Examples of smog in a Sentence
the city's smog was once so bad that darkness often prevailed, even at noon
Recent Examples of smog from the Web
Even after everything has settled down, the threat of volcanic smog and acid rain may linger.
More than 1,000 residents in the area were told to evacuate and warned about the health hazards of volcanic smog caused by sulfur dioxide released through fissures.
For months, environmental groups have said the new regulations advanced under former President Barack Obama would save money by reducing health care costs such asthma attacks and heart attacks on days of elevated smog.
Ground-level ozone, also referred to as smog, is created when nitrogen oxides and volatile organic compounds form a chemical reaction from sunlight.
The pollutant is a key contributor to lung disease and smog, which contributes to climate change, the settlement notes.
Children, people with respiratory problems such as asthma, and adults who exercise outdoors are most vulnerable to smog.
More: California has eight of 10 most polluted U.S. cities The two pollutants studied were carbon monoxide and nitrogen oxide, both of which contribute to ground-level ozone (smog).
Scientists say rising temperatures from climate change will make smog tougher to control by boosting the photochemical reactions that generate ozone pollution.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'smog.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
SMOG Defined for English Language Learners
Definition of smog for English Language Learners
: fog mixed with smoke : a cloud of dirty air from cars, factories, etc., that is usually found in cities
SMOG Defined for Kids
History for smog
medical Definition of smog
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