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Pollution Index by City 2026
Numbeo's pollution rankings page lists cities worldwide by crowd-sourced pollution index from user surveys on air, water, noise, and cleanliness.
Numbeo.com/pollution/rankings.jsp is a crowd-sourced global ranking of cities by pollution levels, based on user surveys about air quality, water, noise, cleanliness, and green spaces. numbeo
What It Shows
Numbeo compiles a Pollution Index (0-100 scale, higher = worse) and Pollution Exp Scale (exponential version emphasizing extremes) for 100s of cities worldwide. numbeo Data comes from visitor surveys over the past 5 years (filtered for spam), weighted heavily on air quality (7x factor), plus water pollution, garbage, noise/light, parks, and comfort to spend time outdoors. numbeo Cities are ranked from most to least polluted; e.g., top polluted often include Lahore or Delhi, while cleanest feature like Singapore or Helsinki. numbeo
How to Use It
- Visit https://www.numbeo.com/pollution/rankings.jsp directly in your browser. numbeo
- Scroll the table to compare cities by Pollution Index (main column) or sort by clicking headers. numbeo
- Click any city name for a detailed breakdown of its survey scores across categories. numbeo
- Switch to "by Country" tab (rankings_by_country.jsp) for national aggregates if needed. numbeo
- Bookmark or revisit periodically, as data updates continuously with new contributions. numbeo
