Global Air Quality Update - Week of September 14, 2026

Live data snapshot for September 14, 2026. 217 cities tracked. Global average AQI: 67.

This week's most polluted city is Riyadh, Saudi Arabia at AQI 1345. The cleanest air right now is in La Paz, Bolivia at AQI 10.

Biggest changes this week

Worsening

• Riyadh, Saudi Arabia: 971 → 1345 AQI (+374)
• Abu Dhabi, UAE: 128 → 152 AQI (+24)
• Dubai, UAE: 146 → 167 AQI (+21)
• Jakarta, Indonesia: 164 → 170 AQI (+6)
• Chengdu, China: 137 → 142 AQI (+5)

Improving

• Guangzhou, China: 180 → 129 AQI (-51)
• Santiago, Chile: 151 → 117 AQI (-34)
• Kuala Lumpur, Malaysia: 167 → 143 AQI (-24)
• Islamabad, Pakistan: 128 → 117 AQI (-11)
• Quito, Ecuador: 24 → 16 AQI (-8)

Global average shifted from 66 to 67 (+1).

Top 10 most polluted cities right now

1. Riyadh, Saudi Arabia - AQI 1345 (PM2.5 98.3 μg/m³)
2. Jakarta, Indonesia - AQI 170 (PM2.5 33.2 μg/m³)
3. Bandung, Indonesia - AQI 167 (PM2.5 25.1 μg/m³)
4. Dubai, UAE - AQI 167 (PM2.5 50.9 μg/m³)
5. Kuwait City, Kuwait - AQI 155 (PM2.5 58.2 μg/m³)
6. Kinshasa, DR Congo - AQI 154 (PM2.5 37.4 μg/m³)
7. Abu Dhabi, UAE - AQI 152 (PM2.5 24.6 μg/m³)
8. Xian, China - AQI 151 (PM2.5 44 μg/m³)
9. Doha, Qatar - AQI 151 (PM2.5 59.6 μg/m³)
10. Kuala Lumpur, Malaysia - AQI 143 (PM2.5 50.8 μg/m³)

Top 10 cleanest cities right now

1. La Paz, Bolivia - AQI 10 (PM2.5 2.3 μg/m³)
2. Quito, Ecuador - AQI 16 (PM2.5 1.8 μg/m³)
3. Stockholm, Sweden - AQI 19 (PM2.5 2.8 μg/m³)
4. Hiroshima, Japan - AQI 20 (PM2.5 3.6 μg/m³)
5. Helsinki, Finland - AQI 21 (PM2.5 2.2 μg/m³)
6. Sao Paulo, Brazil - AQI 22 (PM2.5 2.8 μg/m³)
7. Cali, Colombia - AQI 22 (PM2.5 5.4 μg/m³)
8. Seattle, United States - AQI 24 (PM2.5 6.7 μg/m³)
9. San Jose, Costa Rica - AQI 24 (PM2.5 4.3 μg/m³)
10. Pune, India - AQI 25 (PM2.5 5.9 μg/m³)

What is AQI?

AQI (Air Quality Index) is a 0-500 scale used by the US EPA. Below 50 is good, above 150 unhealthy, above 300 hazardous. Most damage comes from PM2.5 - fine particles that enter the bloodstream. Learn more: PM2.5 explained.

Get alerts for your city

Free email alerts when any city's AQI crosses your threshold. Set up alerts →

---

Data: live readings refreshed every 30 minutes by atmos.today. See methodology and attribution.