How accurate is the forecast for Hemel Hempstead?

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

Hemel Hempstead GB

June 28, 2026 · 3:27 am

19^°

Ciel dégagé

Ressenti 18°C

Humidité: 75%
Vent: 16 km/h SW
Pression: 1014 hPa
Cloud: 13%

Météo proche

Villes près de Hemel Hempstead

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

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