Mapping the Trends in Pollution

Good news for the United States is found in a recent series of maps by NASA. Air pollution has significantly improved around the country.

1 minute read

February 6, 2016, 1:00 PM PST

By James Brasuell @CasualBrasuell


United States from Space

MarcelClemens / Shutterstock

Rick Noack shares the news: "NASA scientists created a series of maps that show the "human fingerprint on global air quality." The images offer insights into air pollution in nearly 200 cities around the world, as well as in neighboring areas."

"To illustrate to what extent pollution has increased or decreased, the NASA researchers measured concentrations between 2005 and 2014. Blue areas indicate a decrease in pollution; orange indicates an increase," adds Noack.

Noack notes the good news: "the scientists concluded that the United States, Europe and Japan have greatly improved their air quality." The bad news, however: "pollution has worsened in parts of China, India and the Middle East."

Average nitrogen dioxide concentrations across the United States in 2005. (Map created by NASA's Goddard Space Flight Center)

Average nitrogen dioxide concentrations across the United States in 2014. (Map created by NASA's Goddard Space Flight Center)

The trend map showing the decreases in nitrogen dioxide concentrations from 2005 to 2014. (Map created by NASA's Goddard Space Flight Center)

A detailed post on NASA also explains the study and the mapping exercise.

Friday, February 5, 2016 in The Washington Post

portrait of professional woman

I love the variety of courses, many practical, and all richly illustrated. They have inspired many ideas that I've applied in practice, and in my own teaching. Mary G., Urban Planner

I love the variety of courses, many practical, and all richly illustrated. They have inspired many ideas that I've applied in practice, and in my own teaching.

Mary G., Urban Planner

Get top-rated, practical training

Logo for Planetizen Federal Action Tracker with black and white image of U.S. Capitol with water ripple overlay.

Planetizen Federal Action Tracker

A weekly monitor of how Trump’s orders and actions are impacting planners and planning in America.

April 30, 2025 - Diana Ionescu

Close-up on Canadian flag with Canada Parliament building blurred in background.

Canada vs. Kamala: Whose Liberal Housing Platform Comes Out on Top?

As Canada votes for a new Prime Minister, what can America learn from the leading liberal candidate of its neighbor to the north?

April 28, 2025 - Benjamin Schneider

Hot air balloons rise over Downtown Boise with the State Capitol building visible amidst the high rises.

The Five Most-Changed American Cities

A ranking of population change, home values, and jobs highlights the nation’s most dynamic and most stagnant regions.

April 23, 2025 - GoodMigrations

People biking along beach path with moored ship in San Diego, California.

San Diego Adopts First Mobility Master Plan

The plan provides a comprehensive framework for making San Diego’s transportation network more multimodal, accessible, and sustainable.

3 hours ago - SD News

Sleeping in Public

Housing, Supportive Service Providers Brace for Federal Cuts

Organizations that provide housing assistance are tightening their purse strings and making plans for maintaining operations if federal funding dries up.

4 hours ago - KSL

Conductor walks down platform next to Amtrak train at station in San Jose, California.

Op-Ed: Why an Effective Passenger Rail Network Needs Government Involvement

An outdated rail network that privileges freight won’t be fixed by privatizing Amtrak.

5 hours ago - Streetsblog USA

Urban Design for Planners 1: Software Tools

This six-course series explores essential urban design concepts using open source software and equips planners with the tools they need to participate fully in the urban design process.

Planning for Universal Design

Learn the tools for implementing Universal Design in planning regulations.

Senior Manager Operations, Urban Planning

New York City School Construction Authority

Building Inspector

Village of Glen Ellyn

Manager of Model Development

Central Transportation Planning Staff/Boston Region MPO