5-day weather forecast Toronto 18-05-2026

Weather forecast Toronto Monday, May 18 18.05.2026: sunny, temperature from 12 °C to 25 °C.

Precipitation probability 77%. Wind up to 7.11 m/s (gusts 14.67 m/s). Air humidity 54–98%, atmospheric pressure 761–765 mm Hg, UV index up to 8.

Sunrise 05:50
Sunset 20:39

Waxing Crescent2% illuminated
Moonrise 06:50 · Moonset 23:36

Chart

Table

← Sun, May 17

Mon, May 18, 2026

Tue, May 19 →

Forecast from 12 °C to 25 °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)	14	13	13	12	12	12	12	12	13	15	17	19	21	23	24	24	25	24	24	23	22	21	20	20
Precipitation (mm/hr)	0	0.01	0	0	0.01	0.01	0.01	0	0.01	0	0	0.01	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 (%)	27	57	35	60	90	100	100	100	100	98	47	80	17	5	2	4	6	10	7	0	0	3	22	28
Rain chance (%)	0	77	0	0	64	76	73	0	66	0	0	71	0	0	0	0	0	0	0	0	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)	2.11	2	2.31	1.31	1.5	1.61	1.81	1.89	1.69	1.61	2.39	2.89	4.31	5	6.31	7	7.11	6.89	6.39	5.69	5.61	5.19	4.39	4.11
Wind gust (m/s)	4.42	4.19	4.83	2.72	3.14	3.36	3.78	4	3.53	3.06	4.33	5.31	8.33	10.03	12.61	14.28	14.67	14.47	13.44	11.97	11.75	10.92	9.25	8.61
Wind direction (°)	ESE 102°	ENE 76°	ESE 104°	ESE 113°	ESE 104°	E 98°	E 87°	E 101°	SE 132°	SSE 167°	S 188°	S 191°	SSW 194°	SSW 206°	SSW 210°	SSW 209°	SW 219°	SSW 212°	SW 217°	SW 221°	SW 221°	SW 221°	SSW 213°	SSW 210°

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 (%)	81	84	87	92	96	97	98	97	96	94	87	77	71	64	59	56	54	56	59	63	67	70	72	74

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)	765	765	764	764	764	764	764	764	764	764	764	764	764	763	763	762	762	761	761	761	762	762	762	762

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	0.2	0.6	1.3	2.5	4.9	6.9	7.9	8	6.9	5.1	3.1	1.6	0.6	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)	24.8	24.8	23.3	20.7	18.3	14.3	11.6	11.5	11.3	10.7	10.3	10	10.3	10.5	11.9	12.3	12.3	12.8	13.5	13.3	12.3	11.9	11	9.7
PM10 (µg/m³)	25	25.1	23.5	20.9	18.5	14.6	11.9	11.8	11.6	11	10.7	10.5	11	11.3	12.5	12.9	13	13.6	14.4	14	12.7	12.1	11.3	10
Ozone (O₃) (µg/m³)	42	36	34	35	42	60	83	105	122	137	147	150	147	140	127	110	94	80	66	57	55	57	59	60
NO₂ (µg/m³)	25.8	26.5	25.8	24.7	22.8	19.7	15.8	12.4	9.8	7.7	6.5	5.9	6.1	8.3	13.9	21.6	28.2	33.3	37.4	38.7	35.7	30	24.8	20.7
SO₂ (µg/m³)	6.8	7.1	7.4	7.8	8	7.8	7.4	6.9	6.4	5.8	5.3	5	4.8	4.9	5.6	6.6	7.5	8.4	9.2	9.4	8.7	7.4	6.4	5.8
CO (µg/m³)	144.9	141.9	147.9	161.9	178.9	200.9	225.9	246.9	260.9	270.9	279.9	285.9	290.9	299.9	320.9	346.9	351.9	352.4	348.9	340.9	326.9	304.9	283.9	261.9

← Sun, May 17

Mon, May 18, 2026

Tue, May 19 →

Toronto 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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