Today's Weather Forecast - Tainan

Today's weather in Tainan. high 30°C (86°F), low 24°C (75°F). Overcast.

Today’s Hourly Weather Outlook

Morning6 AM – Noon26°
Wind speed
5 km/h
Rain probability
83%
AfternoonNoon – 6 PM29°
Wind speed
7 km/h
Rain probability
66%
Evening6 PM – Midn27°
Wind speed
5 km/h
Rain probability
21%
NightMidn – 6 AM24°
Wind speed
8 km/h
Rain probability
0%

24-Hour Rain & Temperature Forecast

Sunrise & Sunset

Sunrise
Dawn 5:14 AM
Total Daylight
Day completeSolar noon 11:55 AM
Sunset
Dusk 6:37 PM
RemainingDaylight ended
Solar elevation-62°
vs yesterday-2 min

Air Quality Index & Health Advice

Air Quality Index

Air quality level
Moderate
Dominant pollutant
Dominant: PM2.5
Monitoring station
Tainan, Taiwan (台南)
PM2.5
65μg/m³
PM10
51μg/m³
O₃
22.4ppb
NO₂
9.1ppb
SO₂
1.6ppb
CO
3.2ppm
0Good → Hazardous300+

5-Day Weather Forecast

Full 15-Day Forecast

Weather Insight

Tainan is forecast to reach a high of 30°C today, with an overnight low around 24°C. That's 1° above the long-term average high of 29°C for this time of year. Expect a high chance of rain (83% probability) and light winds averaging 8 km/h. Air quality is currently Unhealthy (AQI 176), driven mainly by PM2.5 at 96 μg/m³.

Today vs Normal

30°C+1° above normal

The long-term average high for today is 29°C.

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

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

2026-08-28: 29°C29°2026-08-29: 29°C29°2026-08-30: 29°C29°2026-08-31: 28°C28°2026-09-01: 28°C28°2026-09-02: 28°C28°2026-09-03: 29°C29°2026-09-04: 29°C29°2026-09-05: 30°C30°2026-09-06: 29°C29°2026-09-07: 29°C29°2026-09-08: 29°C29°

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

Air Quality

Air Quality
Unhealthy

Health effects can be immediately felt by sensitive groups. Healthy individuals may experience difficulty breathing and throat irritation with prolonged exposure. Limit outdoor activity.