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)	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	11	11	10	10	10	10	10	10	10
Precipitation (mm/hr)	0.04	0	0.03	0.19	0.18	0.24	0.12	0.03	0.18	2.02	0.36	0.24	0.49	0.84	0.75	0.09	0.1	0.01	0.07	0	0.06	0.01	0	0.02

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 (%)	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	92	100	100	87
Rain chance (%)	36	32	35	48	47	51	44	36	48	83	58	51	65	73	71	43	44	35	41	33	37	29	29	29

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)	10.61	10.19	10.69	10.19	10.39	9.89	9.89	9.61	10.81	11.11	11.19	12	12.81	12.31	12.61	12.11	12.81	11.61	9.61	9.61	8.61	10.11	8.61	8.19
Wind gust (m/s)	15.31	15.33	16.42	15.42	16.53	15.5	15.44	15.11	16.11	17.31	17.33	18.31	19.39	18.81	19.33	17.81	18.92	16.42	13.11	13.72	13	12.61	12.83	12.11
Wind direction (°)	NW 318°	NW 317°	NW 310°	NW 318°	NW 310°	NW 310°	NW 316°	NW 315°	NW 325°	NW 320°	NW 321°	NW 322°	NW 321°	NW 321°	NW 311°	NW 311°	WNW 302°	WNW 297°	WNW 287°	W 277°	W 280°	W 277°	W 280°	WNW 283°

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 (%)	94	94	93	94	94	94	95	95	95	96	95	95	96	96	96	96	96	97	96	94	96	87	89	90

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

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	0.3	1.4	2.8	4.4	5.7	5.5	6.2	5.3	3.6	2.1	1	0.3	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)	5.4	5.8	5.9	5.7	5.4	5.6	5.2	5	4.8	4.6	4.4	4.3	4.4	4.6	5	5	4.8	4.6	4.6	4.8	5.6	6.8	7.1	6.6
PM10 (µg/m³)	5.4	5.9	5.9	5.7	5.4	5.6	5.3	5	4.8	4.6	4.4	4.3	4.4	4.6	5	5.1	4.9	4.6	4.7	4.9	5.7	6.9	7.2	6.7
Ozone (O₃) (µg/m³)	96	100	102	101	98	95	90	84	81	82	85	90	99	110	118	120	117	112	103	90	78	67	57	50
NO₂ (µg/m³)	8.7	7.8	7	6.3	5.7	5.7	6.7	8.2	9.2	9.1	8.4	7.6	6.5	5.3	4.5	4.1	4.1	5.1	7.6	11	14.1	16.6	18.6	19.6
SO₂ (µg/m³)	3	2.9	2.8	2.9	3.1	3.2	3	2.7	2.5	2.6	2.9	3.1	3.1	3.1	3.1	3.1	3.1	3.1	3.2	3.2	3.4	3.7	4	4.3
CO (µg/m³)	181	154	139	143	160	192	257	337	383	368	319	273	239	207	187	178	181	204	272	361	368	343	308.5	276

← Tue, Aug 18

Wed, Aug 19, 2026

Thu, Aug 20 →

Niagara Falls 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.

Learn more about our methodology →