Historical exposure to drought — Land soil moisture anomaly in Harrow and Hillingdon
Harrow and Hillingdon: Historical exposure to drought — Land soil moisture anomaly was -9.09 Percentage change in 2025. ◆ Volatile
Historical exposure to drought — Land soil moisture anomaly in Harrow and Hillingdon, 1950–2025
Source: Organisation for Economic Co-operation and Development. Measured in Percentage change.
Analysis
The most recent figure for historical exposure to drought — land soil moisture anomaly in Harrow and Hillingdon is -9.09 Percentage change, measured in 2025.
That represents a change of down 465.5% on the previous year and down 562.5% over ten years.
Over the whole period, historical exposure to drought — land soil moisture anomaly in Harrow and Hillingdon peaked at 10.06 Percentage change in 1980 and was at its lowest, -15.28 Percentage change, in 1961.
Harrow and Hillingdon ranks 2788th of 3112 regions on this measure, in the bottom quarter.
The series is highly variable year to year, so single readings are best treated with caution.
Historical exposure to drought — Land soil moisture anomaly in Harrow and Hillingdon, year by year
| Year | Percentage change | Change |
|---|---|---|
| 1950 | -4.51 Percentage change | — |
| 1951 | 1.2 Percentage change | -126.6% |
| 1952 | -2.55 Percentage change | -312.7% |
| 1953 | 1.87 Percentage change | -173.4% |
| 1954 | -0.3134 Percentage change | -116.7% |
| 1955 | -10.8 Percentage change | +3344.9% |
| 1956 | -7.87 Percentage change | -27.1% |
| 1957 | -9.5 Percentage change | +20.8% |
| 1958 | 4.55 Percentage change | -147.8% |
| 1959 | -12.4 Percentage change | -372.8% |
| 1960 | 0.5383 Percentage change | -104.3% |
| 1961 | -15.28 Percentage change | -2939.5% |
| 1962 | -4.97 Percentage change | -67.5% |
| 1963 | 0.4353 Percentage change | -108.8% |
| 1964 | -9.09 Percentage change | -2187.8% |
| 1965 | -5.03 Percentage change | -44.6% |
| 1966 | 2.65 Percentage change | -152.7% |
| 1967 | 1.05 Percentage change | -60.4% |
| 1968 | 5.71 Percentage change | +442.9% |
| 1969 | 0.2182 Percentage change | -96.2% |
| 1970 | 1.61 Percentage change | +637.1% |
| 1971 | 3.38 Percentage change | +109.9% |
| 1972 | 0.0757 Percentage change | -97.8% |
| 1973 | -0.9441 Percentage change | -1346.5% |
| 1974 | -1.03 Percentage change | +9.6% |
| 1975 | -6.82 Percentage change | +559.5% |
| 1976 | -9.2 Percentage change | +34.9% |
| 1977 | 2.05 Percentage change | -122.3% |
| 1978 | 0.2795 Percentage change | -86.4% |
| 1979 | 4.43 Percentage change | +1483.0% |
| 1980 | 10.06 Percentage change | +127.2% |
| 1981 | 7.32 Percentage change | -27.2% |
| 1982 | 2.33 Percentage change | -68.2% |
| 1983 | -0.4839 Percentage change | -120.8% |
| 1984 | -4.86 Percentage change | +903.9% |
| 1985 | 4.18 Percentage change | -186.0% |
| 1986 | 2.9 Percentage change | -30.5% |
| 1987 | 5.44 Percentage change | +87.4% |
| 1988 | 3.86 Percentage change | -29.0% |
| 1989 | -10.74 Percentage change | -378.1% |
| 1990 | -13.7 Percentage change | +27.6% |
| 1991 | 1.62 Percentage change | -111.9% |
| 1992 | 4.4 Percentage change | +170.7% |
| 1993 | 1.4 Percentage change | -68.2% |
| 1994 | 2.46 Percentage change | +75.9% |
| 1995 | -12.72 Percentage change | -617.7% |
| 1996 | -4.85 Percentage change | -61.9% |
| 1997 | -7.92 Percentage change | +63.2% |
| 1998 | 3.91 Percentage change | -149.3% |
| 1999 | -0.6217 Percentage change | -115.9% |
| 2000 | 7.67 Percentage change | -1333.6% |
| 2001 | 2.98 Percentage change | -61.2% |
| 2002 | 2.1 Percentage change | -29.5% |
| 2003 | -5.07 Percentage change | -341.8% |
| 2004 | 0.3099 Percentage change | -106.1% |
| 2005 | 3.69 Percentage change | +1090.1% |
| 2006 | 1.8 Percentage change | -51.2% |
| 2007 | 4.25 Percentage change | +136.3% |
| 2008 | 6.63 Percentage change | +56.0% |
| 2009 | -7.17 Percentage change | -208.1% |
| 2010 | -1.1 Percentage change | -84.7% |
| 2011 | -11.45 Percentage change | +941.6% |
| 2012 | 4.77 Percentage change | -141.6% |
| 2013 | 1.26 Percentage change | -73.6% |
| 2014 | 2.82 Percentage change | +124.0% |
| 2015 | 1.97 Percentage change | -30.1% |
| 2016 | -0.7958 Percentage change | -140.5% |
| 2017 | 2.57 Percentage change | -423.0% |
| 2018 | -2.57 Percentage change | -199.8% |
| 2019 | -1.77 Percentage change | -31.0% |
| 2020 | -2.39 Percentage change | +35.1% |
| 2021 | 4.98 Percentage change | -308.3% |
| 2022 | -1.8 Percentage change | -136.1% |
| 2023 | 2.24 Percentage change | -224.7% |
| 2024 | 2.49 Percentage change | +11.1% |
| 2025 | -9.09 Percentage change | -465.5% |
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1950s | -4.03 Percentage change | -12.4 Percentage change | 4.55 Percentage change | 10 |
| 1960s | -2.38 Percentage change | -15.28 Percentage change | 5.71 Percentage change | 10 |
| 1970s | -0.6192 Percentage change | -9.2 Percentage change | 4.43 Percentage change | 10 |
| 1980s | 2 Percentage change | -10.74 Percentage change | 10.06 Percentage change | 10 |
| 1990s | -2.6 Percentage change | -13.7 Percentage change | 4.4 Percentage change | 10 |
| 2000s | 1.72 Percentage change | -7.17 Percentage change | 7.67 Percentage change | 10 |
| 2010s | -0.4303 Percentage change | -11.45 Percentage change | 4.77 Percentage change | 10 |
| 2020s | -0.5954 Percentage change | -9.09 Percentage change | 4.98 Percentage change | 6 |
More environment data for Harrow and Hillingdon
- River flooding exposure — Cropland share exposed to river flooding 4.68 Percentage of agricultural land area (2022)
Frequently asked questions
- What is historical exposure to drought — land soil moisture anomaly in Harrow and Hillingdon?
- Historical exposure to drought — land soil moisture anomaly in Harrow and Hillingdon was -9.09 Percentage change in 2025, according to Organisation for Economic Co-operation and Development.
- What is the highest historical exposure to drought — land soil moisture anomaly recorded in Harrow and Hillingdon?
- The highest recorded value was 10.06 Percentage change in 1980.
- What is the lowest historical exposure to drought — land soil moisture anomaly recorded in Harrow and Hillingdon?
- The lowest recorded value was -15.28 Percentage change in 1961.
- How does Harrow and Hillingdon rank for historical exposure to drought — land soil moisture anomaly?
- Harrow and Hillingdon ranks 2788th out of 3112 regions with data for 2025.
- Is historical exposure to drought — land soil moisture anomaly rising or falling in Harrow and Hillingdon?
- Over the last ten years it is down 562.5%. The long-run trend across the full record is volatile.
- Where does this Harrow and Hillingdon data come from?
- The figures come from Organisation for Economic Co-operation and Development, published as part of Historical exposure to drought — Land soil moisture anomaly. Statizoid updates them automatically from the source API.
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About this data
The dataset provides annual anomalies in land and cropland soil moisture content of the top soil layer (0 to 7 cm) compared to the reference period 1981-2010. Exposure indicators to drought have been prepared by the Organisation for Economic Co-operation and Development (OECD). Please see the working paper for a more complete description of the methods. The datasets span the period 1981-2024 and is the result of the use of a variety of geospatial data sources, including the ERA5-Land averaged monthly data of volumetric soil moisture and ESA CCI land cover data. Average anomalies have been calculated for both land and cropland exposure to drought. The dataset has a global coverage on a national level; on the sub-national TL2 level (i.e. large subnational regions) results are reported for all OECD countries as well as for Argentina, Brazil, China, India, Indonesia and South Africa. A number of aggregates are included: Euro area, European Union, Advanced economies, Emerging market economies, G7, G20, OECD, OECD Europe, OECD Asia Oceania, OECD Americas and the LAC region. Data source(s): Copernicus Climate Change Initiative land cover data and Copernicus Climate Data Store monthly soil moisture data based on the ERA5-Land reanalysis dataset. Contact: ENV.Stat@oecd.org