Air Quality in Koster, South Africa
Partly Cloudy
12.6°C · 66.3% humidity
12.6°
Feels 12.6°
51
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
Calibrated model
Nearby Monitoring Stations
Koster's air quality — share it
AQI Forecast
34
11pm
54
54
51
2am
34
34
34
5am
34
54
54
8am
34
25
25
11am
25
25
25
2pm
25
25
27
5pm
27
34
34
8pm
27
27
Air Quality Index Trend
38h · 1 stnKoster's air quality is influenced by vehicle emissions, biomass burning, dust, and industrial activity. Dry seasons and Harmattan winds can significantly elevate particulate pollution levels.
66.3%
Humidity
11.1 km/h
Wind WNW
1024.0 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
12.26 µg/m³
PM10
20.55 µg/m³
050100150200300500
What is the weather forecast for Koster?
Temperature & Precipitation
PM2.5 Trend
38h · 1 stationPM2.512.26 µg/m³
✓ WHO
Moderate
PM1020.55 µg/m³
Good
UV INDEX0.7
Low
What is the 7-day forecast for Koster?
06-09
22.5° 12.6°
06-10
19.5° 9.2°
06-11
19.2° 9.3°
06-12
17.9° 10.1°
06-13
18.4° 8.6°
06-14
24.9° 10.2°
0.06 mm
06-15
18.5° 9.4°
Both models agree
Avg diff: 3.2°C
What cities are near Koster?
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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 2026-06-09T00:40 UTC.