What is the Air Quality Index? What is Bangalore’s AQI?
An air quality index (AQI) is used by government agencies to communicate to the public how polluted the air currently is or how polluted it is forecast to become. Public health risks increase as the AQI rises. Computation of the AQI requires an air pollutant concentration over a specified averaging period, obtained from an air monitor or model. Taken together, concentration and time represent the dose of the air pollutant.
The AQI is divided in six categories and each category is meant to correspond to different health concern levels. Below is an explanation of the categories and their meanings.
- 0 – 50 indicates “Good” AQI. At this level, the quality of air is deemed to be satisfactory, and air pollution poses little or no risk.
- 51 – 100 indicate “Moderate” AQI. This means acceptable Air quality. However, some pollutants might arouse modest health concern for a limited number of people. For instance, persons who are remarkably sensitive to ozone may experience respiratory symptoms.
- 101 – 150 indicate “Unhealthy for Sensitive Groups” AQI. This category may not be able to affect the general health of the public. However, children, older adults, and persons with lung disease are at greater risk from ozone exposure. Older children, adults, and people with lung and heart disease are at greater risk from exposure to particulate matter.
- 151 – 200 indicate “Unhealthy” AQI. In this category, every person might experience some adverse health effects. Sensitive group members may experience more serious effects. People with heart or lung disease, older adults and children should cut back or reschedule strenuous activities.
- 201 – 300 indicate “Very Unhealthy” AQI. This would issue a health alert to mean that everybody may experience very serious health implications. People with heart or lung disease, older adults and children should significantly cut back or reschedule strenuous activities.
- Greater than 300 indicate “Hazardous” AQI. Air quality at this level is life-threatening and would issue warnings of emergency conditions for the entire population.
At a glance, the table below provides the Air Quality Index (AQI) categories
| 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 |
Bangalore AQI
Latest Air Quality Index states AQI in Bangalore is 129, which is very unhealthy
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