What is the air quality in Koster today?

The current Air Quality Index (AQI) in Koster is 51 (Moderate). PM2.5 concentration is 12.14 µg/m³.

What is the temperature in Koster right now?

The current temperature in Koster is 15.7°C (feels like 15.7°C). Humidity is 66.8% and wind speed is 20.4 km/h.

Air Quality in Koster, South Africa

Partly Cloudy

15.7°C · 66.8% humidity

15.7°

Feels 15.7°

Moderate

Unusually sensitive people should consider reducing prolonged outdoor exertion.

Calibrated model

Nearby Monitoring Stations

AQI Forecast

25 9pm

37 12am

37 3am

37 6am

25 9am

12 12pm

25 3pm

25 6pm

66.8%

Humidity

20.4 km/h

Wind WSW

1022.9 hPa

Pressure

14.9

UV Extreme

GoodModerateUSGUnhealthyVery UnhealthyHazardous

What is the weather forecast for Koster?

Temperature & Precipitation

PM2.512.14 µg/m³ ✓ WHO

Moderate

PM1027.45 µg/m³

Good

UV INDEX14.9

Extreme

What is the 7-day forecast for Koster?

04-10

25.2° 15.7°

04-11

26.5° 16.8°

04-12

25.7° 17.2°

04-13

26.6° 17.0°

04-14

27.6° 17.7°

04-15

26.5° 15.2°

2.38 mm

04-16

23.0° 15.0°

8.44 mm

Both models agree Avg diff: 1.5°C

What cities are near Koster?

87 Rustenburg 28 Ventersdorp 151 Marikana 19 Carletonville 76 Hartbeestfontein-A 22 Coligny 18 Bagale 32 Lichtenburg 43 Randfontein 55 Zeerust

Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-04-10T00:36 UTC.