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Elev 50 ft, 43.06 °N, 70.78 °W

Portsmouth, NH Severe Weather Alertstar_ratehome

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Current Station
Personal Weather Station
Location: Portsmouth, NH
Elevation: 50ft
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Active Weather Alerts

Extreme Heat Warning
Issued: 10:41 AM Jul. 1, 2026 – National Weather Service
...EXTREME HEAT WARNING REMAINS IN EFFECT FROM 11 AM THIS MORNING TO
8 PM EDT FRIDAY...

* WHAT...Dangerously hot conditions with heat index values up to 111
expected.

* WHERE...Portions of southwest and western Maine and central,
northern, and southern New Hampshire.

* WHEN...From 11 AM this morning to 8 PM EDT Friday.

* IMPACTS...Heat related illnesses increase significantly during
extreme heat and high humidity events.

* ADDITIONAL DETAILS...Overnight low temperatures will only fall
into the 70s, resulting in accumulated heat stress.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

Do not leave young children and pets in unattended vehicles. Car
interiors will reach lethal temperatures in a matter of minutes.

Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.

&&

Air Quality Alert
Issued: 7:35 PM Jun. 30, 2026 – National Weather Service
...AIR QUALITY ALERT IN EFFECT FROM 10 AM TO 10 PM EDT WEDNESDAY...

The New Hampshire Department of Environmental Services has issued a
Air Quality Alert for ozone from 10 AM to 10 PM EDT Wednesday.

The New Hampshire Department of Environmental Services is predicting
unhealthy air quality for sensitive individuals in the above-
mentioned counties. Sensitive individuals include children and older
adults; anyone with lung disease such as asthma, emphysema, and
bronchitis; and people who are active outdoors. Even healthy
individuals may experience mild health effects and should consider
limiting strenuous or prolonged outdoor activities.

For additional information, please visit the New Hampshire
Department of Environmental Prediction website at,
https://www4.des.state.nh.us/airdata/

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