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August 17, 2026

Global Air Quality Update - Week of August 17, 2026

Live data snapshot for August 17, 2026. 217 cities tracked. Global average AQI: 65.

This week's most polluted city is Riyadh, Saudi Arabia at AQI 428. The cleanest air right now is in La Paz, Bolivia at AQI 10.

Biggest changes this week

Worsening

Improving

Global average shifted from 67 to 65 (-2).

Top 10 most polluted cities right now

  1. Riyadh, Saudi Arabia - AQI 428 (PM2.5 57.9 μg/m³)
  2. Kuwait City, Kuwait - AQI 402 (PM2.5 108.7 μg/m³)
  3. Hanoi, Vietnam - AQI 207 (PM2.5 56.5 μg/m³)
  4. Bandung, Indonesia - AQI 178 (PM2.5 53.7 μg/m³)
  5. Jakarta, Indonesia - AQI 174 (PM2.5 65.9 μg/m³)
  6. Delhi, India - AQI 167 (PM2.5 92.7 μg/m³)
  7. Beijing, China - AQI 167 (PM2.5 17.9 μg/m³)
  8. Dubai, UAE - AQI 164 (PM2.5 71.2 μg/m³)
  9. Johannesburg, South Africa - AQI 161 (PM2.5 29.3 μg/m³)
  10. Xian, China - AQI 161 (PM2.5 58.6 μg/m³)

Top 10 cleanest cities right now

  1. La Paz, Bolivia - AQI 10 (PM2.5 0.2 μg/m³)
  2. Cali, Colombia - AQI 17 (PM2.5 1.6 μg/m³)
  3. Stockholm, Sweden - AQI 19 (PM2.5 2.2 μg/m³)
  4. Hua Hin, Thailand - AQI 19 (PM2.5 2.8 μg/m³)
  5. Oslo, Norway - AQI 20 (PM2.5 3.4 μg/m³)
  6. Pattaya, Thailand - AQI 21 (PM2.5 2.9 μg/m³)
  7. Copenhagen, Denmark - AQI 21 (PM2.5 3.3 μg/m³)
  8. Naypyidaw, Myanmar - AQI 22 (PM2.5 4 μg/m³)
  9. Helsinki, Finland - AQI 22 (PM2.5 1.7 μg/m³)
  10. Berlin, Germany - AQI 23 (PM2.5 5.2 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.