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 1861
[Report of the Medical Officer of Health for London, City of ]
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No. VI—Meteorology of the City of London for each Month in the Year ending September 1862, from Observations made at the Engineer's Office, Guildhall, under the direction of Mr. Haywood.
| Months. 1861-62. | Brometer. | Dry Thermometer. | Wet thermometer. | Rain Gauses. | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mean Pressure. | Highest Pressure. | Lowest Pressure. | Mean Tempreture. | Highest Tempreture. | Lowest Tempreture. | Mean Daily Range. | Mean Tempreture. | Dew Point | Degree of Humidity. | weight of vapour in cubic food or 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 | 29.924 | 30.328 | 29.444 | 55.8 | 67.0 | 44.0 | 9.1 | 54.0 | 55.8 | 52.3 | 0.88 | 4.4 | 0.6 | 0.68 | 0.86 | 0.28 | 0.35 | 0.01 | 0.01 |
| November | 29.658 | 30.582 | 29.244 | 43.8 | 56.0 | 29.8 | 9 .0 | 41.7 | 43.8 | 37.8 | 0.76 | 2.6 | 0.8 | 4.09 | 4.70 | 1.25 | 1.39 | 0 .01 | 0.01 |
| December | 30.081 | 30.582 | 29.292 | 43.2 | 55.0 | 25.2 | 7.0 | 41.8 | 43.2 | 39.5 | 0.85 | 2.8 | 0.5 | 1 .24 | 1.37 | 0.41 | 0.45 | 0 .01 | 0.01 |
| J anuary | 29.814 | 30.460 | 29.462 | 40.7 | 54.6 | 25.8 | 7.2 | 39 .3 | 40.7 | 37.3 | 0.87 | 2.6 | 0 4 | 1.48 | 1.73 | 0.33 | 0.39 | 0.01 | 0.01 |
| February | 30.001 | 30.660 | 29.352 | 42.8 | 58.7 | 28.7 | 6.7 | 41.5 | 42.8 | 39.5 | 0.87 | 2.8 | 0.4 | 0.40 | 0.46 | 0.11 | 0.13 | 0.0 | 0 .01 |
| March | 29.595 | 30.202 | 29.208 | 44.0 | 58.2 | 28.3 | 8.9 | 43.7 | 44.0 | 41.4 | 0.90 | 2.1 | 0.3 | 2.75 | 3.28 | 0.69 | 0.81 | 0.01 | 0.01 |
| April | 29.950 | 30.328 | 29.630 | 48.8 | 68.7 | 32.7 | 10.1 | 45.8 | 48.8 | 42.6 | 0.80 | 3.2 | 0.8 | 2.18 | 2. 53 | 0.65 | 0.65 | 0.00 | 0.01 |
| May | 29.837 | 30.256 | 29.492 | 55.1 | 74.6 | 43. 3 | 12.1 | 52.2 | 55.1 | 49.4 | 0.82 | 3 9 | 0.9 | 2.79 | 2.92 | 0.66 | 0.68 | 0.01 | 0 .01 |
| June | 29.812 | 30.218 | 29.286 | 56.6 | 71.3 | 49.4 | 12.7 | 55.5 | 56.6 | 54.5 | 0.93 | 4.7 | 0.3 | 2.22 | 2.37 | 0.44 | 0.54 | 0.01 | 0.01 |
| July | 29.883 | 30.262 | 29.486 | 58.3 | 76.2 | 49.6 | 12.5 | 55.0 | 58.3 | 52.0 | 0 80 | 4.3 | 0.9 | 2.05 | 2.17 | 0.39 | 0.39 | 0.01 | 0.01 |
| August | 29.871 | 30.306 | 29.368 | 59.9 | 76.0 | 52.2 | 11.9 | 55.5 | 59.9 | 51.6 | 0.75 | 4.3 | 1.5 | 3.04 | 2.63 | 0.67 | 0.67 | 0.04 | 0.04 |
| September | 29.960 | 30.442 | 29.650 | 58.0 | 70.5 | 48.9 | 10.8 | 54.8 | 58.0 | 51.9 | 0.80 | 4.3 | 1.1 | 1.53 | 1.38 | 0.67 | 0.46 | 0 .01 | 0.01 |
Barometer.—The highest readings were on October 17, November 19, December 27, January 2, February 8, March 14, April 29, May 2, June 4,
July 21, August 25, September 18. The lowest were on October 11, November 2, December 7, January 22, February 18, March 28, April 22,
May 30, June 12, July 12, August 7, September 3.
Temperature.—The highest were on October 14, November 26, December 1, January 31, February 19, March 8, April 26, May 6, June 2, July 27,
August 1, September 20. The lowest were on October 29, November 18, December 30, January 20, February 10, March 4, April 14, May 3,
June 16, July 4, August 30, September 11.
Rain.—The greatest fall on October 23, November 14, December 7, January 31, February 20, March 21, April 9, May 9, June 13, July 17,
August 18, September 30. The least fall on October 1, November 21, December 19, January 13, February 14, March 20, April 24, May 17,
June 4, July 5, August 22, September 22.
Electricity.—Positive generally throughout the year. WILLIAM HAYWOOD.