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New Map Reveals Air Pollution Sources in 2,500 Cities

9/25/2025

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Summary

Story summary

Climate TRACE launched an interactive map to track air pollution in major urban areas.
It identifies PM2.5 and greenhouse gas sources across about 2,500 urban areas.
More than 1.6 billion people live in pollution zones; 900 million are exposed to "super emitters".
In Houston, about 4 million residents are exposed to pollution from 140 facilities; shipping is a major contributor.

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Story summary

Climate TRACE launched an interactive map to track air pollution in major urban areas.
It identifies PM2.5 and greenhouse gas sources across about 2,500 urban areas.
More than 1.6 billion people live in pollution zones; 900 million are exposed to "super emitters".
In Houston, about 4 million residents are exposed to pollution from 140 facilities; shipping is a major contributor.