Portsmouth, N.H. – Unhealthy air quality could put children, older adults, and people with respiratory conditions at risk across Rockingham County starting tonight, as state officials issue a 24-hour air quality alert.
According to the New Hampshire Department of Environmental Services, the alert runs from midnight Tuesday through midnight Wednesday and covers ozone pollution across Rockingham County as well as fine particle pollution at elevations above 3,000 feet. The agency warns that anyone with asthma, emphysema, or other lung conditions should limit outdoor exertion.
Cities including Salem, Derry, Exeter, Portsmouth, and Hampton are under the advisory, with conditions likely to worsen during peak afternoon hours. Outdoor recreation near the coast and in the highlands may be especially hazardous. Residents are urged to stay indoors with filtered air, avoid heavy outdoor exercise, and check on vulnerable neighbors.
While ozone levels typically spike on warm, sunny days, this is the first significant air quality alert of June. Those planning outdoor events Wednesday may want to reschedule or move indoors.
The alert remains in effect until midnight Wednesday. More advisories are possible if poor air conditions persist into late week.
