Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock () or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Topic: Ozone

Satellite imagery of the Tonga-Hunga Ha’apai volcano in the South Pacific Ocean on January 15, 2022.

How the Hunga Tonga volcanic eruption caused ozone loss

December 20, 2023

Focus areas:

Topics:

Satellite imagery of the Tonga-Hunga Ha’apai volcano in the South Pacific Ocean on January 15, 2022.

NOAA scientists launch a weather balloon carrying an ozonesonde at the South Pole on October 1, 2023.

2023 ozone hole ranks 12th largest on record, find NOAA and NASA

November 1, 2023

Focus areas:

Topics:

NOAA scientists launch a weather balloon carrying an ozonesonde at the South Pole on October 1, 2023.

A NOAA ozonesonde -- an instrument used to help scientists monitor the Antarctic ozone hole -- ascends over the South Pole in this time-lapse photo taken October 21, 2020. Ideal weather conditions helped create a large, persistent ozone hole that will last into November 2020.

Montreal Protocol emerges as a powerful climate treaty

January 11, 2023

Focus areas:

Topics:

A NOAA ozonesonde -- an instrument used to help scientists monitor the Antarctic ozone hole -- ascends over the South Pole in this time-lapse photo taken October 21, 2020. Ideal weather conditions helped create a large, persistent ozone hole that will last into November 2020.

The view from an ozone balloon floating 100,000 feet above the Colorado Front Range. NOAA scientists based in Boulder, Colorado launch weekly balloons from sites all around the globe to monitor stratospheric ozone concentrations. Floating to over twice the altitude of commercial airliners, the curvature of Earth and inky black of space are clearly visible.

4 facts you might not know about ozone and the Montreal Protocol

January 10, 2023

Focus areas:

Topics:

The view from an ozone balloon floating 100,000 feet above the Colorado Front Range. NOAA scientists based in Boulder, Colorado launch weekly balloons from sites all around the globe to monitor stratospheric ozone concentrations. Floating to over twice the altitude of commercial airliners, the curvature of Earth and inky black of space are clearly visible.

A NOAA ozonesonde -- an instrument used to help scientists monitor the Antarctic ozone hole -- ascends over the South Pole in this time-lapse photo taken October 21, 2020. Ideal weather conditions helped create a large, persistent ozone hole that will last into November 2020.

Antarctic ozone hole slightly smaller in 2022

October 26, 2022

Focus areas:

Topics:

A NOAA ozonesonde -- an instrument used to help scientists monitor the Antarctic ozone hole -- ascends over the South Pole in this time-lapse photo taken October 21, 2020. Ideal weather conditions helped create a large, persistent ozone hole that will last into November 2020.

Ozone hole and ozone concentration over Antarctica on October 7, 2021.

Path to ozone layer recovery reaches milestone

August 23, 2022

Focus areas:

Topics:

Ozone hole and ozone concentration over Antarctica on October 7, 2021.

SpaceX Falcon rocket launch of Arabsat-6A satellite from Kennedy Space Center, April 11, 2021.

Projected increase in space travel may damage ozone layer

June 21, 2022

Focus areas:

Topics:

SpaceX Falcon rocket launch of Arabsat-6A satellite from Kennedy Space Center, April 11, 2021.

Visualization from NOAA's FV-Chem model that simulates how winds distribute smoke from fires in Siberia and North America around the northern hemisphere.

Smoke from wildfires influences ozone pollution on a global scale

February 9, 2022

Focus areas:

Topics:

Visualization from NOAA's FV-Chem model that simulates how winds distribute smoke from fires in Siberia and North America around the northern hemisphere.

Aerial view of the Hudson River in New York City showing the area engulfed in grey smog.

Deodorant smells nice, but it's making cities smoggy

August 3, 2021

Focus areas:

Topics:

Aerial view of the Hudson River in New York City showing the area engulfed in grey smog.

This image shows the ozone concentration over Antarctica for the week of September 14–20, 2020. Experts define the "ozone hole" as the area in which ozone levels are below 220 Dobson Units (dark blue, marked with black triangle on the color bar).

Emissions of banned ozone-depleting gas are back on the decline

February 10, 2021

Focus areas:

Topics:

greenhouse gases

This image shows the ozone concentration over Antarctica for the week of September 14–20, 2020. Experts define the "ozone hole" as the area in which ozone levels are below 220 Dobson Units (dark blue, marked with black triangle on the color bar).

Subscribe to ozone