10 March 2023
Summary Grass pollen is increasing in some summer rainfall regions of South Africa. Increased grass levels were seen in Johannesburg, Pretoria and Kimberley. Tree and weed pollen levels are generally...
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3 March 2023
Summary Grass pollen increased to moderate levels in Pretoria, Kimberley and Potchefstroom. Most grass pollen was released in the cooler mornings in Kimberley as the maximum temperatures reached 40ºC, inhibiting...
24 February 2023
Summary Loadshedding at all the sampling sites will have reduced these counts. Pollen was low in most sampling areas except for Potchefstroom, where weeds increased the mean count and Durban,...
17 February 2023
Summary Torrential rain occurred at many of these sites. In cities where rain was prolonged (Johannesburg) pollen and mould was washed from the air so low counts were seen. In...
9 February 2023
Summary The hot, dry weather conditions at most of the South African sampling sites resulted in very low pollen and mould or fungal spores in the atmosphere. The exceptions were...
3 February 2023
Summary Low pollen loads were found from all the sites in the South African Pollen Monitoring network (SAPNET) this week. Ragweed (Ambrosia spp.) was detected from the air of Durban,...
27 January 2023
Summary Many sites experienced high temperatures with no rain during this sampling period and pollen in the ambient air decreased. For the first time during this study, the adhesive on...
20 January 2023
Pollen trigger alerts during this sampling period: Grass pollen is increasing in some of the summer rainfall areas and was moderate in Johannesburg, Pretoria, Bloemfontein and Kimberley. Tree pollen was...
13 January 2023
Summary High grass counts were recorded in Johannesburg, with moderate levels of trees and weeds at this site. Similarly, trees and weeds were moderate in Cape Town. Low pollen counts...
6 January 2023
Summary Bloemfontein had significantly high pollen levels due to an increase in tree pollen, as well as moderate levels of weed and grass pollen. The overall pollen count in Cape...
23 December 2022
Summary This is the year’s last update; new pollen data will follow in January 2023. Moderate pollen levels were seen in Cape Town, Johannesburg and Bloemfontein, with weed pollen slightly...
16 December 2022
Summary A new site was added to the South African Pollen Monitoring Network – Potchefstroom in the North West province – which had moderate grass levels. High overall pollen counts...
9 December 2022
Summary Overall pollen counts were high in Bloemfontein, Johannesburg and Pretoria. A peak in tree pollen was seen in Bloemfontein, with moderate levels also recorded in Johannesburg, Pretoria and Cape...
2 December 2022
Summary Pollen counts were generally low across South Africa during this sampling week. Low to moderate levels of tree pollen were only seen in Johannesburg, Pretoria and Bloemfontein. No new...
25 November 2022
Summary Significant pollen counts were seen in Cape Town, with moderate levels of trees, weeds, and grasses recorded. Pollen levels in the rest of South Africa were low, except in...
18 November 2022
Summary Pollen and fungal spore counts were low across most of South Africa. The tree, weed, and grass counts in Cape Town were moderate with moderate weed counts also recorded...
11 November 2022
Summary Overall, pollen counts were low during this sampling week. Only grasses in Cape Town and trees in Pretoria approached significance, with fungal spores likely high in Durban (no new...
4 November 2022
Summary The grass season is picking up in Cape Town with a peak in grass pollen detected. Elsewhere grasses were low and so were weeds – except in Bloemfontein where...
28 October 2022
Summary Mould, grass, and weed counts were generally low across South Africa. Cape Town displayed moderate grass and weed pollen levels, with weeds similarly moderate in Calvinia and Bloemfontein. Tree...
21 October 2022
Summary Tree counts remain high in Pretoria, with elevated levels also seen in Johannesburg, Bloemfontein, Kimberley and Cape Town. Grass counts in Cape Town and Kimberley were moderate, with moderate...
14 October 2022
Summary Very high tree pollen levels were recorded in Pretoria, with a large spike specifically for plane, olive and ash. Tree counts were high in Johannesburg, Bloemfontein and Kimberley, and...
7 October 2022
Summary Tree counts were high to very high in Cape Town, Johannesburg and Pretoria. Moderate tree counts were detected in Calvinia (elevated mesquite counts) and also in Bloemfontein. Weed and...
30 September 2022
Overall Summary Tree pollen was still high in Bloemfontein, Johannesburg and Cape Town, but is low to moderate in all other areas. Grasses were low throughout the country but moderate...
23 September 2022
Summary High to very high tree counts were observed in Cape Town, the Gauteng province, and likely also in Bloemfontein and Kimberley – based on last week’s data. Grass counts...