Heat stress - Cities and FUAs — Mean population exposure to heat in Alkmaar
Alkmaar: Heat stress - Cities and FUAs — Mean population exposure to heat was 2.19 Days per year in 2025. ◆ Volatile
Heat stress - Cities and FUAs — Mean population exposure to heat in Alkmaar, 1981–2025
Source: Organisation for Economic Co-operation and Development. Measured in Days per year.
Analysis
In 2025, heat stress - cities and fuas — mean population exposure to heat in Alkmaar stood at 2.19 Days per year.
The figure is up 1,862.8% on the previous year and up 2,763.5% over ten years.
Over the whole period, heat stress - cities and fuas — mean population exposure to heat in Alkmaar peaked at 6.46 Days per year in 2019 and was at its lowest, 0 Days per year, in 1984.
That places Alkmaar 1162nd out of 1315 regions with data for 2025, putting it in the bottom quarter.
The series is highly variable year to year, so single readings are best treated with caution.
Heat stress - Cities and FUAs — Mean population exposure to heat in Alkmaar, year by year
| Year | Days per year | Change |
|---|---|---|
| 1981 | 0.0062 Days per year | — |
| 1982 | 0.4291 Days per year | +6848.1% |
| 1983 | 0.0816 Days per year | -81.0% |
| 1984 | 0 Days per year | -100.0% |
| 1985 | 0 Days per year | — |
| 1986 | 0.006 Days per year | — |
| 1987 | 0 Days per year | -100.0% |
| 1988 | 0 Days per year | — |
| 1989 | 0 Days per year | — |
| 1990 | 1.57 Days per year | — |
| 1991 | 0.1048 Days per year | -93.3% |
| 1992 | 0.0055 Days per year | -94.8% |
| 1993 | 0 Days per year | -100.0% |
| 1994 | 2.33 Days per year | — |
| 1995 | 0.041 Days per year | -98.2% |
| 1996 | 0.0159 Days per year | -61.2% |
| 1997 | 1.99 Days per year | +12426.8% |
| 1998 | 0.0102 Days per year | -99.5% |
| 1999 | 0.0108 Days per year | +5.3% |
| 2000 | 0.0156 Days per year | +45.0% |
| 2001 | 2.21 Days per year | +14053.4% |
| 2002 | 1.04 Days per year | -52.7% |
| 2003 | 2.68 Days per year | +157.0% |
| 2004 | 0.0468 Days per year | -98.3% |
| 2005 | 0.3711 Days per year | +692.0% |
| 2006 | 2.22 Days per year | +497.1% |
| 2007 | 0 Days per year | -100.0% |
| 2008 | 0.0396 Days per year | — |
| 2009 | 0.0148 Days per year | -62.6% |
| 2010 | 0.5776 Days per year | +3796.8% |
| 2011 | 0.4475 Days per year | -22.5% |
| 2012 | 1.14 Days per year | +155.4% |
| 2013 | 0.9578 Days per year | -16.2% |
| 2014 | 0.0347 Days per year | -96.4% |
| 2015 | 0.0765 Days per year | +120.2% |
| 2016 | 1.05 Days per year | +1271.5% |
| 2017 | 0.0441 Days per year | -95.8% |
| 2018 | 2.79 Days per year | +6234.8% |
| 2019 | 6.46 Days per year | +131.2% |
| 2020 | 6.44 Days per year | -0.3% |
| 2021 | 0.0624 Days per year | -99.0% |
| 2022 | 2.42 Days per year | +3786.8% |
| 2023 | 2.86 Days per year | +18.2% |
| 2024 | 0.1116 Days per year | -96.1% |
| 2025 | 2.19 Days per year | +1862.9% |
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1980s | 0.0581 Days per year | 0 Days per year | 0.4291 Days per year | 9 |
| 1990s | 0.6083 Days per year | 0 Days per year | 2.33 Days per year | 10 |
| 2000s | 0.8639 Days per year | 0 Days per year | 2.68 Days per year | 10 |
| 2010s | 1.36 Days per year | 0.0347 Days per year | 6.46 Days per year | 10 |
| 2020s | 2.35 Days per year | 0.0624 Days per year | 6.44 Days per year | 6 |
More population data for Alkmaar
- Population by age and sex - Cities and FUAs 203,643 Persons (2025)
- Population by citizenship - Cities and FUAs 3.5 Percentage of population (2025)
- Foreign-born population - Cities and FUAs 13.2 Percentage of population (2025)
- Population and built-up density - Cities and FUAs — Urbanised area 17 Square kilometres (2030)
Frequently asked questions
- What is heat stress - cities and fuas — mean population exposure to heat in Alkmaar?
- Heat stress - cities and fuas — mean population exposure to heat in Alkmaar was 2.19 Days per year in 2025, according to Organisation for Economic Co-operation and Development.
- What is the highest heat stress - cities and fuas — mean population exposure to heat recorded in Alkmaar?
- The highest recorded value was 6.46 Days per year in 2019.
- What is the lowest heat stress - cities and fuas — mean population exposure to heat recorded in Alkmaar?
- The lowest recorded value was 0 Days per year in 1984.
- How does Alkmaar rank for heat stress - cities and fuas — mean population exposure to heat?
- Alkmaar ranks 1162nd out of 1315 regions with data for 2025.
- Is heat stress - cities and fuas — mean population exposure to heat rising or falling in Alkmaar?
- Over the last ten years it is up 2,763.5%. The long-run trend across the full record is volatile.
- Where does this Alkmaar data come from?
- The figures come from Organisation for Economic Co-operation and Development, published as part of Heat stress - Cities and FUAs — Mean population exposure to heat stress. Statizoid updates them automatically from the source API.
Download this data
CSV · JSON — 45 observations, free to reuse under OECD Terms and Conditions (attribution required).
About this data
This dataset provides an indicator of population exposure to heat stress. Data sources and methodology The indicator uses the Universal Thermal Comfort Index (UTCI). The UTCI enables to assess the impact of atmospheric conditions on the human body by considering air temperature, wind, radiation and humidity. UTCI values from 32°C to 38°C are considered as strong heat stress, from 38°C to 46°C as very strong heat stress, and above 46°C as extreme heat stress. Population exposure to heat stress was computed using the hourly thermal comfort indices grids from the Copernicus Climate Data Store (Di Napoli C. et al.). For each 0.25° by 0.25° grid cell, the number of days for which the maximum UTCI value is above each heat stress threshold (32°C, 38°C and 46°C) is computed. FUA and city level indicators correspond to the population-weighted average number of days above each heat stress threshold, obtained by intersecting the computed grid with the Global Human Settlement Population layer (European Commission, GHSL Data Package 2023). These estimates may differ from official subnational climate statistics due to differences in methodological approaches, such as the use of reanalysis based top down modelling versus in situ observations, along with variations in input data sources, spatial resolution, and the models and algorithms used to generate temperature estimates. Defining FUAs and cities The OECD, in cooperation with the EU, has developed a harmonised definition of functional urban areas (FUAs) to capture the economic and functional reach of cities based on daily commuting patterns (OECD, 2012). FUAs consist of: A city – defined by urban centres in the degree of urbanisation, adapted to the closest local administrative units to define a city. A commuting zone – including all local areas where at least 15% of employed residents work in the city. The delineation process includes: Assigning municipalities surrounded by a single FUA to that FUA. Excluding non-contiguous municipalities. The correspondence table between SAUs and FUAs/cities is available in parquet and csv format. The definition identifies 1 272 FUAs and 1 269 cities in all OECD member countries except Costa Rica and three accession countries. Cite this dataset OECD Regions, cities and local areas database (Heat stress - Cities and FUAs), http://oe.cd/geostats Further information OECD Local Data Portal OECD Regions and Cities at a Glance For questions and/or comments, please email CitiesStat@oecd.org