5-day weather forecast Tehran 18-05-2026

Weather forecast Tehran Monday, May 18 18.05.2026: sunny, temperature from 15 °C to 23 °C.

Precipitation probability 81%. Wind up to 9.11 m/s (gusts 10.47 m/s). Air humidity 19–44%, atmospheric pressure 752–755 mm Hg, UV index up to 9.

Sunrise 05:58
Sunset 20:05

Waxing Crescent2% illuminated
Moonrise 06:47 · Moonset 22:26

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Table

← Sun, May 17

Mon, May 18, 2026

Tue, May 19 →

Forecast from 15 °C to 23 °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	16	16	16	15	15	16	17	17	18	19	20	21	22	23	23	23	19	18	19	19	19	19	19
Precipitation (mm/hr)	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0.01	0.43	0.04	0	0.08	0	0.01	0.03

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 (%)	8	8	6	5	4	4	4	3	5	6	6	5	4	3	2	2	73	76	81	5	74	6	73	88
Rain chance (%)	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	81	100	62	0	100	0	67	77

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)	6	6.31	5.89	6.11	5.39	5	5.39	5.89	6.39	6.81	6.81	5.89	6.19	6.81	7.39	7	8	9.11	4.69	4.61	4.61	4.31	3.19	2
Wind gust (m/s)	6.89	7.25	6.78	7.03	6.22	5.75	6.22	6.78	7.36	7.83	7.83	6.78	7.14	7.83	8.5	8.06	9.19	10.47	5.42	5.28	5.28	4.94	3.67	2.31
Wind direction (°)	WNW 282°	WNW 285°	WNW 292°	WNW 293°	WNW 298°	WNW 298°	WNW 292°	WNW 287°	W 279°	W 275°	W 276°	W 279°	WNW 285°	WNW 292°	WNW 292°	WNW 290°	W 278°	NW 309°	N 355°	NNW 342°	NW 310°	NW 325°	NNW 344°	N 357°

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 (%)	37	40	38	36	37	37	33	30	29	28	27	25	23	21	19	19	22	41	44	37	37	37	35	36

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)	754	754	754	754	754	754	755	755	755	754	754	754	753	752	752	752	752	754	754	753	754	754	753	753

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	0.5	1.6	3.4	5.6	7.5	8.8	9	7.9	5.9	3.7	1.8	0.6	0.1	0	0	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)	32.1	34	34.2	33.8	31.9	28.7	25	22.9	23.5	27.8	29.4	33	32.6	27.3	23	20.5	19.8	20	19.9	20.5	22	24.2	28.2	31.1
PM10 (µg/m³)	61.7	60.4	57.2	52.1	47	41.8	37	34	33.6	39.3	56.7	84	88.9	72.4	58.9	52.2	50.4	51.1	50.5	50	54.6	62.6	75.2	82.4
Ozone (O₃) (µg/m³)	26	17	11	9	10	15	19	19	19	26	47	76	99	113	121	126	128	127	123	114	102	88	73	56
NO₂ (µg/m³)	91.5	96.2	97.3	95.3	89.1	80	71.9	67.3	63.7	58.4	49.1	38	28.6	22	17.2	14.3	13.2	14.1	17.3	23.8	32.6	41.6	50.1	58.8
SO₂ (µg/m³)	40.3	40.4	38.7	36.8	34.9	32.9	32.4	35.3	39.6	40.9	36.3	28.6	21.9	17.4	13.8	11.3	10.1	10	10.3	10.7	11.7	13.6	17.2	21.8
CO (µg/m³)	258.9	271.9	314.9	332.9	270.9	182.9	174.9	343.9	591.9	736.9	670.9	500.9	360.9	302.9	274.9	261.9	251.9	255.9	293.9	403.9	547.9	631.9	561.9	430.9

← Sun, May 17

Mon, May 18, 2026

Tue, May 19 →

Tehran 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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