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)	1.31	1.19	1.39	1	1.31	1.19	1.39	1.89	2.19	2.69	3.31	1.69	1.31	2.11	1.89	1.11	0.39	0.61	0.89	0.61	0.81	0.89	1.69	1.81
Wind gust (m/s)	2.61	2.03	1.53	1.11	2.33	2.22	2.11	3.53	4.22	4.31	5.42	3.11	1.92	2.5	2.53	1.39	0.83	1.42	2	0.72	0.83	1.31	3.11	3.5
Wind direction (°)	NNE 19°	NNE 23°	N 1°	NNE 12°	NNE 21°	NE 36°	N 356°	N 8°	N 5°	N 358°	N 353°	NNE 22°	NNE 17°	N 353°	N 357°	NNE 21°	N 351°	WNW 298°	NW 312°	E 87°	E 98°	NNE 24°	N 351°	NNW 336°

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 (%)	50	51	54	56	54	54	59	74	77	72	73	77	70	67	66	62	59	58	59	65	67	69	69	62

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)	769	769	769	768	767	767	767	767	767	767	767	767	767	767	767	767	766	766	766	766	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	0	0	4	4	4	4	4	4	4	5	6	6	5	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)	6.1	5.9	5.7	5.8	6.4	6.8	7.3	8.1	8.4	10.4	10.7	13.1	15.5	16.5	11.8	7.9	4.1	3.2	3.1	4	4.6	4.7	4.6	4.4
PM10 (µg/m³)	6.2	6	5.7	5.9	6.5	6.9	7.4	8.3	8.6	10.6	10.9	13.2	15.6	16.5	11.8	8	4.1	3.2	3.1	4	4.6	4.8	4.7	4.6
Ozone (O₃) (µg/m³)	36	37	36	33	28	25	25	27	29	30	32	36	46	58	68	73	75	74	69	62	57	58	62	64
NO₂ (µg/m³)	32.8	29.8	27.9	27.9	29.2	30.7	32.5	34.6	36.4	38.1	39.5	39.5	37.5	34.2	30.1	24.3	17.8	14.2	16.3	21.3	24.3	23	19.9	17.1
SO₂ (µg/m³)	8.5	7.8	7.3	6.8	6.4	6.7	8.1	10.2	11.9	13.1	13.9	14.1	13.5	12.3	10.8	8.6	6.1	4.4	4.3	5.1	5.6	5.6	5.3	5
CO (µg/m³)	390	374	349	304	250	217	223	251	277	298	317	322	297	258	242	259	299	372	527	714	793	661	421	235

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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 Toronto Sep 17, 2026

Forecast from 16 °C to 21 °C and precipitation

Cloud cover and precipitation probability

Wind speed and direction