Amidst increased pollution in Delhi, discussion regarding air pollution has started in the country. It is not that only Delhi's air is polluted. Uttar Pradesh's Lucknow, Kanpur and many other states are facing the same problem of air pollution.
The current air quality in the northern states is worse and is harmful for everyone's health. Even more for those who already have any kind of respiratory problems.
In such situation you can check the level of pollution in the air in your vicinity and neighboring areas. For this refer to the table given below
| Air Quality Index (AQI) | Levels of Health Concern | Colors |
| 0-50 | Good | Green |
| 51-100 | Moderate | Yellow |
| 101-150 | Unhealthy for Sensitive Groups | Orange |
| 151-200 | Unhealthy | Red |
| 201-300 | Very Unhealthy | Purple |
| 301-500 | Hazardous | Maroon |
Smartphone users can check the level of pollution in the area around them using their phones. Many types of apps are available where you can check the air quality index (AQI). Among them, breezometer, AirVisual, Central Pollution Control Board's Sameer app are the popular ones.