real-time information system that provides the public with an indication of air quality in rural and urban areas across Ontario.
The Air Quality index, based on annual reports from the EPA. 1 to 100, where higher values are better. The number of ozone alert days is used as an indicator of air quality, as are the amounts of seven pollutants including particulates, carbon monoxide, sulfur dioxide, lead, and volatile organic chemicals.
The measurement of air quality that is calculated from ozone and fine particle pollution measurements over the past few hours. A higher AQI indicates a higher level of air pollution, and consequently, a greater potential for health problems.
a scale that indicates the quality of air, based on air pollutant monitoring data
A report of daily outdoor air quality conditions. In Minnesota and Utah, four pollutants are used to calculate the AQI: ground-level ozone, sulfur dioxide, carbon monoxide and fine particles PM2.5 .
The AQI is a scale of 0 to 500, developed by the U.S. Environmental Protection Agency and divided into several color-coded categories. The AQI scale serves as a simple tool for reporting the air quality of a particular region. A value of 101 or greater means that concentrations that violate national health-based standards for the pollutant in question (ground-level ozone or particle pollution) are either present or forecasted to be present.
an index for reporting how clean or dirty the local air is and what health effects people should be concerned with. The AQI focuses on health effects that occur within a few hours or days after exposure to polluted air. The AQI is used for five major air pollutants regulated by the Clean Air Act. These are ground-level ozone, particulate matter, carbon monoxide, sulfur dioxide, and nitrogen oxides. For each of these pollutants, EPA has established national air quality standards to protect against harmful health effects.
A scale developed by the government to measure how much air pollution is in the air. The AQI measures five criteria pollutants -- ozone, particulate matter, carbon monoxide, sulfur dioxide, and nitrogen dioxide. AQI levels range from 0 (Good air quality) to 500 (Hazardous air quality). The higher the index, the higher the level of pollutants and the greater the likelihood of health effects. The AQI also has another category -- unhealthy for sensitive groups -- that ranges from 101 to 150. The AQI is usually used in weather reports. When it is high, there are warnings for people not to do things like sports or hard work outside. People with asthma or other lung problems are urged to stay inside on days that the AQI is high.
a way of describing our outdoor air quality. Each hour, Alberta Environment calculates the Air Quality Index in a number of locations by converting the local concentrations of carbon monoxide, fine particulate matter, nitrogen dioxide, ground-level ozone and sulphur dioxide to an Air Quality Index number:- a rating of 0 to 25 indicates good air quality. This is the best possible rating and means there are no known harmful effects to human or environmental health.- a rating of 26-50 is fair air quality, which means there is adequate protection against harmful effects.- a rating of 51-100 indicates poor air quality and not all aspects of the environment are adequately protected from possible adverse effects.- a rating of more than 100 is very poor air quality, which means continued high readings could pose a risk to human health.
A guide that provides information about air quality and the health effects that might be a concern for the public.
Provides information on the adverse effects of the more common air pollutants. It is designed to identify the worst effects that may result from the mixture of pollutants currently being measured and to describe the prevailing air quality.
The Air Quality Index (AQI) is a standardized indicator of the air quality in a given location. It measures mainly ground-level ozone and particulates (except the pollen count), but may also include sulphur dioxide, and nitrogen dioxide. Various agencies around the world measure such indices, though definitions may change between places.