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)	3.31	3.11	2.69	2.19	1.61	1.31	1.11	1.19	1	1.11	1.39	1	1	0.69	1.5	4	3.89	3.61	3	2.61	2.19	1.31	0.5	0.69
Wind gust (m/s)	7.53	7.03	5.81	4.42	2.11	1.33	1.11	1.22	1.5	1.39	1.89	1	6	1.53	2.39	5.31	5.33	5.11	4.19	3.19	2.72	1.42	1	1.22
Wind direction (°)	SW 220°	SW 230°	SW 236°	WSW 238°	WSW 241°	WSW 254°	W 260°	W 277°	WNW 296°	NW 309°	NW 316°	NNE 14°	NNE 33°	ENE 70°	NNE 22°	NE 42°	ENE 59°	ENE 62°	ENE 61°	NE 50°	NE 54°	NE 54°	SE 129°	WNW 294°

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 (%)	77	78	80	82	84	85	86	86	80	73	67	71	72	71	70	79	82	87	92	93	94	95	94	94

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	769	769	769	769	769	769	769	769	769	768	768	767	767	767	766	766	766	766	766	765	765

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	0.5	5	5	5	5	5	5	4	4	4	4	0	0	0	0	0

Air quality & pollen

Air quality is available for the first three days only.

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Thu, Sep 17, 2026

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Boston 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 →