sulfur dioxide

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Weathered statue with a damaged face and surface, showing significant erosion from acid rain and pollution.

New York City skyline tinted orange from wildfire smoke.

Two pie charts compare sources of sulfur dioxide and nitrogen oxides emissions contributing to acid rain. The first chart shows electric utilities produce 66% of SO2, other sources 29%, and vehicles 5%. The second chart shows vehicles produce 58% of NOx, other sources 24%, and electric utilities 18%.

sulfur dioxide: Media

chemical compound

Videos

New York City skyline tinted orange from wildfire smoke.

How Is Air Quality Measured?

Even something as simple as breathing can get complicated.

Video: Encyclopædia Britannica, Inc.

Images

Weathered statue with a damaged face and surface, showing significant erosion from acid rain and pollution.

acid rain

Statue eroded by acid rain.

© Julius Fekete/stock.adobe.com

Two pie charts compare sources of sulfur dioxide and nitrogen oxides emissions contributing to acid rain. The first chart shows electric utilities produce 66% of SO2, other sources 29%, and vehicles 5%. The second chart shows vehicles produce 58% of NOx, other sources 24%, and electric utilities 18%.

SO₂ and NO_x emissions in the U.S.

SO₂ and NO_x emissions in the U.S., 2008.

Encyclopædia Britannica, Inc.

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