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)	8.19	7.39	5.89	4.81	3.89	3.69	3.81	4.61	4.89	4.19	3.39	2.19	0.69	3.11	6.39	7.19	6.5	6.81	6.11	5.89	6	6.81	7	7.39
Wind gust (m/s)	11.72	10.61	8.75	7.61	6.64	6.39	6.39	6.69	6.67	5.53	4.47	2.94	0.92	3.86	7.86	9.97	9.5	9.92	9.47	9.06	9.22	10.08	10.03	11.5
Wind direction (°)	SSW 194°	SSW 196°	SSW 203°	SW 216°	SW 235°	W 268°	W 280°	W 276°	W 281°	W 279°	WNW 286°	WNW 297°	NE 53°	ESE 105°	ESE 119°	ESE 119°	SE 137°	SE 131°	SE 131°	SE 143°	SSE 157°	SSE 163°	S 188°	S 190°

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	75	72	68	63	62	61	56	51	49	47	45	41	43	49	60	65	66	68	68	68	70	74	75

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)	755	755	755	755	755	755	756	757	757	758	757	756	755	755	755	754	754	755	755	755	757	757	758	758

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	0.2	1	3	5.8	8.9	11	11.1	9	4.6	1.6	0.6	0.1	0	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)	18.9	19.2	19.3	18.3	17.3	16.2	15.4	14.9	12.5	11.2	12.2	13.8	15.9	19.8	20.4	19.4	18.6	19.1	20.8	22.4	22.7	20.5	18.1	17.6
PM10 (µg/m³)	26	25.2	25.3	23.6	21.7	19.6	17.9	16.9	14.6	15.1	18.9	21.9	24.6	30.9	31.7	30.5	29.5	29.6	30.6	31	30.2	27.6	23.7	22.3
Ozone (O₃) (µg/m³)	68	61	54	47	40	36	34	36	43	61	86	107	121	132	136	130	118	109	110	115	114	101	83	67
NO₂ (µg/m³)	11	13.5	15.5	16.5	17	17.1	17	16.5	15.3	12.7	9.4	6.7	4.9	3.8	3.2	3.4	4.3	5.4	6.5	7.9	9.7	12.4	15.5	17.6
SO₂ (µg/m³)	10	12.5	14.2	14.1	13.2	12.6	12.7	13.2	13.6	14.3	14.9	14.5	12.1	8.7	6.1	5.1	5	5.4	6.5	8	9.2	9.5	9.3	9.3
CO (µg/m³)	254	249	243	230	216	228	301	400	447	390	281	199	176	179	193	222	261	282	263	225	203	220	253	268

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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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5-day weather forecast Chennai 17-08-2026

Forecast from 29 °C to 34 °C and precipitation

Cloud cover and precipitation probability

Wind speed and direction