Pollen forecast by city › Johannesburg
Pollen forecast for Johannesburg today
Pollen levels in Johannesburg today by trees, grasses and weeds, the forecast for the coming days, and when each plant’s pollen season usually starts and peaks.
In Johannesburg the largest share of airborne pollen comes from trees rather than grass: in two years of national monitoring by the South African Pollen Monitoring Network (2019–2021), plane tree pollen ranked first and grass second. Plane and other trees are not included in this forecast, which covers grass pollen only. Grass seasons in South Africa follow rainfall: in that study Johannesburg’s grass pollen rose from January, peaked in February and March and stayed significant into mid-winter, while an earlier study had found peaks from October to January and again in May. Local records are short, so treat the calendar below as an estimate; actual timing depends on rain and temperature.
Pollen today
- Grasses3 · moderate
Data updated Mon, 12 Oct, 04:25, local time.
Pollen forecast for the next days
| Day | Overall | Grasses |
|---|---|---|
| Tomorrow, Tue, 13 Oct | Overall3 · moderate | Grasses3 · moderate |
| Wed, 14 Oct | Overall3 · moderate | Grasses3 · moderate |
| Thu, 15 Oct | Overall3 · moderate | Grasses3 · moderate |
| Fri, 16 Oct | Overall3 · moderate | Grasses3 · moderate |
In bloom now
None of the tracked allergy plants is in its pollen season right now.
Starting soon
- Grassesin ~1 wk
Pollen season calendar for Johannesburg
When pollen of each plant is usually in the air in Johannesburg, month by month. The calendar is an estimate for a typical year; the actual start shifts with the weather by a week or two.
| Plant | July | August | September | October | November | December | January | February | March | April | May | June |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Grassesseason Oct – Feb, peak Nov – Jan |
On high-pollen days
- Pollen levels are usually highest on warm, dry and windy days; rain washes pollen out of the air for a while.
- Keep windows closed when the level is high and air rooms after rain.
- After a long time outdoors, change clothes and wash your hair; dry laundry indoors.
- Sunglasses help keep pollen out of your eyes.
- If you have allergy symptoms, talk to a doctor — this page does not replace medical advice.
About the data
Current levels and the forecast come from the Google Pollen API. It is a model forecast on the Universal Pollen Index (0–5), not a measurement from a local pollen trap. The season calendar is AllergoRadar’s estimate based on model data and published pollen calendars. Reference information only, not medical advice.
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