155 air quality index

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

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.

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.

May cause breathing discomfort to people with lung disease such as asthma, and discomfort to people with heart disease, children and older adults. CiteairII stated that the "main goal of the CAQI is not to warn people for possible adverse health effects of poor air quality but to attract their attention to urban air pollution 155 air quality index its main source traffic and help them decrease their exposure.

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.

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.

155 air quality index

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. AQI numbers rarely go above in the United States. These are the numbers and what they mean :. These symptoms can include cough, throat irritation, shortness of breath, chest tightness, wheezing, or chest pain or burning.

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Mild aggravation of symptoms among susceptible persons i. On a day when the AQI is predicted to be elevated due to fine particle pollution, an agency or public health organization might:. Children, seniors and individuals with heart or lung diseases should stay indoors and avoid outdoor activities. Agricultural pollution Herbicides Manure waste Pesticides Land degradation Bioremediation Open defecation Electrical resistance heating Soil guideline values Phytoremediation. Temperature inversion also plays a part because it traps the polluted air at ground level because of the difference in air temperature during the colder months. The initial iteration of the air quality index used standardized ambient pollutant concentrations to yield individual pollutant indices. Set thermostats higher in summer and lower in winter, and use Energy Star appliances. The general public is not likely to be affected. Taj Mahal. It shares borders with five other countries and has a Black Sea coastline. Retrieved 29 July Most air contaminants do not have an associated AQI. Chemical warfare Herbicidal warfare Agent Orange Nuclear holocaust Nuclear fallout - nuclear famine - nuclear winter Scorched earth Unexploded ordnance War and environmental law. Coal-fired power stations are also a source of a third of the world's carbon dioxide CO 2 as a result of human activity.

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

The air quality index is a piecewise linear function of the pollutant concentration. The CAQI is defined as the sub-index that represents the worst quality among those components. Older people should also reduce physical exertion. Any exposure to the air, even for a few minutes, can lead to serious health effects on everybody. General population should avoid outdoor activities. C Fensterstock et al. Biological Biological hazard Genetic Introduced species Invasive species. Your tax-deductible donation funds lung disease and lung cancer research, new treatments, lung health education, and more. 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. No need to modify your usual outdoor activities unless you experience symptoms such as coughing and throat irritation. These groups should reduce their exertion outdoors. The maps are available at Airnow.