How IoT is Giving Clean Air a Voice

Clean air is achievable and the technology to get there is already here. MultiTech’s LoRaWAN® and cellular IoT solutions connect the sensor networks that help cities, industries, and communities breathe easier.

Clean Air Day is a moment to celebrate what’s possible and the progress already being made. Across the UK, cities, schools, and industries are using real-time data to make smarter decisions about the air we all share. At MultiTech, we’re proud to be part of that story.

This year’s theme is “Let’s use our voices to clean up our air” – and we love that. But at MultiTech, we’d add one thing: the most powerful voice for clean air isn’t just a campaign or a conversation. It’s data. Continuous, precise, and impossible to ignore. When the right sensors are connected and insights flow in real time, the people who can make a difference, facility managers, city planners, environmental officers, school headteachers, can act fast, act smart, and act with confidence.

Data in. Clean air out.

Clean air improvements don’t happen by accident. They happen because someone, somewhere, had the data to back up a decision – to reroute traffic away from a school gate, to open a window in a stuffy classroom, to flag an emissions spike at an industrial site before it became a compliance issue.

MultiTech’s LoRaWAN® and cellular IoT solutions connect networks of sensors that measure the things that matter most: particulate matter (PM2.5 and PM10), nitrogen oxides (NOx), CO₂, VOCs, humidity, and temperature. Indoors and outdoors. Across cities, industrial sites, and the buildings where people live, learn, and work every day.

By the numbers

90%
The proportion of time people spend indoors on average – making indoor air quality just as important as the air outside.

2–5×
How much more polluted indoor air can be compared to outdoor air in poorly ventilated buildings.

99%
The share of the global population living in areas where air quality exceeds WHO guideline limits – the scale of the opportunity is enormous.

£4.32 billion
The projected value of the global indoor air quality monitoring market by 2034, up from £2.47 billion today – demand for connected sensor solutions is accelerating fast.

Three environments where it makes a real difference

Urban air quality.

LoRaWAN® sensor networks deployed across city streets and neighbourhoods give local authorities real-time visibility of pollution hotspots. That means faster, evidence-based decisions on traffic management, planning applications, and public health – and cleaner air for the people who live there.

Industrial emissions monitoring

Cellular IoT connectivity keeps industrial operators ahead of their environmental compliance obligations in real time. Automated alerts, reliable data logging, and early warning of emissions spikes mean issues get resolved before they escalate – protecting communities and reputations alike.

Indoor air quality

The air inside our buildings matters just as much as the air outside. CO₂ and VOC sensors in classrooms, offices, and homes flag poor ventilation before it starts affecting concentration, productivity, or long-term health. We’ve already seen what a difference this makes – from protecting students in schools to helping housing associations identify damp and mould-risk conditions before they become tenant complaints.

Clean Air Day is one day a year. But the opportunity to improve the air we breathe is every single day – and the data to do it is already within reach.

Want to see how MultiTech is helping communities breathe easier?