What are the limitations of using masks for air pollution protection?

Feb 10, 2025 ... AQI values below 100 are generally thought of as satisfactory. AQI values near or just above 100 indicate air quality is considered to be ... If you would like to send us a message, please try to use one of the following dedicated contact channels. Advisories: Log In. Latest news. No News. Read more. General Index. Stations. Alphabetic Index. ;. Apr 17, 2025 ... Check out this link regarding the current air quality conditions in Rapid City. Click to see the current Air Quality Index. What air pollution is reported by the AQI? AQI pollutants include fine particles, ground-level ozone, carbon monoxide, sulfur dioxide and nitrogen dioxide. Fine ... The daily air quality forecast covers two common air pollutants: Ground-level ozone forms when pollutants from cars, power plants and other sources combine ... The Air Quality Index (AQI) for pollutants including ozone and particulate matter (PM) · Current pollutant concentrations (including carbon monoxide. May 14, 2024 ... 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 Air Quality Index (AQI) is a national index for reporting forecasted and daily air quality. It explains how clean or polluted the air is, and highlights ... 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 ...