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The 24 hour AQI is a prediction of what the 24 hour AQI average will be for the current day.
The prediction is based on a weighted average of the last 12 hours of data, with the most recent hours being weighted more heavily.
Air Quality Index (AQI) Values |
Levels of Health Concern | Colors |
When the AQI is in this range: | ..air quality conditions are: | ...as symbolized by this color: |
---|---|---|
0-50 | Good | Green |
51-100 | Moderate | Yellow |
101-150 | Unhealthy for Sensitive Groups | Orange |
151 to 200 | Unhealthy | Red |
201 to 300 | Very Unhealthy | Purple |
301 to 500 | Hazardous | Maroon |