About NaviSlí

Swimming water

Latest results: Dún Laoghaire-Rathdown County Council (dlrcoco.ie). We read DLR's bathing water results page about once an hour: the summary sample date, each site's status, any Prior Warning, Advisory or Prohibition notices, and the per-site PDF reports. DLR samples weekly during the bathing season (1 June to 15 September) and about fortnightly outside it. Results usually take 48 hours to come back from the lab. Results are marked "Not current" when older than 10 days in season or 21 days out of season. If DLR's page can't be read, we show the EPA's latest sample instead and say so.

Annual classifications and formal notices: Environmental Protection Agency (EPA), Bathing Water Open Data on beaches.ie, licence CC BY 4.0. This includes all-season restrictions such as the one at Dún Laoghaire Baths. The annual classification is based on four seasons of results, so it can differ from a single recent sample.

Air quality

Airly sensor network, which includes sensors operated by Dún Laoghaire-Rathdown County Council. We use the nearest real measuring site to the harbour (not an estimate between sites). Readings update roughly hourly.

Tides

Marine Institute tide predictions (high and low water) for Dublin Port, the nearest published station to the harbour. Predictions are astronomical and do not include weather effects. Licence: CC BY 4.0. Checked about every 15 minutes.

Weather

Met Éireann open data point forecast for the harbour, updated several times a day. Licence: CC BY 4.0. We show the issue time and flag forecasts older than 12 hours as not current.

Events

Fáilte Ireland events open data. Licence: CC BY 4.0. Updated daily by Fáilte Ireland; we check it about once an hour. We list upcoming events whose published coordinates are within 5 km of the harbour. Where coordinates are missing, we match the published locality and label it. Recurring events are grouped by title and venue, with all dates listed on the Events page. Listings are provided by organisers; check details with the organiser.

DLR festival listings are read from the council's official events page and event details, checked about once an hour. Only listings categorised as Festivals by DLR are included. Published map coordinates determine distance; where missing, published locality is used and labelled. The Fáilte Ireland CC BY 4.0 licence applies to Fáilte Ireland data only.

Research

A research trial (UrbanDip, DCU with DLR County Council) is testing near real-time water sampling at Dún Laoghaire Baths. Its results are not yet published. Official EPA results remain the primary source.

How fresh is the data?

We check the sources about every 15 minutes. Every result shows its date and age. Water results older than 10 days (in season) or 21 days (out of season) and air readings older than 2 hours are marked "Not current". If a source cannot be reached, we say so and never show substitute figures.

Privacy

We record anonymous usage to improve this service: when the page is opened, and the latest question asked, with email addresses and phone numbers removed. Visit records contain the opening time, landing page, source label and node label from the link. Question records contain the time, node label, language, question (up to 500 characters), topic, whether it was answered and the data sources used. A random visit ID is kept only in your browser's session storage to link questions within that visit. We don't use cookies or ask for your location, and we don't store IP addresses, device details or full conversations. Visitors need no account; administrator accounts are used only to access statistics. Only administrators can read these records. Records are deleted after 12 months by a daily cleanup. Questions are also sent to an AI service to write an answer.