🇬🇧 Weather in Portsmouth
Map Overlays:
Hourly Forecast for Portsmouth
02:00
13°
0%
03:00
13°
0%
04:00
13°
0%
05:00
13°
0%
06:00
13°
0%
07:00
14°
0%
08:00
15°
0%
09:00
16°
0%
10:00
16°
0%
11:00
17°
0%
12:00
17°
0%
13:00
17°
0%
14:00
17°
0%
15:00
17°
0%
16:00
17°
0%
17:00
17°
0%
18:00
17°
0%
19:00
17°
0%
20:00
16°
0%
21:00
15°
0%
22:00
14°
0%
23:00
14°
0%
00:00
14°
0%
01:00
14°
0%
14-Day Forecast for Portsmouth
2026-05-22
Sunny
17° /
13°
2026-05-23
Sunny
19° /
14°
2026-05-24
Sunny
20° /
15°
2026-05-25
Sunny
22° /
15°
2026-05-26
Sunny
21° /
14°
2026-05-27
Patchy rain nearby
20° /
15°
2026-05-28
Sunny
20° /
16°
Additional Forecasts for Portsmouth
Air Quality
💨 US EPA Index 1 (Good)
CO (Carbon Monoxide) 137.8 μg/m³
O₃ (Ozone) 63.0 μg/m³
NO₂ (Nitrogen Dioxide) 12.8 μg/m³
SO₂ (Sulphur Dioxide) 1.2 μg/m³
PM2.5 (Fine particles) 12.8 μg/m³
PM10 (Coarse particles) 16.9 μg/m³