5-day weather forecast Prague 21-07-2026

Weather forecast Prague Tuesday, July 21 21.07.2026: sunny, temperature from 10 °C to 21 °C.

Precipitation probability 12%. Wind up to 6.19 m/s (gusts 7.14 m/s). Air humidity 38–82%, atmospheric pressure 766–767 mm Hg, UV index up to 6.

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ModerateJul 18, 10:45 AM — Jul 19, 03:59 PMTranslate with Google

Moderate Thunderstorm Impact

Risk of severe thunderstorms. Possible local property damage and complications, especially in the energy industry and transport. Potential for local flooding, especially of low-lying areas. Local wind damage to roofs, fences, soft shelters and trees. Local power outages. Some travel delays. Driving conditions difficult. Possible crop damage from small hail. Risk of fire caused by lightning strike. Risk of injury from flying or falling objects, and lightning strikes.

Beware of lightning strikes and flying or falling objects (especially branches). Seek shelter in a building equipped with lightning protection. Outdoors, take cover in dense forest or low vegetation; avoid water bodies, hilltops, metal structures, isolated trees, and rock overhangs. When driving reduce speed. Observe weather warnings, weather radar (www.chmi.cz or mobile apps) and local flood risk https://produkty.chmi.cz/ffi.

Sunrise 05:16
Sunset 21:00

First Quarter53% illuminated
Moonrise 14:12 · Moonset 23:38

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← Mon, Jul 20

Tue, Jul 21, 2026

Wed, Jul 22 →

Forecast from 10 °C to 21 °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)	12	11	11	10	10	10	10	13	15	17	18	19	21	21	21	20	20	20	19	19	18	16	14	14
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 (%)	14	10	17	13	15	22	17	14	16	13	29	49	46	56	45	49	46	42	46	31	25	14	11	10
Rain chance (%)	9	9	11	11	11	12	11	7	5	4	3	4	3	4	3	4	4	4	4	4	3	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)	2.31	2.31	2.39	2.39	2.39	2.5	2.61	3	4.11	4.89	5.31	5.5	6	6.19	6.11	5.81	5.31	5.39	4.69	3.81	3.39	2.69	2.69	2.89
Wind gust (m/s)	4.75	4.83	5.03	5.03	5.03	5.25	5.42	4.53	4.89	5.64	6.11	6.33	6.89	7.14	7.03	6.94	6.56	6.67	6.06	5.28	5.28	5.14	5.67	6.08
Wind direction (°)	W 278°	W 273°	W 262°	WSW 252°	WSW 246°	WSW 248°	WSW 252°	W 264°	WNW 286°	WNW 300°	NW 310°	NW 313°	NW 315°	NW 318°	NW 323°	NNW 327°	NNW 330°	NW 324°	NW 317°	WNW 299°	WNW 298°	WNW 293°	W 260°	W 266°

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 (%)	76	78	80	81	82	82	80	72	64	57	49	44	40	38	39	43	44	45	47	49	50	53	59	60

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)	767	767	767	767	767	767	767	767	767	767	767	767	767	766	766	767	767	767	767	767	767	767	767	767

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	0.4	1.1	2.2	3.6	5.1	6	5	4.3	2.3	1.5	1.1	0.6	0.2	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)	4.4	4.9	5	5	4.9	4.9	5	4.8	5	4.6	4	3.8	3.7	3.8	3.9	3.8	3.6	3.7	3.7	3.7	3.8	4.8	6.2	7.5
PM10 (µg/m³)	7	6.9	6.7	6.2	6.2	6.3	6.4	6.2	6.5	6	5.4	5.1	5.1	5.2	5.4	5.1	4.9	4.7	4.6	4.5	4.5	5.4	6.8	8.3
Ozone (O₃) (µg/m³)	55	55.5	55	54	52	52	54	58	63	69	76	81	84	86	88	90	91	92	92	91	88	80	70	61
NO₂ (µg/m³)	7	7.2	8.3	9.6	9.6	9.2	8.4	7.2	6	4.7	3.3	2.3	1.8	1.7	1.7	1.7	1.8	2.1	2.4	2.9	4	6.4	9.6	12.1
SO₂ (µg/m³)	1.3	1.5	2	2.4	2.5	2.5	2.6	2.7	2.6	2.2	1.6	1.2	1	1	1	0.9	0.8	0.8	0.8	0.8	0.9	1.3	1.7	2.1
CO (µg/m³)	125.8	120	117.8	114	112	110	109	108	107	105	103	101	99	97	96	95	95	96	97	99	103	113	125	132