Global Air Quality Update - Week of October 26, 2026

Live data snapshot for October 26, 2026. 217 cities tracked. Global average AQI: 78.

This week's most polluted city is Lahore, Pakistan at AQI 198. The cleanest air right now is in Christchurch, New Zealand at AQI 12.

Biggest changes this week

Top 10 most polluted cities right now

1. Lahore, Pakistan - AQI 198 (PM2.5 92.4 μg/m³)
2. Kabul, Afghanistan - AQI 188 (PM2.5 88.2 μg/m³)
3. Dhaka, Bangladesh - AQI 182 (PM2.5 84.3 μg/m³)
4. Faisalabad, Pakistan - AQI 172 (PM2.5 76.2 μg/m³)
5. Delhi, India - AQI 168 (PM2.5 72.4 μg/m³)
6. Cairo, Egypt - AQI 162 (PM2.5 68.2 μg/m³)
7. Kanpur, India - AQI 162 (PM2.5 68.4 μg/m³)
8. Kathmandu, Nepal - AQI 158 (PM2.5 66.4 μg/m³)
9. Karachi, Pakistan - AQI 154 (PM2.5 62.1 μg/m³)
10. Tehran, Iran - AQI 148 (PM2.5 56.3 μg/m³)

Top 10 cleanest cities right now

1. Christchurch, New Zealand - AQI 12 (PM2.5 3.4 μg/m³)
2. Wellington, New Zealand - AQI 14 (PM2.5 3.2 μg/m³)
3. Auckland, New Zealand - AQI 18 (PM2.5 4.1 μg/m³)
4. Helsinki, Finland - AQI 20 (PM2.5 4.4 μg/m³)
5. Adelaide, Australia - AQI 20 (PM2.5 4.4 μg/m³)
6. Oslo, Norway - AQI 22 (PM2.5 4.2 μg/m³)
7. Perth, Australia - AQI 22 (PM2.5 4.2 μg/m³)
8. Stockholm, Sweden - AQI 24 (PM2.5 5.4 μg/m³)
9. Calgary, Canada - AQI 24 (PM2.5 5.4 μg/m³)
10. Brisbane, Australia - AQI 24 (PM2.5 5.4 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.

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