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 1862
[Report of the Medical Officer of Health for London, City of ]
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No. X—Meteorology of the City of London for each Month in the Year ending in September 1863, from Observations made at the Engineer's Office, under the direction of Mr. Haywood.
| MONTHS. 1862.63. | Barometer. | Dry Thermometer. | Wet Thermometer or Hygrometer. | Rain Gauges. | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mean Pressure. | Highest Pressure. | Lowest Pressure. | Mean Temperature. | Highest Temperature. | Lowest Temperature. | Mean Daily Kange. | Mean Temperature. | Dew Point. | Degree of Humidity. | Weight of vapour in cubic foot, of air. | Vapour required to saturate ditto. | Total Fall. | GreatestF1 all. | Lowest Fall. | |||||
| Wet Bulb. | Drv Bulb. | On Roof. | On Grnd. | On Koof. | 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 | 29.832 | 30.486 | 29.274 | 53.5 | 69.3 | 36.1 | 9.6 | 51.2 | 53.5 | 48.1 | 80 | 3.8 | 0.9 | 3. 25 | 3.43 | 0.76 | 0.79 | 0.01 | 0.01 |
| November | 29.915 | 30.398 | 29 390 | 41.8 | 56.3 | 28.7 | 7.4 | 39.9 | 41.8 | 37.5 | 85 | 2.6 | 0.5 | 0.90 | 0.86 | 0.37 | 0.38 | 0.01 | 0.01 |
| December | 29.991 | 30.436 | 29.480 | 45.6 | 58.9 | 36.6 | 8.2 | 44.0 | 45.6 | 41.7 | 86 | 3.1 | 0.5 | 1.45 | 1.48 | 0.37 | 0.39 | 0.01 | 0.01 |
| J anuary | 29.731 | 30.586 | 29. 062 | 44.1 | 53.8 | 34.4 | 7.5 : | 42.2 | 44.1 | 39.6 | 84 | 2.8 | 0.5 | 2.22 | 2.30 | 0.67 | 0.70 | 0.01 | 0.01 |
| February | 30.265 | 30.690 | 29.794 | 44-1 | 53.2 | 32.2 | 9.2 | 42.4 | 44.1 | 40.7 | 88 | 2.9 | 0.4 | 0.66 | 0.68 | 0.15 | 0.18 | 0.01 | 0.01 |
| March.. | 29.852 | 30 574 | 29182 | 45.6 | 61.0 | 34.4 | 11.7 | 42.2 | 45.6 | 38.0 | 75 | 2.7 | 0.8 ; | 0.86 | 0 71 | 0.29 | 0.37 | 0.01 | 0.01 |
| April | 29.908 | 30.434 | 29.496 | 49.7 | 63.0 | 36. 3 | 12.2 | 46.2 | 49.7 | 42.3 | 76 | 3.1 | 1.0 | 0.23 | 0.29 | 0.06 | 0.09 | 0.01 | 0.01 |
| Mav | 29.968 | 30.400 | 29.654 | 52.2 | 71.4 | 37.3 | 13.5 | 49.2 | 52.2 | 45.9 | 80 | 3.5 | 0.9 | 1.91 | 1.42 | 0.42 | 0.24 | 0.03 | 0 .03. |
| June | 29.829 | 30.300 | 29.500 | 57.9 | 75.0 | 48.5 | 12.3 | 531 | 57.9 | 48.9 | 73 | 3.9 | 1.4 | — | 3.79 | -_ | 1.28 | — | U.01 |
| July | 30.043 | 30.502 | 29.270 | 61.8 | 78.7 | 491 | 14.6 | 55.9 | 61.8 | 50.8 | 67 | 4.1 | 2.1 | — | 1.00 | -_ | 0.63 | — | 0.01 |
| August | 29.847 | 30194 | 29.422 | 62.0 | 77.5 | 50.6 | 12.8 | 571 | 62.0 | 52.7 | 72 | 4.4 | 1.8 | — | 1.99 | — | 0.55 | — | 0.01 |
| September | 29.770 | 30.372 | 29.942 | 54.4 | 70.8 | 42.9 | 11.9 | 50.9 | 54.4 | 47.7 | 77 | 3. | 1.0 | 3.01 | 3.16 | 0.50 | 0.48 | 0.01 | 0.01 |
Barometer.—The highest readings were on October 4, November 17, December 27, January 28, February 13, March 25, April 24, May 8, June 1,
July 13, August 21, September 14. The lowest readings were on October 23, November 10, December 29, January 5, February 3, March 12,
April 7, May 13, June 12, July 1, August 27, September 22.
Temperature.—The highest were on October 3, November 4, December 5, January 29, February 27, March 3, April 16 and 25, May 29, June 3,
July 10, August 15, September 19. The lowest were on October 30, November 20, December 22, January 19, February 18, March 11 and 18,
April 1, May 1, June 1, July 20, August 22, September 30.
Rain.—The greatest fall on October 10, November 4, December 9, January 12, February 18, March 15, April 8, May 18, June 18, July 21, August 26,
September 9. The least fall on October 9, November 18, December 30, January 21, February 11, March 30, April 22, May 13, June 10,
July 19, August 6, September 1.
Electricity.—Positive generally throughout the year. "WILLIAM HAYWOOD.