Days before Diwali, the air quality in the national capital improved slightly but remained in the 'poor' category on Tuesday. Delhi's air quality index (AQI) was at 272, an improvement from that AQI of 304 recorded a day ago, according to Central Pollution Control Board data.

Out of a total of 40 monitoring stations across the city, data from 37 has been shared by the department. Among these, 10 stations -- Anand Vihar, Alipur, Aya Nagar, Bawana, Jahangirpuri, Mundka, Narela, Wazirpur, Vivek Vihar, and Sonia Vihar -- were in the "very poor" category, while the remaining in the "poor" category.

An AQI between zero and 50 is considered 'good', 51 and 100 'satisfactory', 101 and 200 'moderate', 201 and 300 'poor', 301 and 400 'very poor', and 401 and 500 'severe'.

The national capital witnesses increasing pollution levels, particularly as winter approaches and the annual smog season sets in. The city gets blanketed in a layer of smog during the evening and early morning hours.

Meanwhile, according to the weather department, the wind speed was calm at 8:30 am. The minimum temperature was recorded at 20.3 degrees Celsius, four notch above the season's average while the relative humidity was 85 per cent. The weather department has forecast clear skies throughout the day, with the maximum temperature expected to reach around 33 degrees Celsius.

Check out the table below for the AQI in your locality. 

StationAQI
Dwarka-Sector 8266
Delhi Airport 254
Jahangirpuri300
Lodhi Road228
Major Dhyan Chand Stadium302
Mandir Marg283
Mundka326
NSIT, Dwarka208
Najafgarh274
Nehru Nagar292
North Campus, DU253
Okhla Phase-2263
Punjabi Bagh285
Pusa244
RK Puram296
Rohini288
Shadipur252
Sirifort275
Sonia Vihar306
Sri Aurobindo Marg306
Vivek Vihar314
Wazirpur308
Alipur 310
Anand Vihar312
Ashok Vihar270
Bawana 324
Burari Crossing324
Karni Singh Shooting Range281

*Figures published by the Air Quality Early Warning and Decision Support System For Delhi at 8:30 AM.