3 September 2021
Tree pollen levels in Johannesburg were high, with a peak in plane tree pollen seen. Elsewhere tree pollen levels were low to moderate, in part due to cooler temperatures and rainy weather. Tree pollen levels should increase again during the next week of sampling where we can expect significant levels of plane, mulberry, birch, cypress, […]
10 September 2021
Summary Trees are flowering at most sites now and significant tree counts were seen in Johannesburg, Pretoria and Cape Town. Cypress, plane, mulberry and birch have been detected in significant numbers and a variety of other trees are entering their pollen release cycle. Weed and grass levels are low at all the sites. Remember that […]
17 September 2021
Summary High tree pollen counts across the country. The tree season is still peaking as cypress, mulberry, plane, pine and hackberry are reaching significant concentrations in the atmosphere. Many other trees are flowering, so check your city for more details. Grasses are increasing in Bloemfontein and Kimberley, while weed levels remain low in most cities. […]
1 October 2021
Summary The grass season is starting with high grass pollen counts detected in Cape Town (>20 grains/cubic meter). High tree pollen levels were also recorded in Cape Town and in Bloemfontein, with moderate tree counts seen in Johannesburg. Overall, the tree pollen counts have decreased at most sites across the country. Cape Town Grasses reached […]
2 July 2021
Cape Town Grass, tree, weed and mould counts were low. Tree pollen included gum (Myrtaceae), mulberry (Moraceae), forest elder (Nuxia sp.) and karee (Rhus sp. / Searsia sp.). Nettle (Urticaceae) was the only weed pollen detected. Johannesburg Grass, trees, weeds and moulds were low. Tree pollen included karee (Rhus sp. / Searsia sp.), birch (Betula […]
15 October 2021
Summary High pollen alert for Cape Town with high grass counts, high tree levels (cypress, eucalyptus, pine) and moderate weed counts due to a spike in sorrel. Grasses are still low in the other cities, which are all situated in summer rainfall regions. Tree pollen has decreased in most cities across South Africa, but significant […]
22 October 2021
Summary High grass counts were seen in Cape Town, with low counts still observed in the summer rainfall areas. Tree pollen showed a significant increase in Johannesburg but decreased in Cape Town and remained low at the other sites. High levels of charcoal particles were seen in Bloemfontein due to fires. Overall low pollen and […]
29 October 2021
Summary Tree pollen decreased in all cities except Pretoria where a spike for the allergenic mesquite tree (Prosopis sp.) was detected. Grass levels were moderate in Cape Town, but low at all the other sampling sites. Moulds / fungal spore levels were moderate in Durban, but low in the other cities. Weed pollen was low […]
5 November 2021
Summary The rain that has fallen over many parts of South Africa recently has reduced pollen counts and spurred mould growth. Moulds often increase in spring and autumn especially after rain, as they thrive in warm, wet weather. High mould levels were seen in Durban, with lower counts in the rest of the country. Spikes […]
