Air temperature, hot days, tropical nights and icing days - Cities in Roma
Roma: Air temperature, hot days, tropical nights and icing days - Cities was -2.18 Degrees celsius in 2025. ◆ Volatile
Air temperature, hot days, tropical nights and icing days - Cities in Roma, 1981–2025
Source: Organisation for Economic Co-operation and Development. Measured in Degrees celsius.
Analysis
In 2025, air temperature, hot days, tropical nights and icing days - cities in Roma stood at -2.18 Degrees celsius. That is the lowest value across all 45 years on record.
Compared with earlier readings it is down 213.5% on the previous year and down 348.9% over ten years.
Over the whole period, air temperature, hot days, tropical nights and icing days - cities in Roma peaked at 1.92 Degrees celsius in 2024 and was at its lowest, -2.18 Degrees celsius, in 2025.
Roma ranks 1204th of 1314 regions on this measure, in the bottom quarter.
The series is highly variable year to year, so single readings are best treated with caution.
Air temperature, hot days, tropical nights and icing days - Cities in Roma, year by year
| Year | Degrees celsius | Change |
|---|---|---|
| 1981 | -0.9385 Degrees celsius | — |
| 1982 | 0.0627 Degrees celsius | -106.7% |
| 1983 | -0.3651 Degrees celsius | -681.9% |
| 1984 | -1.03 Degrees celsius | +182.5% |
| 1985 | -0.0732 Degrees celsius | -92.9% |
| 1986 | -0.2414 Degrees celsius | +229.7% |
| 1987 | -0.0662 Degrees celsius | -72.6% |
| 1988 | 0.1026 Degrees celsius | -254.9% |
| 1989 | -0.2914 Degrees celsius | -383.9% |
| 1990 | 0.1532 Degrees celsius | -152.6% |
| 1991 | -0.5947 Degrees celsius | -488.1% |
| 1992 | 0.1059 Degrees celsius | -117.8% |
| 1993 | -0.1706 Degrees celsius | -261.1% |
| 1994 | 0.7102 Degrees celsius | -516.2% |
| 1995 | -0.4485 Degrees celsius | -163.1% |
| 1996 | -0.5519 Degrees celsius | +23.1% |
| 1997 | 0.309 Degrees celsius | -156.0% |
| 1998 | -0.0828 Degrees celsius | -126.8% |
| 1999 | 0.0511 Degrees celsius | -161.7% |
| 2000 | 0.5045 Degrees celsius | +886.9% |
| 2001 | 0.4708 Degrees celsius | -6.7% |
| 2002 | 0.2982 Degrees celsius | -36.7% |
| 2003 | 0.8417 Degrees celsius | +182.3% |
| 2004 | 0.1623 Degrees celsius | -80.7% |
| 2005 | -0.4291 Degrees celsius | -364.4% |
| 2006 | 0.2392 Degrees celsius | -155.7% |
| 2007 | 0.3967 Degrees celsius | +65.9% |
| 2008 | 0.3634 Degrees celsius | -8.4% |
| 2009 | 0.5744 Degrees celsius | +58.0% |
| 2010 | -0.0609 Degrees celsius | -110.6% |
| 2011 | 0.3678 Degrees celsius | -704.0% |
| 2012 | 0.5169 Degrees celsius | +40.5% |
| 2013 | 0.3083 Degrees celsius | -40.4% |
| 2014 | 0.8087 Degrees celsius | +162.3% |
| 2015 | 0.8774 Degrees celsius | +8.5% |
| 2016 | 0.8499 Degrees celsius | -3.1% |
| 2017 | 0.7865 Degrees celsius | -7.5% |
| 2018 | 1.15 Degrees celsius | +45.9% |
| 2019 | 1.05 Degrees celsius | -8.4% |
| 2020 | 0.9611 Degrees celsius | -8.6% |
| 2021 | 0.932 Degrees celsius | -3.0% |
| 2022 | 1.81 Degrees celsius | +93.9% |
| 2023 | 1.55 Degrees celsius | -13.9% |
| 2024 | 1.92 Degrees celsius | +23.8% |
| 2025 | -2.18 Degrees celsius | -213.5% |
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1980s | -0.3158 Degrees celsius | -1.03 Degrees celsius | 0.1026 Degrees celsius | 9 |
| 1990s | -0.0519 Degrees celsius | -0.5947 Degrees celsius | 0.7102 Degrees celsius | 10 |
| 2000s | 0.3422 Degrees celsius | -0.4291 Degrees celsius | 0.8417 Degrees celsius | 10 |
| 2010s | 0.6654 Degrees celsius | -0.0609 Degrees celsius | 1.15 Degrees celsius | 10 |
| 2020s | 0.8326 Degrees celsius | -2.18 Degrees celsius | 1.92 Degrees celsius | 6 |
More climate change data for Roma
- Air temperature, hot days, tropical nights and icing days - Cities 12.86 Degrees celsius (2025)
- Climate projections by scenario, 2030–2060 – Cities and FUAs 18.75 Degrees celsius (2060)
- Climate projections by scenario, 2030–2060 – Cities and FUAs 2.63 Degrees celsius (2060)
- Greenhouse gas emissions - Cities and FUAs — GHG emissions from 0.07 Tonnes of CO2-equivalent (2024)
- Greenhouse gas emissions - Cities and FUAs — GHG emissions from 8.41 Tonnes of CO2-equivalent (2024)
- Greenhouse gas emissions - Cities and FUAs — GHG emissions from 1.18 Tonnes of CO2-equivalent (2024)
- Greenhouse gas emissions - Cities and FUAs — GHG emissions from 1.1 Tonnes of CO2-equivalent (2024)
- Greenhouse gas emissions - Cities and FUAs — GHG emissions from power 0.45 Tonnes of CO2-equivalent (2024)
- Greenhouse gas emissions - Cities and FUAs — GHG emissions from road 1.96 Tonnes of CO2-equivalent (2024)
- Greenhouse gas emissions - Cities and FUAs — GHG emissions total 12.61 Tonnes of CO2-equivalent (2024)
Frequently asked questions
- What is air temperature, hot days, tropical nights and icing days - cities in Roma?
- Air temperature, hot days, tropical nights and icing days - cities in Roma was -2.18 Degrees celsius in 2025, according to Organisation for Economic Co-operation and Development.
- What is the highest air temperature, hot days, tropical nights and icing days - cities recorded in Roma?
- The highest recorded value was 1.92 Degrees celsius in 2024.
- What is the lowest air temperature, hot days, tropical nights and icing days - cities recorded in Roma?
- The lowest recorded value was -2.18 Degrees celsius in 2025.
- How does Roma rank for air temperature, hot days, tropical nights and icing days - cities?
- Roma ranks 1204th out of 1314 regions with data for 2025.
- Is air temperature, hot days, tropical nights and icing days - cities rising or falling in Roma?
- Over the last ten years it is down 348.9%. The long-run trend across the full record is volatile.
- Where does this Roma data come from?
- The figures come from Organisation for Economic Co-operation and Development, published as part of Air temperature, hot days, tropical nights and icing days - Cities and FUAs — Change in air temperature at 2 meters from 1981–2010 period. 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 indicators of air temperature, hot days, tropical nights and icing days. Data sources and methodology Indicators are estimated using ERA5-Land data. Air temperature indicators correspond to the average annual air temperature at a height of 2 meters. Hot days correspond to the number of days when the maximum temperature exceeds 35°C. Tropical nights correspond to the days when the minimum temperature is above 20°C, and icing days to the number of days when the maximum temperature is below 0°C. 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. 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 (Air temperature, hot days, tropical nights and icing days - 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