Every day since 1940, recomputed nightly
Today, against the record books
Every city temperature below is compared with the same calendar day in every year back to 1940 (ERA5 reanalysis). Percentile 97 means: only 3 percent of all these days were warmer. That is what "unusually warm" actually means.
Nairobi: this year against 85 years of normalBand = the middle 80 percent of all years since 1940 · dashed = median · amber = this year
Source: Open-Meteo / Copernicus ERA5
Right now, ranked by how unusual today is
CityToday, mean so farPercentile for this date, 1940+Normal span (p10 to p90)
Nairobi20.6°
warmer than 100 % of every 22 August since 194016.4° to 18.7°
Lagos26.2°
warmer than 99 % of every 22 August since 194023.9° to 25.2°
Rome29.2°
warmer than 97 % of every 22 August since 194021.6° to 27.3°
Istanbul25.9°
percentile 8820.8° to 26.0°
Moscow18.2°
percentile 6512.8° to 20.8°
Los Angeles24.9°
percentile 6420.9° to 27.4°
Madrid25.0°
percentile 5920.4° to 28.1°
Warsaw18.7°
percentile 5814.3° to 22.4°
Cairo28.8°
percentile 5726.8° to 30.5°
Bogota14.5°
percentile 5712.7° to 15.2°
Stockholm16.7°
percentile 5613.2° to 19.2°
London17.0°
percentile 5513.9° to 19.6°
Paris18.5°
percentile 5415.2° to 22.8°
Mexico City16.0°
percentile 5414.6° to 16.9°
Oslo15.6°
percentile 5213.2° to 19.1°
Berlin17.8°
percentile 4614.6° to 22.4°
Toronto19.8°
percentile 3817.2° to 23.8°
Sao Paulo16.0°
percentile 3612.8° to 21.6°
Chicago20.1°
percentile 2518.8° to 25.4°
Buenos Aires6.2°
colder than 100 % of every 22 August since 19408.8° to 15.7°
The records that still stand (daily mean, since 1940)
CityHottest dayColdest day
Cairo36.5° · 31 May 19614.9° · 6 February 1950
Los Angeles36.1° · 7 September 20201.9° · 22 December 1990
Paris34.2° · 25 June 2026-13.3° · 22 January 1942
Madrid33.7° · 14 July 2022-8.7° · 28 January 1952
Buenos Aires33.1° · 31 December 20251.3° · 14 June 1967
Berlin32.6° · 28 June 2026-22.9° · 11 February 1956
Rome32.5° · 3 July 2025-5.6° · 11 January 1985
Warsaw32.4° · 28 June 2026-27.8° · 14 January 1987
Chicago32.0° · 14 July 1995-28.0° · 19 January 1994
Istanbul31.7° · 23 July 2025-5.1° · 17 January 1963
Toronto30.8° · 24 June 2025-21.8° · 17 January 1982
Lagos30.4° · 29 April 202422.6° · 9 January 1957
London30.3° · 26 June 2026-8.8° · 10 February 1986
Moscow30.1° · 6 August 2010-40.0° · 31 December 1978
Sao Paulo30.0° · 27 September 19615.8° · 30 July 2021
Oslo26.7° · 11 August 1975-27.1° · 8 January 1982
Stockholm25.9° · 26 July 2018-23.3° · 10 January 1987
Mexico City25.4° · 11 May 20243.7° · 17 January 1965
Nairobi23.7° · 25 February 200514.0° · 30 July 1968
Bogota17.2° · 4 February 201010.5° · 29 January 2023