Johannesburg, South Africa
7-day weather outlook — conditions across the region
7-day forecast — temperature, precipitation & wind
7-day wind & rain chance
Signal — Current Conditions
17.8°C
Clear sky · feels 16.6°C · humidity 50%
Signal — Wind
7.3 km/h
Gusts to 21.2 km/h · direction 171°
Signal — Pressure & Sun
1025 hPa
Sunrise 06:09 · Sunset 17:59
Signal — Sky & Visibility
0% cloud
Visibility 36.4 km · dew point 7.1°C
Signal — Earthquake
48.3 / 100
240 events considered (30yr, 300km radius)
Nearest M5.5+: 10 km WNW of Welkom, South Africa (239.5 km, M5.7)
Signal — Flood / Terrain
3 / 100
Elevation 1762 m · slope 2.3°
Signal — Economic Impact
$330 / yr expected
Based on country average estimate property value ($194,400)
Signal — Wildfire (24h)
3 hotspots
Nearest: 68.1 km away
Signal — Air Quality
39 AQI
Dominant pollutant: pm25 · Alexandra-NAQI, City of Johannesburg, South Africa
Signal — UV Index
7.7 (High)
Today's peak UV, Open-Meteo
Signal — Tsunami Risk
LOW
Based on largest nearby earthquake magnitude (30yr history)
Nearest other major location: Soweto, South Africa (20 km)
Next 24 hours — hourly detail
Next 24 hours — pressure & humidity
USGS FDSN
Signal — Solar Wind
411 km/s (Slightly elevated)
Magnetic field: 4.0 nT (Quiet)
Signal — Geomagnetic (Kp)
1.0 / 9
Quiet — planetary K-index
Signal — Solar Flare
B3.4
Current GOES X-ray flux class
Solar wind speed and magnetic field strength indicate current space weather activity. Elevated or storm-level readings can disrupt satellites, GPS accuracy, and power grids. This is a planetary-scale signal, not specific to this location — typical quiet conditions run under 400 km/s wind speed and under 5 nT magnetic field.
Source: NOAA SWPC (planetary signal, same for every location)
Sources: USGS (earthquakes), Open-Elevation (terrain), Open-Meteo (weather). Illustrative estimate, not a certified engineering or actuarial assessment.
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