5-day weather forecast Boston 26-05-2026

Weather forecast Boston Tuesday, May 26 26.05.2026: sunny, temperature from 12 °C to 24 °C.

No precipitation expected. Wind up to 4.5 m/s (gusts 8.25 m/s). Air humidity 45–92%, atmospheric pressure 760–764 mm Hg, UV index up to 7.8.

Sunrise 05:14
Sunset 20:07

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

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Table

← Mon, May 25

Tue, May 26, 2026

Wed, May 27 →

Forecast from 12 °C to 24 °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	14	13	13	12	12	13	14	15	17	18	20	21	22	23	24	24	23	22	21	20	19	18	18
Precipitation (mm/hr)	0	0	0	0	0	0	0	0	0	0	0	0	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 (%)	9	6	87	56	65	7	17	21	19	99	3	0	0	0	0	4	24	23	21	17	11	3	2	2
Rain chance (%)	0	0	0	0	0	0	0	0	0	0	0	0	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)	1.89	1.81	2	2	2.19	2.11	1.89	1.61	1.11	0.89	1.19	1.31	1.5	1.11	1.31	1.11	1.5	2	2.89	3.81	4.11	4.5	4.31	4.11
Wind gust (m/s)	4	3.78	4.19	4.19	4.5	4.31	3.61	2.39	1.39	1.08	1.39	1.5	1.72	1.28	1.5	1.36	2.03	2.92	4.78	6.92	7.92	8.25	8.11	8
Wind direction (°)	NNW 336°	NW 325°	NNW 327°	NNW 336°	NNW 341°	N 352°	N 359°	NNE 14°	NE 54°	ESE 115°	SE 129°	SSE 147°	SSE 151°	SSE 150°	SSE 158°	S 174°	S 170°	S 189°	S 190°	SSW 192°	SSW 207°	SW 217°	SW 228°	SW 233°

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 (%)	92	92	90	90	90	91	91	86	81	75	70	63	56	51	47	45	45	46	52	65	70	71	73	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)	763	764	764	763	764	764	764	764	764	764	764	764	764	763	762	761	761	761	760	760	761	761	761	761

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	0.1	0.5	1.4	2.3	3.7	5.5	7.4	7.8	7	5.7	3.9	2.1	0.9	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)	12.6	11.5	10.9	10.9	11.9	10.2	7.3	7.2	7.3	7.2	6.9	6.5	6.3	6.1	7.1	8.8	10.4	10.7	10.8	10.7	10.5	10	9.5	9.2
PM10 (µg/m³)	12.9	11.9	11.1	11.1	12.1	10.4	7.6	7.7	7.9	7.8	7.6	7.3	7	6.8	7.6	9.2	10.7	11	11.1	11.1	10.8	10.4	10	9.6
Ozone (O₃) (µg/m³)	7	11	14	18	29	53	84	107	117	120	120	119	116	109	96	80	67	59	55	53	54	57	60	60
NO₂ (µg/m³)	44.8	40	34.9	29.3	23.6	17.2	10.6	5.7	3.7	3.4	3.5	2.8	2.5	4.4	10.6	19.1	25.3	27.4	27.1	25.6	22.3	17.7	14.1	12.7
SO₂ (µg/m³)	1.8	1.8	1.8	1.8	1.8	1.8	1.7	1.7	1.6	1.6	1.5	1.4	1.4	1.4	1.4	1.5	1.6	1.6	1.7	1.7	1.7	1.6	1.6	1.6
CO (µg/m³)	215.9	209.9	221.9	243.9	251.9	229.9	192.9	163.9	150.9	144.9	142.9	142.9	146.9	157.9	180.9	210.9	230.9	233.9	227.9	218.9	206.9	191.9	179.9	173.9

← Mon, May 25

Tue, May 26, 2026

Wed, May 27 →

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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