FAQ
Air Pollution, API, Apps & more

Why is air quality so important?
Air pollution causes 1 in 8 deaths worldwide: It is the single biggest environmental health crisis we face! The number of annual deaths caused by air pollution around the world is now greater than malaria, car accidents and HIV combined. More than 80% of people living in urban areas are exposed to air quality levels that exceed the World Health Organization (WHO) limits. limits.
What makes BreezoMeter unique?
In our hyperconnected world, relevant, impactful and accurate information makes the difference between engaging with your users at a personal level and leaving them unmoved. BreezoMeter’s accurate data leads to the best-in-class user experience, successful marketing campaigns, improved brand image and more. That's what BreezoMeter is about: real-time, location-based and personalized air quality data with actionable recommendations. In order to provide you with this unique competitive advantage, we've developed the most advanced air quality technology in the market: we combine information from thousands of official sensors, satellites data, local weather, traffic congestion and more, into powerful algorithms based on academic research, big data, and machine learning. Moreover, we're the only air quality monitoring company to provide 24/7 support, global coverage and scalable solutions for any business and any requirements.
What does the air quality index (AQI) mean?
An air quality index (AQI) is a number used to communicate how polluted the air currently is or how polluted it is forecasted to become. Today, there is no standardized approach to providing air quality information globally, meaning AQIs are usually different from country to country. BreezoMeter has created a new uniform index: the BreezoMeter Air Quality Index (BAQI). The BAQI values range between 100 (Excellent air quality) and 0 (Poor air quality), and are determined based on concentrations of predefined air pollutants depending on local standards (read more). In addition to the BAQI, the Local AQI is always available as well.
What is the Local AQI, and how do I access it?
The Local AQI is the air quality index of the location that was searched. Local AQIs use many different scales, and can range from 0-10, -100 to 400, and so forth. For some AQIs, the higher number represent better air quality, and for some it signifies worse. It can be very confusing to understand and compare the air quality of places that use different AQIs, hence BreezoMeter’s establishment of the BAQI, which is uniform, global, and based on the health impacts of key pollutants. In the event that the location of interest doesn’t have an official national AQI calculation, an alternate AQI will be given, such as that of the US (US-EPA) or Europe (European AQI), in addition to the BAQI. In the iOS and Android apps, you can access the local AQI by tapping the 3 dots at the top right corner of the screen and choose “Local info.”
How do you define air pollution?
Air pollution is the introduction of particulates, biological molecules, or other harmful materials into Earth's atmosphere, causing disease, death to humans, damage to other living organisms such as food crops, or the natural or built environment. Air pollution may come from anthropogenic or natural sources (Wikipedia, 2016). According to the EPA, The Clean Air Act requires the EPA to set national ambient air quality standards (NAAQS) for specific pollutants to safeguard human health and the environment. These standards define the minimum levels of air quality that the EPA determines are necessary to protect against the adverse impacts of air pollution, based on scientific evidence. The EPA has established standards for six common air pollutants, which are referred to as “criteria” pollutants.  
  1. Carbon monoxide (CO)
  2. Lead (Pb)
  3. Nitrogen dioxide (NO2)
  4. Ozone (O3)
  5. Particulate matter (PM2.5/PM10), and
  6. Sulfur dioxide (SO2)
What types of pollutants are being monitored worldwide?
Six main air pollutants are monitored in most countries: ozone (O3), fine particulate matter (PM2.5), particulate matter (PM10), nitrogen dioxide (NO2), sulfur dioxide (SO2), and carbon monoxide (CO). Although there are hundreds of harmful pollutants out there, these six pollutants have been selected for several reasons, including: their significant presence in the ambient environment, the ability to measure them effectively and accurately, and their proven impact on human health, at least in the short-term.
What can individuals do with air quality data?
Once citizens are aware and informed of the air quality they are breathing, they can limit their exposure to air pollution. A recent research study showed that BreezoMeter’s app users positively changed their behavior to minimize hazardous exposure to polluted air.
What are the health effects of Sulfur Dioxide (SO2)?
Short-term exposure to SO2 is linked with respiratory effects, including difficulty breathing and increased asthma symptoms. These effects are particularly problematic for asthmatics while breathing deeply such as when exercising or playing. Short-term exposure to SO2 has also been connected to increased emergency department visits and hospital admissions for respiratory illnesses, particularly for at-risk populations including children, older adults and those with asthma. Contributes to particle formation with associated health effects. (EPA, 2016).
What are the health effects of Nitrogen Dioxide (NO2)
Short-term exposures to NO2 can aggravate respiratory diseases, particularly asthma, leading to respiratory symptoms, hospital admissions and emergency department visits. Long-term exposures to NO2 may contribute to asthma development and potentially increase susceptibility to respiratory infections (EPA, 2016).
What are the health effects of Carbon Monoxide (CO)?
Breathing elevated levels of CO reduces the amount of oxygen that reaches the body’s organs and tissues. For those with heart disease, this can result in chest pain and other symptoms leading to hospital admissions and emergency department visits (EPA, 2016).
What are the health effects of Particular Matter (PM)?
Exposure to PM, particularly fine particles referred to as PM2.5, can cause harmful effects on the cardiovascular system including heart attacks and strokes. These effects can result in emergency department visits, hospitalizations and, in some cases, premature death. PM exposures are also linked to harmful respiratory effects, including asthma attacks. (EPA, 2016).
What are the health effects of Ozone?
Ozone exposure reduces lung function and causes respiratory symptoms, such as coughing and shortness of breath. Ozone exposure also aggravates asthma and lung diseases such as emphysema leading to increased medication use, hospital admissions, and emergency department visits. Exposure to ozone may also increase the risk of premature mortality from respiratory causes. Short-term exposure to ozone is also associated with increased total non-accidental mortality, which includes deaths from respiratory causes (EPA, 2016).
What are the main differences and similarities between air quality and weather?
Air quality can dramatically change within a very short amount of time, or within a few kilometers, much more so than weather. This is due to a number of different factors. The main variable responsible for changes in air quality levels is human behavior: from power plants to traffic, many anthropogenic activities impact air quality. Air quality also evolves through time and space due to atmospheric conditions. Similarities with weather include the need for relevant, accurate information so that users can modify their behavior based on reports and forecast. BreezoMeter is committed to provide the most accurate and impactful air quality information in the world.
I understand how to query your API. Now what?
Now it's time for the fun part: designing how your users will see air quality data. BreezoMeter air quality data offers endless integration possibilities. We can help you understand how people consume air quality data. Get in touch with us to learn more.
How accurate is BreezoMeter? How do you measure and ensure accuracy?
BreezoMeter uses innovative air quality dispersion models and strict accuracy analysis and validation methods to guarantee extreme precision. If a data source doesn’t meet our accuracy standards, we won’t use its data as input for our algorithms. BreezoMeter’s accuracy validation is performed regularly using different sample areas. For instance, we use the “leave-one-out” cross-validation method. In this validation process, we compare the measurements taken by one of our sources ("real"), with our algorithm calculations for the same exact location, leaving the real source out ("calculated"). We then validate our accuracy through statistical analysis tests. Check this video to understand our technology in 2 minutes, or download the paper by Scientia on our technology.
How does BreezoMeter know the outdoor air quality levels?
Using advanced algorithms and big data infrastructure, BreezoMeter brings air quality data out of obscurity and into the hands of users in a format as simple to access and understand as weather reports. BreezoMeter’s big data analytics determine the dispersion of air pollution from a combination of layered data sets derived from governmental sensors, satellites, weather patterns, transportation dynamics, air dispersion models, and other environmental sources. Tied together with proprietary algorithms, this combination provides users with accurate air quality data, with a precision and granularity down to a city block.
How can I use air quality data in my business?
BreezoMeter air quality and pollen data offer endless integration possibilities. The main benefits our clients see are: better user engagement and user experience, higher retention rate, increased post-sales purchases, increased customer loyalty, impactful and innovative marketing campaigns, and much more.
How do I connect to your data?
It has never been easier to integrate air quality data into your technology and products. BreezoMeter's air quality and pollen data is accessed using an easy and straight-forward API integration. Our dedicated support team is available to help at every step of the integration process. Most clients go live in a day or less, depending on the scope of the project.
It seems like you’re not covering a country I need
Because BreezoMeter offers the best global air quality monitoring coverage in the market, we keep adding new countries based on demand. Schedule a call to learn more about future country rollouts.
Is your system scalable? Can you handle a million API calls a minute?
Yes it is! Built on the cloud using Google Cloud Platform, our system is highly scalable and can match any call volume.
How can I estimate the cost of your services? Can I get a quote?
BreezoMeter offers different packages to fit your unique project, based on which air quality business features you are interested in implementing, the number of API calls you require, the level of support you need, etc. Schedule a call with an air quality specialist today to get an estimate for your project.
What information should I send with the call?
In order to get accurate air quality data, a basic call must contain a location per address or longitude/latitude and your key. For example, by longitude/latitude: http://api-beta.breezometer.com/baqi/?lat=40.7324296&lon=-73.9977264&key=YOUR_API_KEY or per address: https://api.breezometer.com/baqi/?location=1275+mission+st,+san+francisco,+ca+94103,+usa&key=YOUR_API_KEY Questions? Learn more
How can I edit my saved locations? (iOS app)
Open the menu (top left hand corner of the screen). Tap the pencil on the upper right hand side will make red dots appear next to each saved location. Tapping the red dot will remove the location from the list. Tapping the pencil again will exit the editing mode. Tapping the ‘+’ sign lets you add a new location.
How can I edit my saved locations? (Android app)
Open the menu (top left hand corner of the screen). Next to the “My Locations” headline you will see a pencil – tapping it changes the bell icons next to each saved location into a trashcan. Tapping a trashcan will remove the location from the list. Tapping the pencil again will exit the editing mode.
Why does the app show an irrelevant /wrong place as my current location?
The BreezoMeter app uses the smartphone's location services to find your current location. The app uses a predefined default location (e.g., New York) in case the location services of your phone have been disabled since installing the app. When you use the BreezoMeter app please make sure that:
  • You have a good network signal
  • The internet connection is on
  • Location services are on and preferably the GPS is on as well
If the problem continues even with the GPS on please contact us and we will do our best to help resolve it.
Can I get historical data? How far back?
Yes you can. Historical API requests are just as easy to use as our real-time air quality data. For a specific location, you can retrieve air quality data for a precise date/time, or air quality data for a range of dates. In most areas we offer several months to several years of air quality data. Schedule a call with us to learn more, or review the historical data API documentation.
How do I turn off the notifications? (Android app)
Open the menu (top left-hand corner of the screen); Next to each of your locations a bell icon appears (your current location is at the top of the list); Simply tap on each bell to turn off the alarm (for every location).
How can I zoom out on the map? (Android app)
We are currently working on improving the ‘zoom out’ feature. Please go to our Facebook page to stay informed of app updates and new releases.
For what countries do you provide data?
BreezoMeter offers - based on demand - unique global air quality coverage, with new countries added regularly. Currently, our trial API supports more than 67 countries. Schedule a call with us to learn more.
What do you define as an API call?
A call is a request sent to our server with the end user’s location coordinates (latitude/longitude), additional relevant parameters (such as history or forecast date range) and the unique API key registered to the account. A call may hold a range of hours which will be counted as discrete objects in the response. A heatmap call will hold an x/y map location, zoom level and the API key and may generate several image tiles in the response.
What information does an API call return?
A call can yield several layers of information: from real-time air quality data, pollutant descriptions, pollutant concentrations, heat maps, historical data and more. Read more in our documentation page or schedule a demo with us.
I need to make 10 million API calls a day, and it’s expensive. Are there any other options?
Yes! For customers who make more than 3 million calls per day, we will tailor a solution to fit their needs. Contact us to explore opportunities.
Are there any design guidelines for using BreezoMeter’s air quality data?

BreezoMeter’s air quality data offers endless integration possibilities. Schedule a call with a specialist to learn more about how people like to consume air quality data.

Videos

Air quality data will be everywhere. Discover how it is shaping our world and technology.

Play video: BreezoMeter unique air quality technology explained.

Watch the demo: BreezoMeter’s new interactive air quality map!


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