Air Quality Alert AIR QUALITY ALERT - Portsmouth Seacoast  - Rockingham

High pressure builds in today for fair weather with lower temperatures and humidity levels. Low pressure crosses south of New England late Monday through Tuesday, bringing the next chance for rain. High pressure returns mid week with heat and humidity building for the second half of the week.
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Updated: @ 07/05/2026 05:05 - next update at 05:10  
Summary / Temperature Wind Rain Outlook
Clear Clear
Currently: 56.8, Max: 65.5, Min: 56.7 56.8°F
Colder 0.9°F than last hour.

Cool

Feels like: 57°F

24-hr difference
-11.2°FColder 11.2°F than yesterday at this time.
  Today Yesterday
High: 65.5°F
00:00
87.4°F
12:51
Low: 56.7°F
04:50
65.5°F
23:58
 Calm
0
Gust:
0 mph
0 Bft - Calm
Today: 1 mph 00:17
Gust Month: 17 mph July 04
Rain Today: 0 in
Rain Rate (/hr): 0 in
Rain Yesterday: 0.01 in
Storm Rain: 0 in
This Month: 0.03 in
Season Total: 15.8 in
2 rain days in July.
Sunday

Sunday: Mostly Sunny
Mostly Sunny
Humidity & Barometer Almanac Moon
Humidity: 99 %  
Dew Point: 56.5°F Decreased 0.9°F since last hour.
Barometer: 29.875 inHg Rising 0.01  inHg/hr
Baro Trend: Steady
Sunrise: 05:13
Sunset: 20:29
Moonset: 10:46
Moonrise: 23:27
Waning Gibbous
Waning Gibbous, Moon at 19 days in cycle
75%
Illuminated
UV Index Solar Radiation
   0.0    None
High: 0.0 @ 00:00
0 W/m2 (0 %)
High: 0 @  00:00
 NWS Weather Forecast  - Outlook: Overnight & Sunday
Overnight

Overnight: Patchy Fog
Patchy Fog

Lo 58 °F
NWS forecast: Patchy fog. Partly cloudy, with a low around 58. Northwest wind around 0 mph.
 
Sunday

Sunday: Mostly Sunny
Mostly Sunny

Hi 85 °F
NWS forecast: Mostly sunny, with a high near 85. Northeast wind around 0 mph.