Weekly Report

24 January 2020

City
Overall Risk
Tree Pollen
Grass Pollen
Weed Pollen
Mould Spores
Cape Town
Johannesburg
Bloemfontein
Durban
Pretoria
Port Elizabeth
Kimberley

 

Cape Town

Grass, tree (Casuarina and cypress) were low. Weed levels (English Plantain and fern) were also low and fungal spore levels were extremely low during this protracted, hot, dry period.

Johannesburg

The grass counts maintained a constant low presence in the atmosphere. Tree pollen is declining as the trees complete their flowering cycles. Cypress, eucalyptus, olive and plane pollen types were detected. Weed pollen appeared in low numbers and only goosefoot was detected. Moulds were low throughout the sampling week.

Bloemfontein

Grass counts were high and the levels were consistently >50 grains/cu M/day throughout this sampling week. Tree pollen counts were low to moderate as olive, oak, cypress, rhus and pine continued to flower. Weed pollen levels were low and only daisy and English Plantain pollen was seen. Moulds were very low.

Durban:

Grass counts were low during this sampling week with very hot weather followed by rain. No tree pollen was detected in the air. Weed levels were low and included the types: ragweed and ferns. Moulds were moderate.

Pretoria

Grass counts were moderate during this sampling week. Tree pollen levels declined. Flowering trees included: acacia, Casuarina, jacaranda, eucalyptus, olive and stinkwood. Weed pollen levels were low and included the types: daisy and goosefoot. Mould levels were low.

Port Elizabeth

Grass levels were very low during this sampling week. Tree pollen types: palm, olive, Casuarina and pine were low and weed pollen consisting of Euphorbia and daisy was similarly low. Mould levels were consistently low.

Kimberley

Grass counts were moderate to high throughout the week and even on days with rain. Tree counts were low, consisting of Morus (fig or mulberry) and olive, and the weed levels were also low (goosefoot, daisy and fern). Fungal spores were very low.

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