Daily AQI Color | Levels of Concern | Values of Index |
Yellow | Moderate | 51 to 100 |
Orange | Unhealthy for Sensitive Groups | 101 to 150 |
Red | Unhealthy | 151 to 200 |
Purple | Very Unhealthy | 201 to 300 |
People also ask
What is very unhealthy air quality?
What is the best range for air quality index?
Why is the air quality bad in Ohio?
What does 170 air quality mean?
Get air quality data where you live. ; Air Quality Index Scale ; 0 - 50. Good ; 51 - 100. Moderate ; 101 - 150. Unhealthy for Sensitive Groups (USG) ; 151 - 200.
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 ...
6 days ago · Keep track of the most polluted cities in the world with our air quality index (AQI) ranking.
Air Now Logo. Interactive Map of ... U.S. Air Quality Index. Good (0-50). Moderate (51 ... Click “Plot Data” to see an AQI bar chart and a concentration line graph.