155 air quality index

Last update atJan Free iOS and Android air quality app. Reduce your air pollution exposure in Bulgaria.

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.

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:.

The higher the number, the more people are at risk of health harm. If multiple pollutants are measured, the calculated AQI is the highest value calculated from the above equation applied for each pollutant. Inline Feedbacks.

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 sources , as well as four other widespread air pollutants. Newspapers, radio, television, and websites report AQI levels year-round. 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. Air pollution can harm anyone, but it can be especially dangerous for many people, including children and teens, people with asthma and other lung diseases, anyone over 65, people who have diabetes or cardiovascular disease or who are pregnant. Even healthy adults who exercise or work outdoors can be harmed.

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. Like the weather, it can change from day to day. EPA developed the Air Quality Index, or AQI, to make information available about the health effects of the five most common air pollutants, and how to avoid those effects.

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.

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Although air quality has improved in recent decades, it still remains inferior by European and global standards. We are waiting for you guys, you are late hurry up! Check your local radio, TV weather reports, newspaper or the weather app on your phone. Unhealthy to Children, active adults, and people with respiratory disease, such as asthma, should avoid outdoor exertion; everyone else should limit prolonged outdoor exertion. Strange that this does not mention the shift towards electrically-propelled vehicles EVs in many countries. You will now receive email updates from the American Lung Association. Refuel the car after dark so polluting emissions cannot react with sunlight and heat to create ground level ozone. State and local agencies must report the Air Quality Index daily in U. Archived from the original on 21 August PM Are you at risk?

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 air in Bulgaria is among the most polluted in Europe. Judah martin. Taken together, concentration and time represent the dose of the air pollutant. The main aim of the CAQI was to have an index that would encourage wide comparison across the EU, without replacing local indices. Like it was mentioned in the report , EPA is working with states and tribes to limit common air pollutants and helping states to meet standards for them with the help of issuing federal and national emissions standards. Suppose a monitor records a hour average fine particle PM 2. To accurately reflect the current air quality, the multi-hour average used for the AQI computation should be centered on the current time, but as concentrations of future hours are unknown and are difficult to estimate accurately, EPA uses surrogate concentrations to estimate these multi-hour averages. At the low and moderate levels the public are advised that they can continue normal activities. May cause respiratory illness to the people on prolonged exposure. 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. Other factors affecting air quality Since air currents determine how pollution is dispersed, weather is also a factor in air quality and air pollution. Red Unhealthy to Some members of the general public may experience health effects; members of sensitive groups may experience more serious health effects.