155 air quality index

Ever hear your local weather forecast say that tomorrow will be a "code orange" day for air pollution? That's the Air Quality Index at work. The AQI tracks ozone smog and particle pollution tiny particles from smoke, power plants and factories, vehicle exhaust, and other sources155 air quality index, as well as four other widespread air pollutants.

Once connected, your real time air pollution levels are instantaneously available in on our maps. The station comes together with meter water-proof power cables, a power supply, mounting equipment and an optional solar panel. North America. South America. Middle East.

155 air quality index

AirNow will reflect the updates when they become effective -- 60 days after the rule is published in the Federal Register. Read about the AQI updates. Think of the AQI as a yardstick that runs from 0 to The higher the AQI value, the greater the level of air pollution and the greater the health concern. For example, an AQI value of 50 or below represents good air quality, while an AQI value over represents hazardous air quality. For each pollutant an AQI value of generally corresponds to an ambient air concentration that equals the level of the short-term national ambient air quality standard for protection of public health. AQI values at or below are generally thought of as satisfactory. When AQI values are above , air quality is unhealthy: at first for certain sensitive groups of people, then for everyone as AQI values get higher. The AQI is divided into six categories. Each category corresponds to a different level of health concern. Each category also has a specific color. The color makes it easy for people to quickly determine whether air quality is reaching unhealthy levels in their communities. Each of these pollutants has a national air quality standard set by EPA to protect public health:. Skip to main content. X No Data Available There are no current and forecast air quality data found near your location.

Yellow Moderate 51 to Air quality is acceptable.

An air quality index AQI is an indicator developed by government agencies [1] to communicate to the public how polluted the air currently is or how polluted it is forecast to become. Children, the elderly and individuals with respiratory or cardiovascular problems are typically the first groups affected by poor air quality. When the AQI is high, governmental bodies generally encourage people to reduce physical activity outdoors, or even avoid going out altogether. When wildfires result in a high AQI, the use of a mask such as an N95 respirator outdoors and an air purifier incorporating both HEPA and activated carbon filters indoors are also encouraged. Different countries have their own air quality indices , corresponding to different national air quality standards.

What does the AQI mean? The scale goes from 0 to It can be dangerous for people with lung conditions like asthma or COPD at lower levels. The daily AQI measures air pollution from ozone, particle matter, carbon monoxide, sulfur dioxide, and nitrogen dioxide. This number tells you if your air quality is good, moderate, unhealthy, or bad. AQI numbers start at 0 and can go up to The higher the number, the worse the air pollution.

155 air quality index

AirNow will reflect the updates when they become effective -- 60 days after the rule is published in the Federal Register. Read about the AQI updates. Think of the AQI as a yardstick that runs from 0 to The higher the AQI value, the greater the level of air pollution and the greater the health concern. For example, an AQI value of 50 or below represents good air quality, while an AQI value over represents hazardous air quality. For each pollutant an AQI value of generally corresponds to an ambient air concentration that equals the level of the short-term national ambient air quality standard for protection of public health.

Nbadraft 2017

Archived from the original on 22 May Among the main sources of pollution in Bulgaria is domestic heating of solid fuels such as coal and wood, combustion of coal for the production of electricity and heat from thermal power stations, road transport, industry, construction and repair activities. The air quality index is a piecewise linear function of the pollutant concentration. In some areas, the quality is worse during the colder first months of the year, but this is due to local topography and therefore cannot be generalised. A level of is deemed safe for each pollutant. Keeping track of the current air quality information in your area can help you take steps to protect yourself, children, and others from unhealthy levels of air pollution. Outdoor activities are never allowed. Repeated long-term exposure can lead to heart disease. Become a Lung Health Insider Join over , people who receive the latest news about lung health, including research, lung disease, air quality, quitting tobacco, inspiring stories and more! Show Announcements Popup 2. The index is defined in both hourly and daily versions, and separately near roads a "roadside" or "traffic" index or away from roads a "background" index.

AirNow will reflect the updates when they become effective -- 60 days after the rule is published in the Federal Register. Read about the AQI updates.

How are other countries faring? Every year Bulgarian cities rank among the leading places with the most polluted air in Europe. Health alert: The risk of health effects is increased for everyone. Ozone Radium and radon in the environment Volcanic ash Wildfire. Current Pollutants Air Quality Scale. Archived from the original on 21 August Strange that this does not mention the shift towards electrically-propelled vehicles EVs in many countries. US Environmental Protection Agency. When the AQI is high, governmental bodies generally encourage people to reduce physical activity outdoors, or even avoid going out altogether. X No Data Available There are no current and forecast air quality data found near your location.