Air Quality in Pematangsiantar, Indonesia
Drizzle
20.3°C · 95.9% humidity
20.3°
Feels 20.3°
68
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
Calibrated model
Nearby Monitoring Stations
AQI Forecast
83
7am
83
54
68
10am
44
41
39
1pm
38
37
36
4pm
35
55
67
7pm
83
66
66
10pm
66
66
66
1am
66
66
66
4am
66
66
Pematangsiantar's air quality is affected by vehicle emissions, industrial activity, and periodic transboundary haze from agricultural burning. The dry season tends to produce elevated particulate levels. Current PM2.5 concentration in Pematangsiantar is 1.4× the WHO 24-hour guideline of 15 µg/m³.
95.9%
Humidity
20.4 km/h
Wind WSW
1012.4 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
20.28 µg/m³
PM10
27.45 µg/m³
050100150200300500
What is the weather forecast for Pematangsiantar?
Temperature & Precipitation
PM2.520.28 µg/m³
×1.4 WHO
Moderate
PM1027.45 µg/m³
Good
UV INDEX0.7
Low
What is the 7-day forecast for Pematangsiantar?
08-03
29.8° 20.3°
6.31 mm
08-04
26.6° 20.4°
13.69 mm
08-05
27.5° 20.2°
4.75 mm
08-06
29.3° 20.3°
3.38 mm
08-07
30.4° 22.2°
0.87 mm
08-08
30.4° 23.2°
0.06 mm
08-09
30.6° 21.9°
1.06 mm
Both models agree
Avg diff: 2.4°C
What cities are near Pematangsiantar?
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Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-08-08T03:50 UTC.