Air Quality Alert AIR QUALITY ALERT - Portsmouth Seacoast  - Rockingham

A cold front will cross the area through this evening, helping to bring an end to high temperatures and humidity. Isolated thunderstorms will be possible with the front, mainly across southern New Hampshire. Temperatures and humidity continue to decrease tomorrow, with fair weather. Low pressure crosses south of New England late Monday through Tuesday, bringing the next chance for rain.
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Updated: @ 07/04/2026 21:45 - next update at 21:50  
Summary / Temperature Wind Rain Outlook
Partly cloudy Partly cloudy
Currently: 71.1, Max: 87.4, Min: 67.5 71.1°F
Colder 2.0°F than last hour.

Comfortable

Feels like: 71°F

24-hr difference
-6.1°FColder 6.1°F than yesterday at this time.
  Today Yesterday
High: 87.4°F
12:51
93.7°F
14:23
Low: 67.5°F
05:32
70.7°F
05:02
 Calm
0
Gust:
0 mph
0 Bft - Calm
Today: 17 mph 13:13
Gust Month: 17 mph July 04
Rain Today: 0.01 in
Rain Rate (/hr): 0 in
Rain Yesterday: 0 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: 89 % Decreased 1.0% since last hour.
Dew Point: 67.7°F Decreased 2.4°F since last hour.
Barometer: 29.8 inHg Rising 0.03  inHg/hr
Baro Trend: Steady
Sunrise: 05:12
Sunset: 20:30
Moonset: 09:40
Moonrise: 23:08
Waning Gibbous
Waning Gibbous, Moon at 19 days in cycle
77%
Illuminated
UV Index Solar Radiation
   0.0    None
High: 9.0 @ 12:07
0 W/m2 (0 %)
High: 1001 @  12:07
 NWS Weather Forecast  - Outlook: Tonight & Sunday
Tonight

Tonight: Slight Chance Rain Showers then Partly Cloudy
Slight Chance Rain Showers then Partly Cloudy

Lo 60 °F
NWS forecast: A slight chance of rain showers before 10pm. Partly cloudy, with a low around 60. West wind 0 to 5 mph. Chance of precipitation is 20%.
 
Sunday

Sunday: Mostly Sunny
Mostly Sunny

Hi 84 °F
NWS forecast: Mostly sunny, with a high near 84. Southwest wind 0 to 5 mph.