Armenia vs Collado Villalba: Cooling and heating degree days - Cities and FUAs — Change in heating
Cooling and heating degree days - Cities and FUAs — Change in heating over time
- Armenia
- Collado Villalba
How they compare
Collado Villalba currently reports 1,250 Degree days against -58.98 Degree days in Armenia, a difference of 1,309 Degree days.
That makes Collado Villalba's figure about 21.2 times Armenia's.
The two have swapped places 23 times across 76 shared years of data; in 1950 it was Armenia ahead.
Armenia ranks 1st and Collado Villalba ranks 3rd of 2 countries.
Across the 8 decades both report, Armenia averaged higher in 4 and Collado Villalba in 4.
Head to head by decade
| Decade | Armenia | Collado Villalba | Difference | Ahead |
|---|---|---|---|---|
| 1950s | 52.07 Degree days | 161.27 Degree days | 109.2 Degree days | Collado Villalba |
| 1960s | 68.77 Degree days | 163.27 Degree days | 94.51 Degree days | Collado Villalba |
| 1970s | 41.47 Degree days | 260.76 Degree days | 219.29 Degree days | Collado Villalba |
| 1980s | 10.5 Degree days | 38.14 Degree days | 27.64 Degree days | Collado Villalba |
| 1990s | -13.21 Degree days | -25.1 Degree days | 11.89 Degree days | Armenia |
| 2000s | 4.99 Degree days | -12.85 Degree days | 17.84 Degree days | Armenia |
| 2010s | -25 Degree days | -99.37 Degree days | 74.37 Degree days | Armenia |
| 2020s | 8.37 Degree days | -6.65 Degree days | 15.02 Degree days | Armenia |
Averages of every year both report within each decade.
Frequently asked questions
- Which has higher cooling and heating degree days - cities and fuas — change in heating, Armenia or Collado Villalba?
- Collado Villalba, at 1,250 Degree days against -58.98 Degree days in Armenia as of 2025.
- What is the difference in cooling and heating degree days - cities and fuas — change in heating between Armenia and Collado Villalba?
- 1,309 Degree days, with Collado Villalba ahead.
- How many years of comparable data are there for Armenia and Collado Villalba?
- 76 years are reported by both, from 1950 to 2025.
- How do Armenia and Collado Villalba rank globally for cooling and heating degree days - cities and fuas — change in heating?
- Armenia ranks 1st and Collado Villalba ranks 3rd of 2 countries.
- Where does this data come from?
- Organisation for Economic Co-operation and Development, published as Cooling and heating degree days - Cities and FUAs — Change in heating degree days from 1981–2010 period to 2020–24 period. Statizoid refreshes it automatically from the source and publishes the full history for both places.
Individual pages
About this data
This dataset provides indicators of Cooling and Heating Degree Days (CDDs and HDDs) for FUAs and cities. CDDs and HDDs are measurements used to estimate energy usage based on outdoor temperature. CDD measures the demand for cooling, while HDD measures the demand for heating, both calculated relative to a baseline temperature. Data sources and methodology The indicators use 0.1-degree resolution grids from the ERA5-Land dataset. ERA5-Land is used as it provides harmonised, globally consistent coverage at fine spatial resolution (0.1 degree), enabling the production of comparable subnational indicators also where national meteorological data are not available at the required scale. Annual CDDs are the sum over a year of the differences between the daily mean outdoor air temperature and the threshold temperature when the outdoor temperature is above the threshold temperature. HDDs are the sum over a year of the differences between the threshold temperature and the daily mean outdoor air temperature when the outdoor temperature is below the threshold temperature. Threshold temperatures are set to 22°C for CDDs and 15°C for HDDs. 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 (Cooling and heating degree days - 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