5-day weather forecast London 21-07-2026

Weather forecast London Tuesday, July 21 21.07.2026: sunny, temperature from 14 °C to 27 °C.

Precipitation probability 10%. Wind up to 4.11 m/s (gusts 4.72 m/s). Air humidity 28–77%, atmospheric pressure 770–773 mm Hg, UV index up to 7.

Sunrise 05:08
Sunset 21:05

First Quarter53% illuminated
Moonrise 14:18 · Moonset 23:32

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Table

← Mon, Jul 20

Tue, Jul 21, 2026

Wed, Jul 22 →

Forecast from 14 °C to 27 °C and precipitation

Temperature & Precipitation
Time	00:00	01:00	02:00	03:00	04:00	05:00	06:00	07:00	08:00	09:00	10:00	11:00	12:00	13:00	14:00	15:00	16:00	17:00	18:00	19:00	20:00	21:00	22:00	23:00
Temperature (°C)	17	17	16	16	15	15	14	15	17	18	19	21	23	24	25	26	27	27	26	24	22	20	19	18
Precipitation (mm/hr)	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0

Cloud cover and precipitation probability

Cloud cover & Rain chance
Time	00:00	01:00	02:00	03:00	04:00	05:00	06:00	07:00	08:00	09:00	10:00	11:00	12:00	13:00	14:00	15:00	16:00	17:00	18:00	19:00	20:00	21:00	22:00	23:00
Cloud cover (%)	18	32	37	15	19	12	13	12	15	52	61	17	61	27	21	47	32	23	20	9	5	5	6	7
Rain chance (%)	7	9	10	8	9	9	9	7	6	7	7	2	5	2	2	3	2	1	1	1	2	3	4	4

Wind speed and direction

Wind & Wind gust
Time	00:00	01:00	02:00	03:00	04:00	05:00	06:00	07:00	08:00	09:00	10:00	11:00	12:00	13:00	14:00	15:00	16:00	17:00	18:00	19:00	20:00	21:00	22:00	23:00
Wind (m/s)	1.5	0.89	0.69	1.69	2.61	2.81	3.11	3.5	3.39	3.5	3.19	3	2.69	2.61	2.61	2.61	2.89	3.61	3.81	4.11	3.81	3.5	3.39	2.69
Wind gust (m/s)	2.06	1.25	0.97	2.42	3.64	3.86	4.22	4.33	3.92	4.03	3.67	3.44	3.11	3	3	3	3.33	4.14	4.36	4.72	4.72	4.61	4.61	3.75
Wind direction (°)	E 100°	ENE 75°	NE 37°	N 11°	NNE 16°	NNE 16°	NNE 17°	NNE 17°	NNE 15°	NNE 15°	NNE 18°	NNE 23°	NNE 30°	NNE 33°	NNE 32°	NNE 29°	NNE 14°	N 9°	NE 34°	ENE 73°	E 92°	ESE 102°	SE 124°	SE 139°

Air humidity

Humidity
Time	00:00	01:00	02:00	03:00	04:00	05:00	06:00	07:00	08:00	09:00	10:00	11:00	12:00	13:00	14:00	15:00	16:00	17:00	18:00	19:00	20:00	21:00	22:00	23:00
Humidity (%)	69	72	73	74	75	77	77	73	66	58	52	46	41	37	33	31	29	28	30	38	47	55	61	64

Atmospheric pressure

Pressure
Time	00:00	01:00	02:00	03:00	04:00	05:00	06:00	07:00	08:00	09:00	10:00	11:00	12:00	13:00	14:00	15:00	16:00	17:00	18:00	19:00	20:00	21:00	22:00	23:00
Pressure (mm Hg)	772	772	771	772	772	772	772	772	772	773	773	773	772	772	771	771	770	770	770	770	770	771	771	771

Ultraviolet index

UV Index
Time	00:00	01:00	02:00	03:00	04:00	05:00	06:00	07:00	08:00	09:00	10:00	11:00	12:00	13:00	14:00	15:00	16:00	17:00	18:00	19:00	20:00	21:00	22:00	23:00
UV Index	0	0	0	0	0	0	0.1	0.5	1.2	2.4	4	5.4	6.5	7	6.6	5.5	4	2.5	1.3	0.5	0.1	0	0	0

Air quality & pollen

Air quality
Time	00:00	01:00	02:00	03:00	04:00	05:00	06:00	07:00	08:00	09:00	10:00	11:00	12:00	13:00	14:00	15:00	16:00	17:00	18:00	19:00	20:00	21:00	22:00	23:00
PM2.5 (µg/m³)	9.7	12.3	15	15.8	17	18.1	18.6	16.9	16.2	13.9	12.6	12.3	12.9	13.6	13.5	13.4	13.3	13.3	13.3	13.3	13.2	14.3	14.9	14.7
PM10 (µg/m³)	14.6	18.3	21.7	22.6	24	25.1	25.3	23.5	22.6	19.2	17.3	16.6	16.9	17.5	17.2	16.9	16.8	16.8	16.7	16.7	16.5	17.5	18.4	18.7
Ozone (O₃) (µg/m³)	56	55.8	51	43	37	35	35	38	46	58	68	76	82	87	91	93	94	94	92	88	80	70	62	60
NO₂ (µg/m³)	17.4	16.9	17.4	21.3	23.9	24.4	23.6	21.5	17.3	11.8	7.4	5	3.6	2.8	2.3	2.4	2.7	3.1	3.9	5.4	8.4	12.2	15.1	16.2
SO₂ (µg/m³)	1.7	1.9	2.1	2.3	2.5	2.7	2.8	2.9	2.8	2.7	2.5	2.2	1.9	1.7	1.6	1.5	1.4	1.3	1.3	1.3	1.5	1.8	2.1	2.4
CO (µg/m³)	133.5	139.8	148	152	154	152	148	142	134	124	117	114	113	113	113	113	114	115	116	118	123	129	132	128

← Mon, Jul 20

Tue, Jul 21, 2026

Wed, Jul 22 →

London on the map

Data Sources & Methodology

Our weather forecasts are powered by a professional weather data provider that aggregates data from national weather services, satellite observations, radar networks, and over 80,000 weather stations worldwide. Forecast data is updated multiple times daily. We convert raw data into clear summaries — wind speed in m/s, pressure in mmHg — so you can plan your day with confidence.

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