What does a "Good" Air Quality Index mean?

Air Quality Index for Health. The Environmental Protection Agency's Air Quality Index for Health (AQIH) is a number from 1 to 10 that tells you what the air ... Jun 28, 2023 ... The Air Quality Index, set by the Environmental Protection Agency, is your guide to how bad the air quality is outdoors. 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 ... We recommend developing a universal AQI (UAQI) with a consistent relationship between colors, concentrations, and toxicity to communicate air pollution risks ... Apr 17, 2025 ... Check out this link regarding the current air quality conditions in Rapid City. Click to see the current Air Quality Index. Sep 18, 2024 ... AQI values at or below 100 are considered satisfactory for almost everyone. When AQI values are above 100, air quality is unhealthy. The higher ... Aug 8, 2023 ... The AQI in Lane county is calculated for two major pollutants regulated by the Clean Air Act: ground-level ozone and particulate matter (PM2.5). 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 ... Air Quality Index (AQI), PM 2.5, Ozone. Good, 0 - 9.0 µg/m3, 0 - 0.054 ppm ... Air Quality Index. Media. Forecasts at a Glance · Current Conditions at a Glance ... 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 ...