Frequently asked questions

Data & Software

Can I buy your air quality data for my area?

You can get immediate access to air quality data in your city or region. Based on satellite data and other data sources we provide daily air quality data for every region in the world.
This first visualisation of air quality data in your city can be the next step to tracking your climate goals.
By subscribing to one of our Data Management Platforms you will get access to the defined set of data e.g. from public measurement stations, IoT measurement devices, satellites, ….

For higher spatial and temporal resolution we integrate all available air quality data (i.e. official measuring stations, passive tubes & our proprietary IoT devices) in our Air Quality Platform.

Our dashboard & straightforward API allow you to intuitively visualise, compare and analyse high-resolution air quality data.

Contact us for more detailed information, our data products and to arrange a call with one of our experts to find out how to best suit your needs.

In which format will I receive your data?

We provide our data as documented API and in our intuitive dashboard. This enables you to integrate and analyse air quality data with your other data sources within your own platforms & systems but also to visualise air quality in an entirely new way.

If you have specific data requirements, we are happy to discuss these with you. Please contact us.

How granular is the air quality data you provide?

The spatial and temporal resolution can be adjusted to your specific needs. The spectrum ranges from daily satellite data with a resolution of about 3.5 x 7km to monitor points of interest to real time data with a resolution of about 100 x 100 metres or less for use cases such as eco-sensitive traffic management.
Every city and terrain is different which is why we define the particular parameters such as amount of sensors, project area etc. individually. Please contact us for more information on your best project parameters

Can you integrate our existing data into your models and vice versa: how do I integrate your data into my smart city platform?

Hawa Dawa integrates the data from our IoT devices with other data sources such as weather, land use, geo and satellite data. For deeper analyses we also correlate data sources such as traffic, mobility or vehicle velocity – depending upon use cases and requirements.
Measured and modeled data as well as analyses can be easily accessed via our straightforward API, providing you the basis to integrate environmental data into your smart city platform.

Are your measurements compatible with EU air quality measurement standards?

At this point in time, there are no established norms on EU or government level that certify a network of sensors. However, the EU is currently developing such a framework to consider low-cost sensors. We are happy to provide you with more information on this topic. Just send your questions using our contact form.
We are watching this development with great interest and set up our test protocols on the basis of these EU recommendations.
Furthermore, we are continuously testing our Sentience devices in the field next to reference devices and in cooperation with the departments of the environment in Bern (Switzerland), Bavaria and Rheinland-Pfalz. The results of this testing get published in our yearly technical reports which we are happy to provide to you.

What is the benefit of combining both hardware and software?

Low cost sensors measure air quality in a different way than the official measuring stations and due to their small size they can be implemented as a network, delivering air quality data for all important parts of the city.
After the values have been measured by the hardware, they need to be calibrated on the software side in order to eliminate cross sensitivities between the pollutants and environmental factors. Hawa Dawa uses complex machine learning algorithms to further increase the quality of the data.
Our deep knowledge of sensors enables us to appropriately calibrate and analyse the data which results in the highest data quality. Covering the entire value chain from hardware, firmware, software and joint product development makes us and our data unique on the market.

Why do the data need to be calibrated?

For software calibration, Hawa Dawa uses complex machine learning algorithms to eliminate the cross-sensitivity of the pollutants to each other and with other environmental parameters. This artificial intelligence is further refined the longer the measuring devices are in the field. Calibration is an essential step in quality control and assurance.

Hardware

How extensively did you test your devices?

When it comes to air quality measurements, data quality is crucial. In order to reach sufficient equivalence for indicative measurements covering all seasons, we run continuous field testing since April 2018 together with Swiss Post and the city of Bern.
Results from the test demonstrate that our environmental data highly correlates with the official measuring stations and show a high reliability. We are also field testing our devices next to official measuring stations in Bavaria and Rheinland-Pfalz to ensure that our affordable, CE certified devices produce high quality data and take low cost standards to a new level.

What pollutants do you test for?

We measure World Health Organization (WHO) critical pollutants: nitrogen dioxide (NO2), particulate matter (PM2.5 and PM10), ozone (O3), other pollutants to enable our complex calibration as well as environmental factors including temperature, relative humidity and pressure.

Do your Sentience devices have technical certification?

Yes – our sensor devices are CE-certified and are ready to be deployed into the field.
Furthermore, we undertake continuous field testing next to reference stations in Bern, Bavaria and Rheinland-Pfalz.

What is the benefit of combining both hardware and software?

Low cost sensors measure air quality in a different way than the official measuring stations and due to their small size they can be implemented as a network, delivering air quality data for all important parts of the city.
After the values have been measured by the hardware, they need to be calibrated on the software side in order to eliminate cross sensitivities between the pollutants and environmental factors. Hawa Dawa uses complex machine learning algorithms to further increase the quality of the data.
Our deep knowledge of sensors enables us to appropriately calibrate and analyse the data which results in the highest data quality. Covering the entire value chain from hardware, firmware, software and joint product development makes us and our data unique on the market.

What is the ideal height for the installation?

According to the German 39. BimSchV the Sentience devices need to be installed at a height between 1.5 – 4 metres. Our recommendation is to install the Sentience device at a height of minimum 2 m to allow for a relevant measurement and also protect the device as much as possible.

Business

Can I buy your air quality data for my area?

You can get immediate access to air quality data in your city or region. Based on satellite data and other data sources we provide daily air quality data for every region in the world.
This first visualisation of air quality data in your city can be the next step to tracking your climate goals.
By subscribing to one of our Data Management Platforms you will get access to the defined set of data e.g. from public measurement stations, IoT measurement devices, satellites, ….

For higher spatial and temporal resolution we integrate all available air quality data (i.e. official measuring stations, passive tubes & our proprietary IoT devices) in our Air Quality Platform.

Our dashboard & straightforward API allow you to intuitively visualise, compare and analyse high-resolution air quality data.

Contact us for more detailed information, our data products and to arrange a call with one of our experts to find out how to best suit your needs.

We have very specific goals and prerequisites regarding air quality data – how can you help?

We are experts in designing and co-developing new data products together with our partners, based on our high-resolution environmental data.
Depending on your particular needs, we can help to integrate our data into your existing (smart city or traffic) platforms or build your existing datasets into our models to produce entirely new insights for effective, tailored measures to combat air pollution.

You can review some of the use cases for environmental data here.
For an evaluation of your specific case or working out innovative business models with air quality data contact us for more information

What are the lead times for your IoT Sentience devices like? When can we start measuring in the field?

Once we know your specific project requirements, we can provide you with detailed information on timescales, costs, installation and deployment.

Lead times for our Hawa Dawa Sentience devices usually are about 12 weeks.

As soon as we know what you would like to measure and where, we can get started! Please contact us to discuss your specific project requirements and lead times.

Where are your sensors already deployed in the field? Who are your main customers?

We already have our IoT sensors deployed in more than 20 cities with customers across Germany, Switzerland and Ireland. Our projects are diverse; we work with dedicated cities, corporates and project partners to deliver air quality data and mitigate air pollution.
To achieve this goal we cover several use cases ranging from eco-sensitive traffic management, eco-routing, multi-modal mobility, air quality monitoring to smart health. Learn more here.

What are the first steps to take to measure air quality in my city?

Please reach out to one of our air quality experts by submitting your details through our contact form here. We would be very happy to arrange an initial phone call to discuss your specific needs, questions and help identify the best possible approach to measuring air quality in your city.
It is very useful to know whether you have an official monitoring station or other measuring devices in your city and which pollutants and use cases you are most interested in.

In case you could not find an answer to your questions, please use our contact form to send us a message.