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Weather in Johannesburg Today

Johannesburg Weather Forecast – Live 24-Hour Highveld Plateau Tracker

Stay updated with the most accurate tracking for the weather in Johannesburg today on WeatherTomorrow.pk. Whether you are navigating your morning commute along the M1 highway, planning corporate meetings in Sandton, or arranging a weekend visit to the Maboneng Precinct, our live portal tracks essential atmospheric shifts across South Africa’s primary economic engine.

Johannesburg’s high-altitude plateau geography (nearly 1,750 meters above sea level) creates dynamic microclimates marked by sharp temperature drops and sudden convective summer storm cells. Use our integrated interactive dashboard below to track real-time temperatures, exact feels-like indices, precipitation metrics, and localized weather warnings:

 

Johannesburg

Gauteng, South Africa
21°
Sunny
Sunny
Feels Like 17°
Humidity 23%
Wind 9 km/h
Wind Direction SSW (205°)
Pressure 1016 mb
Visibility 10 km
UV Index 2.7
Cloud Cover 0%

Hourly Forecast

12:00 AM
Clear
21°
Clear
💧 16% 🌧 0% 💨 6.5 km/h
1:00 AM
Clear
20°
Clear
💧 18% 🌧 0% 💨 5 km/h
2:00 AM
Clear
19°
Clear
💧 31% 🌧 1% 💨 4.3 km/h
3:00 AM
Clear
18°
Clear
💧 19% 🌧 1% 💨 5.8 km/h
4:00 AM
Clear
18°
Clear
💧 21% 🌧 0% 💨 6.5 km/h
5:00 AM
Clear
17°
Clear
💧 36% 🌧 1% 💨 5 km/h
6:00 AM
Sunny
17°
Sunny
💧 23% 🌧 0% 💨 8.3 km/h
7:00 AM
Sunny
18°
Sunny
💧 21% 🌧 0% 💨 8.3 km/h
8:00 AM
Sunny
21°
Sunny
💧 23% 🌧 0% 💨 9 km/h
9:00 AM
Sunny
22°
Sunny
💧 19% 🌧 0% 💨 11.5 km/h
10:00 AM
Sunny
24°
Sunny
💧 18% 🌧 0% 💨 12.6 km/h
11:00 AM
Sunny
26°
Sunny
💧 17% 🌧 0% 💨 12.2 km/h
12:00 PM
Sunny
27°
Sunny
💧 16% 🌧 0% 💨 15.5 km/h
1:00 PM
Sunny
28°
Sunny
💧 16% 🌧 0% 💨 18.4 km/h
2:00 PM
Sunny
28°
Sunny
💧 17% 🌧 1% 💨 19.1 km/h
3:00 PM
Sunny
28°
Sunny
💧 17% 🌧 0% 💨 20.5 km/h
4:00 PM
Sunny
28°
Sunny
💧 18% 🌧 0% 💨 20.5 km/h
5:00 PM
Sunny
27°
Sunny
💧 22% 🌧 0% 💨 18.4 km/h
6:00 PM
Sunny
26°
Sunny
💧 21% 🌧 0% 💨 19.1 km/h
7:00 PM
Clear
25°
Clear
💧 23% 🌧 0% 💨 14.8 km/h
8:00 PM
Clear
23°
Clear
💧 31% 🌧 1% 💨 13 km/h
9:00 PM
Clear
23°
Clear
💧 26% 🌧 0% 💨 11.9 km/h
10:00 PM
Clear
22°
Clear
💧 27% 🌧 0% 💨 14 km/h
11:00 PM
Clear
20°
Clear
💧 35% 🌧 1% 💨 10.1 km/h

📈 Weather Trends

Temperature

Chance of Rain

Wind Speed

Humidity

3-Day Forecast

Thursday
2026-10-22
Sunny
28° / 17°
🌧 0%
💨 20.5 km/h
💧 22%
☀ UV 14
Friday
2026-10-23
Sunny
29° / 16°
🌧 0%
💨 15.8 km/h
💧 22%
☀ UV 14.2
Saturday
2026-10-24
Sunny
29° / 16°
🌧 1%
💨 17.3 km/h
💧 38%
☀ UV 13.3

🌿 Air Quality

US EPA Index
2
Moderate
Air quality is acceptable for most people. Sensitive individuals may experience minor effects.
Air Quality Level
1 Good Low risk
2 Moderate Acceptable ● Current
3 Sensitive Sensitive groups
4 Unhealthy Everyone
5 Very Unhealthy Increased risk
6 Hazardous Emergency
US EPA Index 2
UK DEFRA Index 2
PM2.5 18.2 µg/m³
PM10 18.6 µg/m³
CO 346 µg/m³
O₃ 121 µg/m³
NO₂ 23.1 µg/m³
SO₂ 45.9 µg/m³
AQI categories are based on the US EPA air quality index supplied by the weather provider.

Sun & Moon

🌅
Sunrise
05:26 AM
🌇
Sunset
06:18 PM
🌙
Moonrise
03:03 PM
🌘
Moonset
03:03 AM
🌕
Moon Phase
Waxing Gibbous
✨
Illumination
80%

Johannesburg Weather Today – Live 24-Hour Urban Trends & Graphs

Before planning your outdoor business routines, daily commutes, or transit schedules across the city, checking the live weather in johannesburg today gives you a decisive advantage. Our platform features an intuitive, rolling 24-hour hourly forecast timeline. Because afternoon air masses can drop temperatures sharply or spark swift lightning storms unexpectedly, relying on generic daily averages can leave your schedule vulnerable.

  • Interactive Trend Charts: Deep-dive into active, visual graphs detailing shifting percentages for Chance of Rain, Wind Speed velocities, and dynamic Humidity levels over a rolling 24-hour period.
  • High-Altitude Thermal Profiles: Monitor precise ambient mercury readings alongside the actual calculated “feels-like” temperature index, which balances comfortably lower than the coast due to altitude tracking.
  • Astronomical Intervals: Access high-precision daily schedules tracking exact sunrise, sunset, moonrise, and moonset times.

Understanding Jo’burg’s Climate: Crisp Dry Winters & Convective Summer Storms

Johannesburg features a subtropical highland climate strongly modified by its altitude. Summers (December to February) are warm and pleasant, rarely breaching 30°C. However, intense midday solar radiation triggers rapid convective instability, generating famous afternoon lightning storms and sudden downpours that clear the air quickly.

Conversely, the winter season from June to August delivers exceptionally dry, sunny afternoons but crisp, freezing nights, where temperatures routinely drop near single digits, requiring heavy insulation layers.

Advanced Highveld Air Quality & Environmental Monitoring

WeatherTomorrow.pk integrates live air quality monitoring data directly inside our Johannesburg tracker. Due to regional wind patterns carrying dust and urban emissions trapping particulate matter within the plateau basin, checking environmental air factors is critical. Our panel tracks detailed pollutant metrics including fine particulate matter (PM2.5 and PM10), Nitrogen Dioxide (NO2), Sulfur Dioxide (SO2), Carbon Monoxide (CO), and Ozone (O3) concentrations, allowing residents to verify air cleanliness accurately in real time.

Frequently Asked Questions (FAQs)

Why does Johannesburg receive almost all its rain in the summer?

During the summer months, warm, moist air currents pull in from the Indian Ocean, heating up over the continental interior before hitting the high plateau and condensing into rapid afternoon thunderstorms.

Where can I check active thunderstorm warnings for Johannesburg?

Emergency notices regarding heavy downpours, severe lightning hazards, or sudden temperature drops will display instantly at the very top of this page for public safety.