155 air quality index

Last update atJan Free iOS and Android air quality app. Reduce your air pollution exposure in Bulgaria. Bulgaria is officially known as the Republic of Bulgaria and is located in Southeast Europe.

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. Computation of the AQI requires an air pollutant concentration over a specified averaging period, obtained from an air monitor or model. Taken together, concentration and time represent the dose of the air pollutant.

155 air quality index

Are you at risk? Do you know what to do? An air quality alert like this informs the public about pollution levels in the air and advises vulnerable groups—such as the elderly, children, and people with lung disease—to take precautions. The U. Monitors record pollution at over locations in the U. A level of is deemed safe for each pollutant. An AQI number under signifies good or acceptable air quality, while a number over is cause for concern and triggers an alert for vulnerable groups. If two or more pollutants exceed , the highest number becomes the value for the day, and agencies must alert all the groups that are vulnerable to those pollutants. Levels over mean very hazardous conditions. State and local agencies must report the Air Quality Index daily in U. But ground level ozone, a major component of smog, can cause coughing, chest tightness or pain, decrease lung function and worsen asthma and other chronic lung diseases. It can harm the lining of the lungs, make lungs more vulnerable to infection, and potentially damage them permanently. Ground level ozone is produced when emissions from vehicles, power plants, industrial boilers and other fossil fuel burning facilities react with sunlight. It often forms in warmer months when there is more sunlight, and peaks during rush hour when many cars are on the road. Each year, ozone causes about premature deaths, more than hospital visits, and 4, emergency room visits in New York City.

No results found. Are you or someone in your family at higher risk from air pollution? Domestic heating is a major source of fine particulate matter PM in the atmosphere.

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. South Korea. Check out the real-time air pollution map, for more than countries.

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. Every day the Air Quality Index AQI tells you how clean or polluted your outdoor air is, along with associated health effects that may be of concern. Local air quality affects how you live and breathe. Like the weather, it can change from day to day or even hour to hour. Ground-level ozone and airborne particles are the two pollutants that pose the greatest threat to human health in this country. Millions of people live in areas where air pollution can cause serious health problems. Local air quality can affect our daily lives.

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.

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Biological hazard Genetic Introduced species Invasive species. EPA and medical experts recommend that people limit their strenuous outdoor activity on air quality alert days. CiteairII stated that having an air quality index that would be easy to present to the general public was a major motivation, leaving aside the more complex question of a health-based index, which would require, for example, effects of combined levels of different pollutants. Likely health impacts for different AQI categories and pollutants have also been suggested, with primary inputs from the medical experts in the group. While people directly affected by air pollution should follow the AQI recommendations, there are also things everyone can do to improve air quality. Anyone experiencing discomfort such as sore eyes, cough or sore throat should consider reducing activity, particularly outdoors. European Environment Agency. Of values of the five air pollutants, the highest is the CAI value. Topics History Pollutants Heavy metals Paint. It produces a lot of smoke when burned and leaves a lot of ash as a residue. Burkina Faso. Maroon Hazardous and higher Health warning of emergency conditions: everyone is more likely to be affected.

Ever hear your local weather forecast say that tomorrow will be a "code orange" day for air pollution?

Combustion of coal for electricity and heat production in thermal power stations are also among the main sources of emissions that degrade air quality. Smaller particles with a size of 2. In China, which is notorious for severe air pollution, PM2. 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. General population should moderately reduce outdoor activities. South Korea. The maps are available at Airnow. During a period of very poor air quality, such as an air pollution episode , when the AQI indicates that acute exposure may cause significant harm to the public health, agencies may invoke emergency plans that allow them to order major emitters such as coal burning industries to curtail emissions until the hazardous conditions abate. These groups should reduce their exertion outdoors. They make their own renewable energy projects and storage systems, including the insulation of homes and buildings. The Polish government, for example, has banned the sale of heating systems that do not meet emission standards. PSI levels above may be life-threatening to ill and elderly persons.