How does topography affect air pollution dispersion?

Aug 21, 2023 ... These graphs use the Air Quality Index (AQI), which is the standard tool of the Environmental Protection Agency (EPA) to communicate air quality ... 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 ... The table below shows when and how to modify outdoor physical activity based on the Air Quality Index. This guidance can help protect the health of all children ... Daily Air Quality Index. The Daily Air Quality Index (DAQI) tells you about levels of air pollution and provides recommended actions and health advice. The ... Apr 24, 2025 ... How do the numbers work? The index's scale runs from 0 to 500; the higher the number, the worse the air. If the index is registering less than ... The air quality forecast page displays the predicted maximum AQI value for eight Air Quality Health Advisory regions in the State. This standardized system to provide the public with timely and easy-to-understand information on local air quality and whether air pollution levels pose a ... Sep 27, 2023 ... How do I read the AQI? The scale is split into six categories, each with a color and a number corresponding to the amount of pollution in the ... View All Events. X (formerly Twitter). Tweets by SouthCoastAQMD. Air Quality Index (AQI) Map. Chrome; Firefox; Safari; Edge. Air Quality Maps. Current Air ... The Air Quality Index is based on measurement of particulate matter (PM2.5 and PM10), Ozone (O3), Nitrogen Dioxide (NO2), Sulfur Dioxide (SO2) and Carbon ...