London's Pulse: Medical Officer of Health reports 1848-1972
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Hints from the Health Department. Leaflet from the archive of the Society of Medical Officers of Health. Credit: Wellcome Collection, London
City of London 1858
[Report of the Medical Officer of Health for London, City of ]
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No. V.—Meteorology of the City of London for each Month in the Year, ending in September 1859, from Observations made at the Engineer's Office, Guildhall, under the direction of Mr. Haywood.
| MONTHS. 1858-9. | Barometer. | Dry Thermometer. | Wet Thermometer or Hygrometer. | Rain Gauges. | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mean Pressure. | Highest Pressure. | Lowest Pressure. | Mean Temperature. | Highest Temperature. | Lowest Temperature. | Mean Daily Range. | Mean Temperature. | Dew Point. | Degree of Humidity. | Weight of vapour in cubic foot of air. | Vapour required to saturate ditto. | Total Fall. | Greatest Fall. | Lowest Fall. | |||||
| Wet Bulb. | Dry Bulb. | On Roof. | On Grnd. | On Roof. | On Grnd. | On Roof. | On Grnd. | ||||||||||||
| Inches. | Inches. | Inches. | Deg. | Deg. | Deg. | Deg. | Deg. | Deg. | Deg. | Deg. | Grns. | Grns. | Ins. | Ins. | Ins. | Ins. | Ins. | Ins | |
| October | 29.951 | 30.559 | 29.312 | 52.4 | 65.6 | 38.4 | 10.6 | 50.6 | 52.4 | 48.1 | 0.83 | 3.8 | 0.8 | 1.27 | 1.35 | 0.24 | 0.24 | 0.02 | 0.02 |
| November | 29.905 | 30.502 | 28.963 | 42.1 | 54.9 | 26.9 | 8.9 | 41.1 | 42.1 | 39.1 | 0.86 | 2.8 | 0.6 | 0.25 | 0.25 | 0.13 | 0.13 | 0.1 | 0.01 |
| December | 29.934 | 30.374 | 29.436 | 43.0 | 53.4 | 33.8 | 7.0 | 41.5 | 43.0 | 39.7 | 0.88 | 2.8 | 0.4 | 1.75 | 1.91 | 0.62 | 0.69 | 0.01 | 0.01 |
| January | 30.190 | 30.740 | 29.533 | 43.2 | 53.3 | 32.2 | 7.8 | 41.7 | 43.2 | 39.9 | 0.88 | 2.8 | 0.4 | 0.66 | 0.66 | 0.22 | 0.22 | 0.1 | 0.01 |
| February | 29.965 | 30.633 | 29.323 | 44.8 | 57.2 | 34.9 | 9.6 | 42.7 | 44.8 | 40.0 | 0.83 | 2.8 | 0.6 | 0.78 | 0.90 | 0.19 | 0.19 | 0.01 | 0.01 |
| March. | 29.966 | 30.421 | 29.182 | 47.5 | 60.8 | 32.4 | 10.5 | 44.2 | 47.5 | 40.4 | 0.77 | 2.9 | 0.9 | 1.32 | 1.32 | 0.38 | 0.38 | 0.02 | 0.02 |
| April | 29.736 | 30.329 | 29.234 | 47.2 | 71.6 | 33.0 | 13.1 | 43.9 | 47.2 | 40.2 | 0.74 | 2.9 | 0.9 | 2.20 | 2.20 | 0.45 | 0.48 | 0.03 | 0.03 |
| May | 29.910 | 30.300 | 29.701 | 53.2 | 71.4 | 41.0 | 14.7 | 50.8 | 53.2 | 46.8 | 0.79 | 3.6 | 1.0 | 2.19 | 2.29 | 0.72 | 0.76 | 0.01 | 0.01 |
| June | 29.890 | 30.300 | 29.636 | 62.6 | 78.4 | 49.9 | 14.8 | 57.5 | 62.6 | 53.4 | 0.73 | 4.5 | 1.7 | 1.96 | 2.06 | 0.26 | 0.27 | 0.01 | 0.01 |
| July | 30.071 | 30.410 | 29.842 | 68.5 | 87.5 | 54.9 | 15.3 | 62.6 | 68.5 | 58.0 | 0.68 | 5.3 | 2.3 | 2.43 | 2.49 | 0.80 | 0.82 | 0.04 | 0.04 |
| August | 29.937 | 30.392 | 29.634 | 63.5 | 83.8 | 50.0 | 13.9 | 59.6 | 63.5 | 56.3 | 0.78 | 5.0 | 1.5 | 1.89 | 2.04 | 0.35 | 0.41 | 0.01 | 0.01 |
| September | 29.792 | 30.316 | 29.446 | 58.1 | 74.5 | 47.9 | 11.7 | 54.3 | 58.1 | 50.9 | 0.77 | 4.2 | 1.2 | 3.47 | 3.64 | 1.29 | 1.34 | 0.01 | 0.01 |
Barometer.—The highest readings were on October 30, November 1, December 9, January 10, February 23, March 9, April 1, May 9, June 27,
July 5, August 22, September 12. The lowest readings were on October 7, November 27, December 27, January 31, February 7, March 29,
April 15, May 30, June 2, July 18, August 30, September 21.
Temperature.—The highest were October 3, November 26, December 22, January 18, February 16, March 5, April 6, May 31, June 26, July 13,
August 25, September 25. The lowest were October 30, November 24, December 7, January 8, February 4, March 31, April 1, May 5,
June 21, July 1, August 31, September 14.
Rain.—The greatest fall on October 18, November 29, December 20, January 31, February 5, March 31, April 25, May 21, June 29, July 21,
August 26, September 27. The least fall on October 13, November 6, December 23, January 8, February 16, March 9, April 4, May 19,
June 11, July 25, August 2, September 15.
Electricity.—Positive generally throughout the year. WILLIAM HAYWOOD.