Poor air quality is the most serious environmental health issue globally and the primary driving force for ambient air quality monitoring. Currently available reference-grade air quality monitoring stations provide accurate data, but the networks are sparse. New technologies make it possible to complement the existing measurements with compact air quality sensors.

Vaisala provides the latest technology for air quality monitoring, as well as measuring atmospheric weather conditions relevant to monitoring, estimating, and forecasting air quality. Vaisala Air Quality solution consists of a network of compact air quality sensors and weather stations, complete with data acquisition and visualization software, as well as optional air quality dispersion modeling.

  • AQT400 Series is a cost-effective range of air quality instruments for measuring the most common gaseous pollutants (NO2, SO2, CO, and O3) as well as particulate matter (PM2.5 and PM10). AQT400 Series sensors have been evaluated by the prestigious  AQ-SPEC test facility in the US.
  • WXT530 Series can measure six of the most important weather parameters: air pressure, temperature, humidity, rainfall, and wind speed and direction.
  • NM10 is an automated network management system that enables easy monitoring and control of sensors and provides easy access to observation data. Comprehensive data collected from the sensor network enables detailed reporting and analysis of environmental conditions.
  • Dispersion models, provided through our partners, can further improve situational awareness of air quality. The models provide a better understanding of emission sources as well as the spread of pollutants.


Vaisala sensor technology - the resolution for clean air

Vaisala Air Quality Network



Ambient air quality measurements are typically made with fixed ground-based air monitoring stations.


Supplementary air quality monitoring enables dense but cost-efficient measurement networks that increase the number of measurement points and improve the access to real-time air quality information.


Weather effects the air quality and air quality effects the weather. The trend is towards micro weather forecasts that can detect fluctuations between different parts of a city.

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