What factors contribute to local variations in air quality?

Apr 17, 2025 ... Check out this link regarding the current air quality conditions in Rapid City. Click to see the current Air Quality Index. Air quality index. Green is good, yellow moderate, orange unhealthy for sensitive groups and red. Check the Air Quality Index (AQI) By expanding research beyond singular routes of exposure and pollutants, the EQI helps provide a clearer picture of the relationship between the environment and ... The US Environmental Protection Agency (EPA) has provided a scale called the Air Quality Index (AQI) for rating air quality. 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 ... This map shows fine particle pollution from wildfires and other sources. It does not show air toxics or other pollutants. For ozone, go to AirNow. 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 ... Forecast Discussion. Sunny with light winds and a high near 75. Air quality is expected to be within the "Good" category. ... If non-burning options are available ... The Air Quality Index (AQI) for pollutants including ozone and particulate matter (PM) · Current pollutant concentrations (including carbon monoxide. Moderate — 51 to 100. Air quality is acceptable. However, there may be a risk for some people, particularly those who are unusually sensitive to air pollution.