmental justice initiatives.

Frequently Asked Questions

Can Clarity’s air quality measurement system replace regulatory air quality monitors?

Clarity’s outdoor air quality measurement system complements reference-grade air quality monitoring stations; it does not replace them. Clarity enhances spatial resolution, fills coverage gaps, and supports hyperlocal ambient monitoring at scale. Reference monitors are still needed for regulatory reporting and compliance.

What makes Clarity different from other air sensor brands?

A few of the things that set Clarity apart are our global scale, solar-friendly hardware, low maintenance, accuracy validated across hundreds of collocations, fast deployment, strong customer service, and a complete air quality monitoring system that includes much more than just sensors.

How does Clarity compare to consumer-grade air quality sensors?

Unlike consumer-grade air quality monitors, our platform is built for large-scale deployments in tough environmental conditions and supports integration into enterprise systems. It’s tailored for air pollution measurement projects at a large scale, such as municipal ambient air quality monitoring networks.

How does Clarity ensure the accuracy of its air quality measurement equipment?

We calibrate, validate, and quality-assure all data, ensuring you get reliable air quality measurements for your city. We partner with high-quality instrument makers for Add-On Modules, deploy remote calibration, use quality-control protocols, and provide analytics to flag drift or failure. This ensures trustworthy air quality data.

Who uses Clarity’s air monitoring equipment? What kinds of organizations do you work with?

Local authorities, environmental agencies, school districts, tribal air quality departments, AQMDs, industrial sites, community groups, and research institutions across 85+ countries use Clarity air quality monitoring. If your priority is accurate ambient air quality measurement or actionable air quality monitoring for decision-making, we’re the partner of choice.

What is the typical deployment scope for your outdoor air quality monitor networks?

We’ve deployed networks as small as a few air quality sensors up to hundreds of air quality monitoring devices in urban, rural, and industrial environments across 250 + cities and 85 + countries. For example, for Breathe London, we deployed 400+ devices across 63 km², and Chicago has deployed more than 200 Clarity Node-S air quality sensors across the city.

Is Clarity’s system suitable for community-based monitoring or citizen science?

Yes. Our platform supports community deployment, public-facing OpenMap sharing, and engagement with local groups—as demonstrated in large-scale case studies like the Breathe London air quality monitoring network.

How does the Clarity Node-S communicate data?

All devices communicate via secure cellular networks and stream measurements to the Clarity Cloud for real-time access and analysis.

Can Clarity air pollution sensors run fully off-grid?

Yes. All Clarity air quality monitoring instrumentation is specifically designed for solar-powered air quality monitoring and supports reliable solar-powered deployments using natively integrated solar (for the Node-S) or standard-size panels (for Add-On Modules).

How accurate is Clarity’s air quality measurement equipment?

Clarity uses high-quality sensor modules and robust calibration protocols, delivering near-reference accuracy for many pollutants—validated through diverse collocations across multiple environments. See our collocation results library for more information on air quality data performance.

How long does it take to deploy a Clarity air quality monitoring network?

Clarity air quality measurement equipment is designed with ease of use and ease of deployment in mind. Most customers deploy dozens to hundreds of outdoor air quality monitors within weeks—not months or years.

What are the maintenance requirements for Clarity air monitoring equipment?

Minimal. Clarity air monitoring devices self-report health status on the Clarity Dashboard for effortless monitoring of network health, and devices can be replaced quickly without specialized technicians. Our Sensing-as-a-Service model includes free replacements of Clarity devices under warranty.

How does Clarity handle data security, privacy, and compliance?

We follow industry best practices for cloud security, access control, and data governance to keep your air quality data safe. We can provide details relevant to your country / regulatory environment.

Who owns the data produced by Clarity air monitoring equipment? Will it be shared publicly?

With Clarity, you always own 100% of your air quality data, and you decide whether or not you would like to share the data publicly. Unlike other companies like PurpleAir and Airly, we will not make your data publicly available unless you explicitly opt in to public data sharing. We support integrations into your systems and ensure open access if needed.

How do agencies access data? What visualisation and reporting capabilities does the Clarity air quality monitoring system provide?

Through the Clarity Dashboard (analytics), APIs (integrations), and OpenMap (public data sharing). We provide real-time dashboards, historical trends, API access, and a public OpenMap layer for sharing with stakeholders. This supports actionable insight, not just raw data.

Can Clarity integrate with existing environmental monitoring systems?

Yes. We offer rich APIs for integration into dashboards, GIS systems, emissions inventories, and third-party platforms. With our API, you can integrate your air quality data into wider environmental monitoring programmes (e.g., emissions tracking, meteorology, IoT networks).

Does Clarity offer air quality data analysis or reporting services?

Yes. Add-On Services include custom insights reports, trend analysis, threshold alerts, exposure summaries, and stakeholder-ready communications.

How does pricing for Clarity air quality monitoring work?

Clarity’s subscription model reduces upfront cost and includes hardware, software, connectivity, calibration workflows, technical support, optional analytics services, and free replacement of devices under warranty. Contact us for more information and to get a quote for your custom air quality monitoring network.

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