Air Quality Index (AQI) | AirNow.gov
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.
Air Quality Index (AQI) Basics - AirNow
The U.S. Air Quality Index (AQI) is EPA's tool for communicating about outdoor air quality and health. The AQI includes six color-coded categories, each corresponding to a range of index values. The higher the AQI value, the greater the level of …
About Air Quality | Air Quality | CDC - Centers for Disease …
2024年5月14日 · Pay attention to the Air Quality Index (AQI). The AQI tells you when high levels of air pollution are predicted and how air pollution affects your health. Finding the AQI is easy. It's on the Web, on many local TV weather forecasts, or you can sign up for free e-mail tools or download the AirNow app. The AQI is easy to use.
Air Quality and Health - Johns Hopkins Medicine
You can get information about air quality from local weather reports and the U.S. Air Quality Index. Air quality refers to the concentration of pollutants in the air. The air quality index (AQI ) changes daily and may be part of a regional or local weather forecast.
Patient Exposure and the Air Quality Index | US EPA
2024年10月4日 · What is the Air Quality Index (AQI)? Where can I find daily air quality reports? What can I advise my patients to do when air quality is unhealthy? How can my patients reduce particle pollution exposure near roadways? How effective are air quality notifications in reducing potentially adverse exposures? What education materials are available?
Patient Exposure and the Air Quality Index | US EPA
2024年11月19日 · The Air Quality Index, or AQI, is a nationally uniform index for reporting and forecasting daily air quality. It is used to report the five most common ambient air pollutants that are regulated under the Clean Air Act: ground-level ozone, particle pollution (or particulate matter), carbon monoxide, sulfur dioxide, and nitrogen dioxide.
Air Quality | US EPA - U.S. Environmental Protection Agency
2024年11月26日 · The U.S. Air Quality Index is EPA's index for reporting air quality. Every day the AQI tells you how clean or polluted your outdoor air is, along with associated health effects that may be of concern.
Air Quality Index - American Lung Association
2024年9月18日 · The Air Quality Index, or AQI, is the system used to warn the public when air pollution is dangerous. 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.
Figure 14: Air Quality Index (AQI) levels of health concern. - US …
EPA's risk assessment (Whitfield et al., 1996) indicates that at this level for healthy individuals (adults and children) at moderate exertion: 1) approximately 18% are estimated to experience moderate or greater lung function impairment, 2) approximately 9% are estimated to experience large or greater lung function impairments, and 3) approxima...
Understanding air quality and the air quality index
Air quality refers to the level of pollutants in the air. Good air quality means the air is relatively clean and there are few or no pollutants present that day. Bad (or poor) air quality means the air contains one or several pollutants in amounts that are hazardous to our lungs and overall health.
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