What Persium does

Persium is a London-based environmental technology company that builds and deploys IoT air quality, noise, and environmental sensors integrated with a digital twin software platform. Founded in 2023 by Ali Yousefian (CEO), Alex Yousefian (COO), and Cameron Yousefian (CTO), the company has grown to 1-10 employees and operates dual headquarters in London and Abu Dhabi (via the Hub71 ecosystem), with active deployments or sales activities across 11+ countries including the United Kingdom, France, Denmark, Greece, the United Arab Emirates, Qatar, Saudi Arabia, Kenya, the United States, the Philippines, and Vietnam.

The product portfolio comprises three proprietary hardware lines - the Persium Pod (an outdoor sensor monitoring up to 12 pollutants down to PM0.3, solar-powered, with built-in 3D wind sensing), the Persium Pill (a high-precision indoor sensor for research and LEED v5 buildings), and the Persium Node (a compact sensor measuring every 15 seconds, with a Node View variant featuring live on-device display) - feeding two software platforms: the Persium Dashboard (interactive analytics with AI-driven forecasting) and Persium MapView (a 3D digital twin with wind-aware dispersion modelling), plus the Persium API for programmatic data access. Sensors are manufactured in the UK under the Made in Britain trademark, and the company claims coverage of 5,000+ monitoring stations and 100+ countries through its data API.

Persium monetises through a combination of hardware sales, software subscriptions, and API data access, with quote-based pricing targeting government agencies, transport operators (TfL, RATP, Port of London Authority), local councils (Southwark, Dudley, Westminster), research institutions (Imperial College London, Kenya Research Network), and adjacent verticals including airports, oil and gas, mining, construction, and LEED-certified buildings. The company has secured approximately $1.5M in cumulative grant and accelerator funding between 2023 and 2025 from Innovate UK, Eureka Eurostars, EIT-Urban Mobility, Hub71, and the Santander X UK Awards programme, and was named the 2025 Santander X Global Award Scaleup Category Winner.

Name

Persium

Legal name

Persium

Website

https://persium.co.uk

Company type

Private

Founded year

2023

Operating status

Operating

Headcount range

1–10 employees

Short description

Persium builds proprietary IoT air quality sensors (Pod, Pill, Node) and a digital twin software platform (Dashboard, MapView, API) for governments, transport operators, councils, and research institutions across 100+ countries, delivering hyperlocal 500m environmental intelligence and source apportionment.

Ownership category

akta.pro rank

Product category

Air Quality & Environmental Monitoring Sensors

NAICS

Other Measuring and Controlling Device Manufacturing (334519), Navigational, Measuring, Electromedical, and Control Instruments Manufacturing (3345)

SIC

Industrial Instruments For Measurement, Display, And Control (3823), Measuring & Controlling Devices, Nec (3829)

akta.pro primary industry

Continuous/Remote Monitoring Systems (IoT Sensors, Telemetry, Networks) (EUAHACAL)

Keywords

• Air quality sensors
• Environmental monitoring
• Digital twin platform
• IoT air sensors
• Air quality data API

Headquarters

HQ city

London

HQ country

United Kingdom

HQ region

Europe

Offices2 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Technology or R&D, Supply Chain, Personnel, Operations, Marketing or Sales, Infrastructure

Revenue model

1. IoT Hardware Sales: Sale of proprietary environmental sensors (Persium Pod, Pill, Node) as hardware products with various power and connectivity configurations for continuous outdoor/indoor deployment.
2. Software Subscriptions: Recurring subscription access to Persium Dashboard and MapView platforms for data visualisation, analytics, and digital twin modelling.
3. API Data Access: Programmatic access to real-time and historical air quality data via API, enabling integration into third-party systems and applications.

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels5 records

Core offering

Persium sells an integrated end-to-end ecosystem of proprietary IoT environmental sensors (Persium Pod for outdoor, Persium Pill for indoor, Persium Node for dense deployments) combined with digital twin software platforms (Dashboard and MapView) and an air quality data API. The sensors detect up to 12 pollutants including ultrafine particles down to PM0.3, with built-in 3D wind sensing for source apportionment. The software provides real-time visualization, AI-driven forecasting, and 3D digital twin modeling for governments, transport operators, and infrastructure companies.

Product overview

Persium is an end-to-end ecosystem of accurate IoT sensors and advanced digital twin modeling for air quality, noise and environmental data monitoring. The product portfolio consists of three hardware sensor lines: Persium Pod (outdoor sensor for cities and large deployments with solar power and 3D wind sensing), Persium Pill (indoor research-grade sensor for buildings and LEED certification), and Persium Node (compact high-resolution sensor for dense deployments measuring every 15 seconds with an on-device display variant called Node View). These sensors feed into two software platforms: Persium Dashboard (comprehensive data visualization and analytics with AI-driven forecasting) and Persium MapView (live mapping with 3D digital twin visualization). Data is accessible via the Persium API for integration purposes. The ecosystem is designed for hyperlocal environmental intelligence at global scale.

Differentiator

Problem solved

Functional benefit

Brands

• Persium Pods: Advanced outdoor air quality, noise & environmental sensor designed for continuous outdoor deployment across real-world environments.
• Persium Pill
• Persium Node
• MapView
• Dashboard

Products and services

• Persium Pod The most advanced outdoor air quality, noise and environmental sensor in the Persium range, monitoring up to 12 major air pollutants including PM0.3, PM1, PM2.5, and PM10. Features built-in 3D wind sensor for source apportionment, solar-powered operation, and flexible deployment connectivity via 3G/4G LTE, GSM, WiFi, or LoRa. Designed for continuous outdoor deployment across cities, industrial sites, and transport corridors.
• Persium Pill High-precision indoor air quality sensor designed for academic research and LEED v5 buildings. Monitors key indoor pollutants including CO2, PM2.5, VOCs, and detects ultrafine particles down to PM0.3. Uploads data to Persium Cloud every 1 minute. Supports LEED v5 O+M IAQ Performance credits for building certification.
• Persium Node Compact networked sensor for dense deployments, measuring every 15 seconds (240 data points per hour). Captures short-lived emission spikes that conventional sensors miss. Features wind-aware data for real-time source apportionment, always-on cloud connectivity via 4G, LoRa, or WiFi, and ModBus protocol support for integration with building management and industrial control systems. Provides publication-grade, timestamped, audit-ready data for compliance and research.
• Persium Node View Variant of the Persium Node featuring a live on-device display for real-time air quality readings visible directly on screen without requiring login. Built for field technicians to verify sensor performance and confirm installation accuracy on-site. Measures at 15-second intervals and uses hub-networked architecture uploading to cloud every 2 minutes.
• Persium Dashboard Comprehensive air quality intelligence software platform providing interactive visualization and analysis. Features real-time concentrations, AQI comparisons, dominant pollutant tracking, AI-driven forecasting, heatmaps, isobar visualization, customisable dashboards and reports, deep pollutant insights, and secure data infrastructure. Used by cities, operators, and environmental teams to monitor, understand, and report air quality data.
• Persium MapView Live air quality map and digital twin visualization platform. Features real-time sensor data with spatial context and health guidance in an interactive map. Includes 3D digital twinning placing air quality data within real-world spatial environments, dynamic heatmaps, isobar animations, concentration gradients, and worldwide coverage from 5,000+ monitoring stations updated hourly. Includes health recommendations aligned with WHO standards.
• Persium API Global real-time air quality data API providing coverage across 100+ countries from dense sensor networks. Delivers data at 500m x 500m street-level resolution. Provides AQI and pollutant-specific data for PM10, PM2.5, NO2, CO, SO2, and O3. Health risk recommendations are included with every data point. Designed for integration into third-party systems and applications.

Quantifiable outcome

• 5,000+ monitoring stations globally
• +5 more outcomes

Named customers9 records

Segments9 records

Ideal customer profiles6 records

Technology focussed Yes

API detail

Has API

Yes

API docs

API detail

Core technology

AI maturity

App detail

Integration1 record

AI capability3 records

Feature6 records

Partnerships

Four partnerships are on record, tiered flagship, core and minor.

• Hub71flagshipStrategic or Co-development Partner · 1 January 2024Abu Dhabi's global tech ecosystem connecting high-potential startups with capital, government partners, and enterprise leaders. Persium joined Cohort 18 for GCC expansion across transport, real estate, and urban infrastructure.
• Transport for London (TfL)flagshipStrategic or Co-development Partner · 1 January 2024Part of high-level consortium including TfL, RATP (Paris), and Imperial College London, focused on deploying low-cost, high-accuracy sensing technology for subsurface air quality monitoring in metro environments.
• Imperial College LondoncoreStrategic or Co-development Partner · 1 January 2024Research consortium partner for subsurface air quality monitoring, bringing academic expertise to metro environment monitoring project.
• Singapore Deep-Tech Alliance (SDTA)minorStrategic or Co-development Partner · 1 January 2024Singapore-based alliance supporting deep-tech startups in the Global Incubator Programme.

Scale indicators6 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• Aeroqual: New Zealand-based manufacturer of compact air quality monitoring sensors (AQM 65, Series 500) used by governments, researchers, and industrial customers. Closest comparable to Persium Pod/Pill/Node with similar hardware-led model and government/research customer overlap.
• AQMesh: UK-based provider of outdoor air quality monitoring pods sold primarily to local authorities and environmental consultants. Directly comparable product (small outdoor sensor pods) and overlapping UK council customer base as Persium.
• EarthSense: UK air quality monitoring company (Zephyr sensor and Air Quality Portal) targeting UK local authorities and research institutions. Direct competitor in the same geography with similar municipal government customer profile.
• Clarity Movement: US-based air quality sensor network operator serving governments and communities with low-cost outdoor monitoring hardware. Comparable in deploying dense urban sensor networks and exposing data via API.
• Aclima: US-based hyperlocal air quality and emissions intelligence company combining mobile and stationary sensing with a data analytics platform. Closely comparable end-to-end hardware + software + data model serving government and corporate customers.
• Kunak: Spanish manufacturer of air quality monitoring stations and software for smart cities, industrial sites, and environmental compliance. Direct competitor in the IoT air quality sensor market with similar government and industrial customer base.

Broad incumbents

• Vaisala: Finnish global leader in environmental and industrial measurement (weather, air quality, CO2). Operates broadly across environmental monitoring rather than specialising in the IoT/smart city niche Persium targets, but is the dominant incumbent in air quality instrumentation.
• IQAir: Swiss-based air quality technology company offering consumer/professional air quality monitors, indoor/outdoor sensors, and a global real-time air quality map. Adjacent competitor with broader consumer exposure and a global air quality data platform comparable to MapView.

Others

• Sensirion: Swiss manufacturer of environmental and flow sensors (PM2.5, VOC, NOx, CO2) sold as components to OEMs. Indirectly comparable as a sensor supplier that competes at the component layer and could enable competing solutions.

Emerging players

• AirGradient: Open-source air quality monitoring hardware and platform provider serving citizen scientists, schools, and communities. Comparable end-use cases (outdoor air quality monitoring with data dashboards) but lower enterprise grade and different price point than Persium.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks6 records

Key highlights6 records

Customer concentration

• LinkedInuk.linkedin.com/company/persium
• Instagraminstagram.com/persium.io
• Xx.com/persium_aq

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 records

Funding overview

Funding rounds5 records

Investors1 record

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Persium