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SENSOR

PM2.5

PM2.5 measures the concentration of fine particles smaller than 2.5 microns in

the air and provides insight into particle pollution from indoor sources.

What is PM2.5?

PM2.5 is the measurement of fine airborne particles with a diameter of less than 2.5 microns, typically expressed in micrograms per cubic meter (µg/m³). These particles include dust, soot, smoke, pollen fragments and chemical compounds, and they are small enough to be inhaled deep into the lungs. PM2.5 often enters buildings from outdoor sources such as traffic, construction and wildfire smoke, but it is also generated indoors by cooking, candles and cleaning. Measuring PM2.5 helps building, workplace and facility teams track particle pollution and see when ventilation or filtration needs adjusting.

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Stop reacting. Start optimizing.

Gain complete visibility into your building operations, eliminate budget surprises,
and transition from "firefighting" to high-performance management.
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Built for facility mangers

Save time

→ Get a quick overview of your entire portfolio from anywhere

→ Prioritize worst-performing spaces first

→ Generate compliance reports in minutes, not hours

Stay ahead of problems

→ Real-time alerts when conditions exceed thresholds

→ Use trend data to predict and prevent issues

→ Fix problems before they become complaints

Seamless integration

→ Connect to your BMS for automated HVAC optimization
→  Receive alerts in Slack, Teams, or email
→  API access for custom dashboards and analytics

 

Easy to deploy and maintain

→ Fully wireless sensors, no complex cabling
→  Long battery life means minimal maintenance
→ Scale easily as your portfolio grows

 

● THE WHY 

Why does PM2.5 matter?

PM2.5 isn't just an outdoor problem. Fine particles easily find their way indoors, where they can affect health, comfort and wellbeing.

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Protect occupant health


PM2.5 can irritate the eyes, nose and throat, trigger asthma and allergies, and worsen heart and lung conditions. Children and older people are especially vulnerable, making PM2.5 monitoring important in schools, healthcare facilities and offices alike.
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Respond to outdoor pollution


Traffic, construction and wildfire smoke can quickly raise indoor PM2.5 levels. Real-time data shows when outdoor pollution is entering your building, helping you adjust ventilation, reduce air intake and protect occupants during high-pollution periods.
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Maintain HVAC performance


Rising PM2.5 levels can be a sign that filters are clogged or ventilation systems need servicing. Monitoring helps you plan maintenance based on actual conditions rather than fixed schedules, keeping air clean while extending the life of your equipment.
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PM2.5 over time

Track fine particle levels across rooms and buildings in real time. See when outdoor pollution or indoor activities cause PM2.5 to rise and follow trends over time, so your team can adjust ventilation, plan filter changes and keep the air clean for everyone inside.

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● GET STARTED

See PM2.5 levels in your buildings

Curious about the PM2.5 levels in your buildings? We'll show you what PM2.5 looks like in the Airthings dashboard.

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Stop ventilating empty rooms

Our sensors detect when people are actually present. Integrate with your BMS to reduce HVAC run-time by up to 30%.

See how Toma saved 26% on energy bills ->

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Resolve complaints with facts

When a tenant claims air quality is poor, share a live link to the data. Prove your building is performing - or spot the exact issue instantly.


Explore dashboard ->

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