5-day weather forecast Boston 25-05-2026

Weather forecast Boston tomorrow 25.05.2026: sunny, temperature from 13 °C to 19 °C.

Precipitation probability 100%. Wind up to 3.5 m/s (gusts 5.5 m/s). Air humidity 80–100%, atmospheric pressure 761–768 mm Hg, UV index up to 2.8.

Sunrise 05:14
Sunset 20:07

First Quarter65% illuminated
Moonrise 13:27 · Moonset 01:48

Chart

Table

← Sun, May 24

Mon, May 25, 2026

Tue, May 26 →

Forecast from 13 °C to 19 °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)	13	13	13	13	13	13	14	14	14	15	15	15	15	15	16	17	18	19	18	17	17	16	15	15
Precipitation (mm/hr)	0.45	0.36	0.16	0.33	0.48	0.03	0.21	1.03	1.95	2.33	1.29	1.09	0.1	0.01	0.01	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 (%)	100	100	100	100	100	100	100	100	100	100	100	100	100	100	94	92	48	21	10	11	9	13	8	8
Rain chance (%)	100	100	100	100	100	76	100	100	100	100	100	100	100	82	62	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)	3.5	2.81	2.5	2.11	0.81	0.39	0.89	1.11	1.19	1.69	1.61	1.89	2.69	1.89	2.81	3.11	2.81	2.81	2.69	2.19	1.81	1.5	1.5	1.31
Wind gust (m/s)	5.5	4.5	4.06	3.53	1.39	0.67	1.5	1.75	1.89	2.58	2.53	3.03	4.19	2.89	4.11	4.28	3.94	4.17	4.44	4.19	3.78	3.14	3.14	2.72
Wind direction (°)	ESE 102°	ESE 112°	ESE 112°	ESE 120°	S 174°	SW 216°	WSW 241°	SW 231°	SW 233°	SW 220°	SW 226°	WSW 244°	WNW 283°	W 279°	W 271°	W 270°	W 262°	WSW 254°	WSW 251°	WSW 247°	WSW 257°	WNW 293°	NW 313°	NW 320°

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 (%)	98	98	98	98	99	99	99	99	99	100	99	99	99	98	97	91	84	80	80	85	91	93	93	93

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)	768	767	767	766	765	765	764	764	764	763	763	762	763	762	762	762	762	761	761	761	762	763	763	763

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	0.2	0.3	0.3	0.4	0.4	1	1.6	2.8	2.2	1.3	0.5	0.2	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)	4.9	4.8	4.8	5.5	6.7	7.8	6.6	5.5	5.4	5.6	5.3	4.8	4	4.1	5.4	7.1	13.6	17.7	18	17.3	16.3	15.7	14.8	13.7
PM10 (µg/m³)	6.1	5.7	5.5	6.1	7.2	8.3	6.9	5.5	5.5	5.7	5.4	4.8	4.1	4.2	5.4	7.2	13.7	17.8	18.1	17.4	16.6	15.9	15	14.1
Ozone (O₃) (µg/m³)	70	65	58	51	44	38	33	32	37	46	53	59	64	63	51	32	17	10	6	4	2	1	1	3
NO₂ (µg/m³)	8.6	10.6	14.9	20.3	23.9	24.2	22.6	20.6	18.5	16	13.7	10.4	7.4	8.8	18.4	32.5	43.8	49.5	52.5	54.1	54.8	54.2	52.4	49.2
SO₂ (µg/m³)	1.6	1.7	1.8	1.9	2	1.9	1.7	1.6	1.6	1.7	1.7	1.6	1.5	1.5	1.7	1.9	2.1	2.2	2.3	2.3	2.2	2	1.9	1.8
CO (µg/m³)	136.9	144.9	150.9	155.9	157.9	153.9	146.9	140.9	137.9	135.9	135.9	128.9	123.9	145.9	222.9	326.9	397.9	405.9	379.9	348.9	318.9	283.9	253.9	231.9

← Sun, May 24

Mon, May 25, 2026

Tue, May 26 →

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.

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