California Sulfur Dioxide (SO₂) Level
United States
See Air Quality ofCalifornia
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World Air Quality Report
Sulfur Dioxide (SO₂): Sulfur dioxide is the major component in acid rain as it easily dissolves in the water and forms sulfuric acid. And SO2 in acid rain can harm forests, crops, and aquatic ecosystems, change soil acidity, and deteriorate building materials and historical monuments.
Most Polluted Cities 2026
United States
Analyze the real-time most air polluted cities in the country.
Standard Value
1.
Port Huron, Michigan
Good
1xabove Standard
2.
Dearborn, Michigan
Good
1xbelow Standard
3.
Allen Park, Michigan
Good
2xbelow Standard
4.
River Rouge, Michigan
Good
2xbelow Standard
5.
Detroit, Michigan
Good
2xbelow Standard
6.
Lompoc, California
Good
8xbelow Standard
7.
Springfield, Illinois
Good
8xbelow Standard
8.
Albany, Georgia
Good
8xbelow Standard
9.
Salem, Oregon
Good
8xbelow Standard
10.
Holland, Michigan
Good
8xbelow Standard
Last Updated: 03 Jun 2026, 11:00 PM
AQI City RankingsUncovering the Sources of Sulfur Dioxide (SO₂): Where Does It Come From?
Chemical manufacturing
The production processes that emit sulfur dioxide.
Industries
Emissions from manufacturing and industrial processes.
Power plants generation
Released during the burning of fossil fuels for electricity.
Petroleum Refineries
Emits from refining crude oil into various products.
Heavy-duty vehicles
Exhaust from trucks and buses using diesel fuel.Short-Term SO₂ Exposure Impacts
Nose irritation
Discomfort in the nasal passages.
Throat and lung irritation
Inflammation and pain in the throat.
Coughing and phlegmz
Persistent cough and mucus production.
Asthma attacks
Triggering of asthma symptoms or existing asthma.
Wheezing
High-pitched whistling sound when breathing.Why you should care about Sulfur Dioxide (SO₂)?
Know More About SO₂ Sensor
