How accurate is the forecast for Heemskerk?

Forecasts are pulled from leading meteorological models and refreshed automatically every 30 minutes. Short-range accuracy (next 24 hours) is typically within 1–2°C and 80–90% for precipitation.

How often is the data updated?

Current conditions and the hourly outlook refresh every 30 minutes; daily forecasts every hour.

What does the air-quality (AQI) value mean?

We display the European AQI on a scale from Good (0–20) to Extremely poor (>100), blending PM2.5, PM10, NO₂ and O₃.

Clima Map

Heemskerk NL

June 9, 2026 · 1:29 am

13^°

Clear sky

Feels like 12°C

Humidity: 88%
Wind: 11 km/h WNW
Pressure: 1011 hPa
Cloud: 4%

Nearby weather

Cities near Heemskerk

Compare weather conditions in surrounding cities and open any local forecast instantly.

3.2 km Beverwijk NL View forecast 3.3 km Uitgeest NL View forecast 4.1 km Castricum NL View forecast 5.9 km Velsen-Zuid NL View forecast 6.6 km Limmen NL View forecast 6.8 km Assendelft NL View forecast 7 km IJmuiden NL View forecast 10 km Zaandijk NL View forecast

Weather notice Forecasts are for general planning. During severe weather, follow official alerts and local authority instructions.