Past Reports

Summary Grass counts were moderate in Cape Town and Pretoria and trees counts are still high in Cape Town, where pine tree is dominant. Mean counts for Bloemfontein show that...

Summary Grass was moderate in Cape Town and Bloemfontein. Tree counts are high in Johannesburg and Bloemfontein where the dominant tree is false olive. Weeds were low at all sites...

Summary Tree counts are decreasing but are still high at many South African sites. The dominant tree is oak at most sites, but in Johannesburg it is bushwillow. Grasses are...

Summary Tree pollen is subsiding but is still high at most of the sites. The dominant trees are oak (Quercus), plane and false olive. Grasses are increasing in Pretoria and...

Summary The dominant tree at all the sites with high tree counts was plane, except for Johannesburg where oak tree pollen had the highest counts. Grasses are now moderate in...

Summary Tree pollen has increased at the coastal sites and plane pollen is the dominant pollen at many sites, followed by hackberry and oak, so high tree counts were seen...

Summary Tree counts are peaking at most of the sites, especially the inland sites. The dominant trees this week are hackberry, plane and mulberry, but strong peaks were also seen...

Summary The tree season is in full cry and the dominant trees are plane and cypress at the inland sites. Tree pollen is increasing at our coastal sites. Cape Town...

Summary Tree pollen is now flowering across the country although the coastal sites still show a greater variety of trees rather than high concentrations. Cypress is still the dominant pollen....

PLEASE NOTE THE REPORT FOR 22 AUGUST 2025 IS DELAYED AS MOST OF THE AEROBIOLOGISTSHAVE BEEN ATTENDING THE NATIONAL ALLERGY CONFERENCE 20-22 AUGUST. Summary The increase in tree pollen continues...

Summary The winter flowering cypress tree is the dominant pollen in Johannesburg and Bloemfontein. Low temperatures and rain at many sites reduced pollen in the ambient air but the greater...

Summary In Gauteng (Johannesburg, Vanderbijlpark, Pretoria), the trees have begun their pollen release cycle, and cypress is dominant in these cities. High tree concentrations were also detected in Bloemfontein, where...

Summary The tree pollen season has begun in Johannesburg, where high tree concentrations were seen. The dominant tree is the allergenic cypress in Johannesburg and cypress pollen was seen at...

Summary The low temperatures at all sites continue to inhibit pollen and mould concentrations in the air, but the trees are stirring, as indicated by the greater variety of tree...

Summary Low pollen and mould concentrations were detected at all the sampling sites during this very cold midwinter sampling week. Cape Town Pollen concentrations were low. No weed pollen was...

Summary Pollen was barely present in the air at this time of year at all the sampling sites, and moulds were seen in low concentrations. Rain, low temperatures with frost...

Summary Tree, grass and weed pollen  was low at most sites that were read during this chilly midwinter period, when rain, hail and snow removes pollen from the air. Cape Town...

Summary Tree, grass and weed pollen concentrations were consistently low during this midwinter sampling week. Cape Town The grass, tree and weed pollen counts were flat in this midwinter period....

Summary Tree pollen is increasing in Bloemfontein where a significant peak for oak tree was seen. After the very cold weather in many parts of the country, grasses and weeds...

Summary Grasses were moderate in Kimberley but the tree, grass and weed pollen concentrations at all the other sites were low. Cape Town Pollen and fungal spores were low at...

Summary Airborne pollen was found in low concentrations at all sites except Bloemfontein, where tree pollen is approaching moderate levels. Cape Town Low pollen concentrations included the trees Morella (waxberry),...

Summary No strong pollen or mould peaks are reported for this early winter period. Cape Town Pollen and mould concentrations were extremely low. Trees detected included gum (Myrtaceae), pine (Pinaceae)...

Summary Pollen is low at all sites but grasses are moderate in Gqeberha. Moulds showed small peaks for Cladosporium in Pretoria, which is now operating again. Cape Town Low pollen...

Summary Cape Town Grasses were low. Low tree concentrations include cypress (Cupressaceae), Australian pine (Casuarina) and pine(Pinaceae). Weeds were mugwort (Artemisia), iris (Iridaceae) and erica (Ericaceae). moulds were low. Johannesburg...