Residents across seven U.S. states are being advised to limit driving and other pollution-producing activities as air quality alerts remain in effect through Tuesday night.
According to the National Weather Service, alerts have been issued for California, Ohio, New York, New Jersey, Connecticut, Pennsylvania, and Michigan. The warnings, active since early Monday, are aimed at reducing ozone pollution and protecting public health.
People are being urged to avoid activities that contribute to ozone formation, such as refueling vehicles, using gas-powered lawn equipment, or lighting charcoal grills.
In the Northeast, ground-level ozone—primarily caused by car exhaust and emissions from other states—is considered one of the most severe pollution problems. The New York State Department of Environmental Conservation emphasized that elevated ozone levels can significantly impact health, especially for sensitive groups like children, the elderly, and those with respiratory conditions.
High ozone levels were forecasted in several New York areas, including the Bronx, Queens, Kings, Richmond, Westchester, and Rockland counties. The public is advised to limit strenuous outdoor activities during these conditions.
In California, the alert stems from windblown dust, while in Michigan, officials pointed to “ozone-conducive” weather conditions at the height of the state’s ozone season. “We are in the peak of ozone season,” the alert read, warning of poor air quality through Monday.
Meteorologist Jonathon Rocco posted on X that all 21 counties in New Jersey are under an air quality alert, warning that ozone levels may become unhealthy for sensitive individuals due to the hot and humid weather.
Meanwhile, a dangerous heatwave is sweeping through the Northeast, with states like New York and Massachusetts seeing record-high temperatures. ABC Rhode Island warned that the combination of extreme heat and humidity poses serious health risks, especially for vulnerable groups.
Experts recommend avoiding driving, walking or biking when possible, and consolidating errands to help reduce emissions during this period.
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