Urban air quality
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Starter Guide: Air Quality Sensors and Management for Smart Cities

This article is an introduction into the topics of air quality sensors and air quality management for smart cities and is intended to be smart city managers' first point of contact with this topic. In the following, we will provide a basic overview…
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2024 update to Breeze Technologies’ air quality index

At Breeze Technologies, we regularly evaluate our air quality index (AQI) based on recent scientific insights and publications from international institutions such as the World Health Organization (WHO). Our AQI is mainly developed from the…
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Engaging your community on air quality

Air pollution affects everyone, and while in many countries it remains an invisible threat, public awareness about the issue has continued to rise throughout the last decade. Hence many of our urban air quality monitoring projects with cities…
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Different types of urban air quality monitoring locations

The 2008/50/EC Directive’s sampling point requirement introduces and examines the main question of when air pollutants should be measured. The Directive further examines different types of urban air quality monitoring locations: where should…
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Do plants improve air quality?

According to an often-quoted study conducted by NASA, house plants have been found to purify the air and remove “up to 87% of the amount of toxins in the air”. Recent studies, however, have cast doubt on these statements finding that indoor…
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The connection between the different air pollutants

When it comes to the subject of air pollution, not many people realize that the different air pollutants are very much interconnected. Reactions between various compounds under the right circumstances will form different pollutants, thus exacerbating…
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How air pollution causes acid rain

Acid rain, or acid deposition, is a broad term that includes any form of precipitation with acidic components that fall to the ground from the atmosphere in wet or dry forms. How can rain be acidic, and what are the effects of acid rain? What…
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How to measure pollen

Pollen exposure is one cause of asthma attacks for people prone to them. Breathing in pollen can also cause certain other respiratory symptoms such as sneezing, congestion, and a runny nose. Climate changing is constantly shifting pollen levels,…
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Everything to know about nitrogen dioxide (NO2)

Nitrogen dioxide (NO2) is a chemical compound part of a group of highly reactive gases known as oxides of nitrogen or nitrogen oxides (NOx). It is a common air pollutant recognized by many standard air quality guidelines, including the World…
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Everything to know about Nitrogen Monoxide (NO)

Nitrogen monoxide belongs to a family (nitrogen oxides) of poisonous, highly reactive gases that form when fuel is burned at high temperatures. Nitrogen monoxide pollution is emitted by automobiles, various non-road vehicles such as boats and…
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European Regulation and Limits on Air Pollution

When exposed to air pollutants in ambient air, or the air that we breathe, this can have an adverse effect on our health. The European Union (EU) policy on air quality aims to develop and implement appropriate instruments to improve air quality.…
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What the color of your smog tells you about local air pollutants

Smog makes our air unclear and gives a reddish-brown haze of color over our cities. This is why smog can be used as an indicator of poor air quality. Smog can also tell you the severity of air pollutants in your area too. Read on to find out…