1. **New Delhi, India**
- AQI: 519
- Pollution Source: Vehicle emission, industrial emission, stubble burning, Diwali crackers.
2. **Lahore, Pakistan**
- AQI: 283
- Pollution Source: Industrial emission, vehicle pollution, construction activities.
3. **Kolkata, India**
- AQI: 185
- Pollution Source: Vehicle emission, industrial activities, construction dust.
4. **Mumbai, India**
- AQI: 173
- Pollution Source: Vehicle emission, industrial emission, construction dust.
5. **Kuwait City, Kuwait**
- AQI: 165
- Pollution Source: Oil refinery, vehicle pollution, construction activities.
6. **Dhaka, Bangladesh**
- AQI: 163
- Pollution Source: Brick kilns, vehicle emission, industrial pollution.
7. **Beijing, China**
- AQI: 162
- Pollution Source: Coal power plants, vehicle emission, industrial activities.
8. **Shanghai, China**
- AQI: 161
- Pollution Source: Industrial emission, vehicle pollution, construction dust.
9. **Kathmandu, Nepal**
- AQI: 160
- Pollution Source: Vehicle emission, construction activities, brick kilns.
10. **Tehran, Iran**
- AQI: 159
- Pollution Source: Vehicle emission, industrial pollution, construction dust.
Yeh cities duniya ke sabse polluted areas hain, jahan pollution ki wajah se logon ki health par serious impact hota hai. AQI values weather aur time ke hisaab se badal sakti hain.