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Jul 6, 2016 12:39 PM

NH1 First Alert Weather: Air quality alert issued for NH

NH1 Chief Meteorologist

Today is the hottest day of the year so far. Highs temperatures will be climbing into the middle 90's and the humidity is starting to build. The New Hampshire Department of Environmental Services has issued an Air Quality Alert in effect until 11 PM tonight for Rockingham & Hillsborough counties including NE MA and eastern MA as well.

As the heat and humidity builds, the air can start to become unhealthy as low level pollutants become suspended and a ground level ozone develops. The high levels of unhealthy air can affect sensitive individuals including young children, the elderly, and those who suffer from respiratory problems like asthma, emphysema and bronchitis.

Even healthy individual can become tired or suffer ill effects and should consider limiting prolonged outdoor exposure or strenuous activity.

Air quality is expected to remain poor on Thursday with a humid airmass remaining in place. Scattered showers, thunderstorms and cooler temperatures will provide relief for the end of the week.

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