🇮🇩 Weather in Pematangsiantar
Map Overlays:
Hourly Forecast for Pematangsiantar
02:00
20°
37%
03:00
20°
35%
04:00
20°
29%
05:00
19°
20%
06:00
19°
20%
07:00
21°
26%
08:00
25°
23%
09:00
26°
8%
10:00
29°
5%
11:00
30°
13%
12:00
29°
38%
13:00
28°
62%
14:00
28°
65%
15:00
27°
72%
16:00
26°
75%
17:00
25°
72%
18:00
23°
70%
19:00
22°
51%
20:00
22°
43%
21:00
21°
78%
22:00
21°
74%
23:00
21°
76%
00:00
20°
67%
01:00
20°
39%
14-Day Forecast for Pematangsiantar
2026-10-08
Light rain shower
30° /
19°
2026-10-09
Light rain shower
30° /
20°
2026-10-10
Light rain shower
26° /
20°
2026-10-11
Light rain shower
28° /
19°
2026-10-12
Light rain shower
26° /
20°
2026-10-13
Light rain shower
25° /
20°
2026-10-14
Mist
28° /
19°
Additional Forecasts for Pematangsiantar
Air Quality
💨 US EPA Index 4 (Unhealthy)
CO (Carbon Monoxide) 1181.0 μg/m³
O₃ (Ozone) 44.0 μg/m³
NO₂ (Nitrogen Dioxide) 20.0 μg/m³
SO₂ (Sulphur Dioxide) 5.2 μg/m³
PM2.5 (Fine particles) 87.5 μg/m³
PM10 (Coarse particles) 88.5 μg/m³
Historical Weather
Weather Forecasts for Other Cities in Indonesia
Weather in Pematangsiantar — FAQ
Answers refreshed each request based on current conditions in Pematangsiantar.
What is the weather like right now in Pematangsiantar?
Right now in Pematangsiantar, Indonesia the temperature is 19.9°C (feels like 22.2°C), with light rain. Relative humidity is 95% and wind is 5.0 km/h.
What is today's high and low temperature in Pematangsiantar?
Today's forecast high in Pematangsiantar is 29.6°C and the overnight low is 19.2°C. The diurnal range — high minus low — depends on cloud cover; clear days swing more than overcast ones.
Will it rain in Pematangsiantar today?
The chance of precipitation in Pematangsiantar today is 87%. Forecast accuracy is highest within the next 6 hours and decreases steadily out to 14 days.
How often does the weather here update?
Current observations refresh every 15-60 minutes from the nearest monitoring stations operated by national meteorological agencies. The hourly forecast updates approximately every hour; the 7- and 14-day outlook is recomputed several times per day.
What does 'feels like' temperature mean?
Feels-like (apparent) temperature accounts for humidity, wind chill and direct sunshine — variables that change how the human body perceives heat or cold. On hot, humid days it can be 3-7°C above the actual reading; on cold windy days it can be 5-15°C below.
Why does the temperature in Pematangsiantar differ from nearby cities?
Even short distances can change temperatures noticeably. Pematangsiantar's reading reflects altitude, proximity to large bodies of water, urban heat island effects, and the exact location of the monitoring stations supplying the data. Coastal cities are typically milder and more humid than inland equivalents.