Dense fog blanketed the New York City area Wednesday morning, creating hazardous driving conditions and forcing transportation adjustments, according to the National Weather Service.

Visibility dropped to less than a quarter-mile at times during the morning commute, prompting the weather service to urge drivers to reduce speeds, use high beam headlights, and maintain greater following distances until conditions improve around 10 a.m.

The foggy conditions forced the Staten Island Ferry to modify its schedule throughout the morning, with departures running every 20 minutes instead of the regular timetable, according to city officials.

Beyond the visibility concerns, New Yorkers face elevated air pollution levels through midnight Wednesday. The state Department of Environmental Conservation issued an air quality alert, indicating the Air Quality Index is predicted to exceed 100 for fine particulate matter, according to the agency.

The poor air quality creates potential health risks for children and people with preexisting medical conditions, officials said. Residents should consider limiting strenuous outdoor activities during the alert period, according to state environmental officials.

Light rain is expected to move into the region Wednesday morning and continue into the evening, according to meteorologists. “We’re not expecting the rain to really be heavy — more of like a light to maybe very brief moderate rain,” said James Tomasini of the National Weather Service.

The precipitation pattern will persist through Thursday night into Friday, according to weather forecasters. The weekend may bring another storm system that could include snow, though meteorologists caution it’s too early for definitive predictions.

“The system and the latest guidance has trended a little bit further offshore to the east, but we’re continuing to monitor those trends,” Tomasini said. Current projections show approximately a 50 percent chance of snow for Sunday night, he added.

Despite the challenging weather conditions, temperatures will provide relief from the Arctic air that gripped the region over recent weeks, according to the National Weather Service. Highs are forecast to reach the 40s through Saturday, with overnight lows settling around the mid-30s.

The weather service describes the current conditions as a departure from the “brutal cold” that recently affected the area, though officials warn residents to remain prepared for changing conditions throughout the week.

The fog advisory particularly affects morning commuters, as reduced visibility creates dangerous driving conditions on highways and local roads. Transportation officials recommend allowing extra travel time and exercising increased caution during the morning rush hour.

Air quality concerns add another layer of complexity to the weather situation. Fine particulate matter levels above 100 on the Air Quality Index indicate unhealthy conditions for sensitive groups, including young children, elderly residents, and individuals with respiratory or heart conditions.

The combination of fog, air quality issues, and incoming precipitation represents a multi-faceted weather challenge for the metropolitan area. While temperatures remain relatively mild compared to recent Arctic conditions, the various atmospheric factors require continued vigilance from residents and commuters.

Weather patterns are expected to remain unsettled through the weekend, with meteorologists closely monitoring the potential storm system that could bring snow to the region. The National Weather Service continues tracking the storm’s eastward trend, which may reduce local impacts but requires ongoing assessment as conditions develop.