Today's Weather Forecast - Hiroshima

Today's weather in Hiroshima. high 27°C (81°F), low 22°C (72°F). Mainly Clear.

Today’s Hourly Weather Outlook

Morning6 AM – Noon24°
Wind speed
4 km/h
Rain probability
82%
AfternoonNoon – 6 PM27°
Wind speed
5 km/h
Rain probability
76%
Evening6 PM – Midn25°
Wind speed
5 km/h
Rain probability
2%
NightMidn – 6 AM22°
Wind speed
6 km/h
Rain probability
54%

24-Hour Rain & Temperature Forecast

Sunrise & Sunset

Sunrise
Dawn 5:20 AM
Total Daylight
Day completeSolar noon 12:06 PM
Sunset
Dusk 6:53 PM
RemainingDaylight ended
Solar elevation-51°
vs yesterday-1 min

Air Quality Index & Health Advice

Air Quality Index

Air quality level
Good
Dominant pollutant
Dominant: PM2.5
Monitoring station
Misasamachi, Hiroshima-ken, Japan (三篠小学校広島市西区)
PM2.5
34μg/m³
PM10
13μg/m³
O₃
15.2ppb
NO₂
3.8ppb
SO₂
1.5ppb
CO
3.4ppm
0Good → Hazardous300+

5-Day Weather Forecast

Full 15-Day Forecast

Weather Insight

Hiroshima is forecast to reach a high of 27°C today, with an overnight low around 22°C. Expect a high chance of rain (82% probability) and light winds averaging 6 km/h. Air quality is currently Moderate (AQI 60), driven mainly by PM2.5 at 12 μg/m³.

Today vs Normal

27°C0° below normal

The long-term average high for today is 27°C.

15 of the last 28 days with published data ran above normal.

That's a break from the pattern - today's forecast runs below normal even though the recent stretch mostly ran above.

2026-08-28: 28°C28°2026-08-29: 31°C31°2026-08-30: 32°C32°2026-08-31: 32°C32°2026-09-01: 30°C30°2026-09-02: 31°C31°2026-09-03: 26°C26°2026-09-04: 23°C23°2026-09-05: 28°C28°2026-09-06: 24°C24°2026-09-07: 26°C26°2026-09-08: 27°C27°

Red = above normal, blue = at or below · last 12 days

Air Quality

Air Quality
Moderate

Air quality is acceptable for most people. Unusually sensitive individuals should consider reducing prolonged or heavy outdoor exertion.