5-day weather forecast Prague 21-05-2026

Weather forecast Prague Thursday, May 21 21.05.2026: partly cloudy, temperature from 9 °C to 19 °C.

Precipitation probability 100%. Wind up to 3.39 m/s (gusts 4.61 m/s). Air humidity 58–92%, atmospheric pressure 770–772 mm Hg, UV index up to 7.

Sunrise 05:08
Sunset 20:50

Waxing Crescent24% illuminated
Moonrise 09:34 · Moonset 01:15

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Table

← Wed, May 20

Thu, May 21, 2026

Fri, May 22 →

Forecast from 9 °C to 19 °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)	11	11	10	9	9	9	9	12	14	16	17	17	17	17	18	19	19	19	19	18	16	14	13	12
Precipitation (mm/hr)	0	0	0	0	0	0	0	0	0	0	0.21	0.28	0.29	0.41	0.2	0.23	0.03	0	0	0.01	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 (%)	69	46	49	47	81	37	28	42	24	39	71	84	72	56	82	70	100	46	46	86	19	40	42	27
Rain chance (%)	0	0	0	0	0	0	0	0	0	0	100	100	100	100	100	100	75	0	0	81	0	0	0	0

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)	2	1.89	2.19	2.11	2.19	2.19	2	2	2.39	3.19	3.39	3.19	2.89	3	3	3.19	3.31	2.5	2.5	2.5	1.89	1.61	1.39	1
Wind gust (m/s)	4.19	4	4.61	4.42	4.61	4.61	4.19	3.03	2.89	3.67	3.92	3.78	3.42	3.89	3.72	3.67	4.14	3.31	3.47	3.64	3.81	3.36	2.94	2.11
Wind direction (°)	WSW 256°	WSW 250°	WSW 252°	WSW 247°	WSW 249°	WSW 253°	WSW 253°	W 260°	W 273°	WNW 290°	WNW 297°	WNW 301°	WNW 300°	NW 308°	NW 316°	NNW 329°	NNW 344°	N 349°	NNW 346°	N 355°	N 349°	N 349°	NNW 343°	NW 321°

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 (%)	88	87	90	91	92	92	92	84	77	71	68	67	69	68	64	58	58	58	60	64	71	77	80	82

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)	770	770	770	770	770	770	771	771	771	771	771	770	770	770	770	770	770	770	770	770	770	771	772	772

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	0.3	0.4	1	3.4	2.8	4.6	7	6.4	4	4	5	5	4	5	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)	7.6	8.9	8.1	6.8	5.8	4.6	4.2	4	4	4.1	5	5	4.9	4.2	3.5	3.3	3.2	3.2	3.3	3.2	3.3	3.4	4.2	6.1
PM10 (µg/m³)	10.7	11.1	9.2	7.3	6.3	4.7	4.3	4.2	4.3	4.4	5.4	5.9	5.9	4.9	3.7	3.5	3.4	3.4	3.5	3.5	3.6	3.7	4.4	6.3
Ozone (O₃) (µg/m³)	60	58	49	44.5	38.8	33	32	33	34	36	42	55	71	84	91	95	98	102	106	107	105	100	94	84
NO₂ (µg/m³)	12.2	11.6	11	10.5	11.2	12.2	11.9	11.3	10.5	9.5	8.4	7	5.4	4.2	3.4	3	2.7	2.5	2.4	2.7	3.5	4.7	6.2	8.4
SO₂ (µg/m³)	2.9	2.7	2.2	2.3	2.3	2.3	2.3	2.3	2.3	2.3	2.4	2.6	2.8	2.9	2.8	2.5	2.3	2.2	2.2	2.3	2.4	2.5	2.7	3.1
CO (µg/m³)	207.9	192.9	188.9	183.4	176.4	168.9	159.9	153.9	153.9	155.9	156.9	151.9	144.9	138.9	134.9	132.9	130.9	129.9	128.9	129.9	130.9	132.9	138.9	153.9

← Wed, May 20

Thu, May 21, 2026

Fri, May 22 →

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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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