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Monitoring the blue-green algae situation in summer 2025
The table below shows the blue-green algae observations for week 40 (Tuesday 30.9.2025):
| Observation site | Abundance of algae (0-3) |
| Ahmo beach | 0 |
| Siilinlahti beach swimming pool | 1 |
| Simpan beach | 2 |
| Toivala beach | 0 |
| Panninniemi bathing area | 0 |
| Pöljä bathing place | 0 |
0=no blue-green algae, 0+=individual blue-green algae spots, 1=slight blue-green algae, 2=very blue-green algae, 3=very blue-green algae
The national blue-green algae situation can be viewed on Järviwiki.
