5-day weather forecast Boston 04-07-2026

Weather forecast Boston today 04.07.2026: sunny, temperature from 21 °C to 37 °C.

Precipitation probability 2%. Wind up to 4.39 m/s (gusts 5.39 m/s). Air humidity 34–77%, atmospheric pressure 757–761 mm Hg, UV index up to 8.8.

Sunrise 05:13
Sunset 20:24

Waning Gibbous70% illuminated
Moonrise 23:07 · Moonset 09:50

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Table

Sat, Jul 4, 2026

Sun, Jul 5 →

Forecast from 21 °C to 37 °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)	29	28	28	27	26	25	26	27	29	31	30	34	34	35	34	37	37	34	31	27	25	22	22	21
Precipitation (mm/hr)	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0.22	0.16	0.04	0.11	0.03	0.05

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 (%)	0	0	0	0	0	0	0	0	0	0	50	0	13	0	7	11	7	8	80	89	88	87	84	77
Rain chance (%)	2	3	3	4	4	4	5	3	2	1	1	1	1	1	1	3	1	1	18	23	18	28	20	18

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)	2.69	2.31	2.5	2.61	2.69	2.69	2.61	3.31	3.5	3.39	3.5	4.31	4.39	4.31	4.11	3.69	2.61	1.19	1.31	0.69	0.81	1.81	2	2
Wind gust (m/s)	4.92	4.36	4.89	5	5.22	5.39	5.08	4.97	4.58	4.14	4.08	4.94	5.06	4.94	4.72	4.75	3.69	1.83	1.97	1.47	1.67	3.78	4.19	4.19
Wind direction (°)	NW 308°	WNW 293°	W 280°	W 277°	W 273°	W 276°	WNW 285°	WNW 300°	NW 308°	NW 307°	WNW 297°	NW 306°	NW 305°	WNW 302°	WNW 298°	NW 314°	NNW 345°	NNW 346°	NNW 333°	NE 34°	NE 37°	N 358°	NNE 20°	N 1°

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 (%)	52	56	60	62	63	66	67	61	53	46	55	41	39	40	39	35	34	35	42	60	67	77	75	71

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)	758	758	758	758	758	758	758	758	758	758	758	758	758	758	757	757	758	758	758	758	758	759	760	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	0.2	0.7	1.6	3.4	5.5	7.5	8.6	8.8	7.8	5.8	3.9	2.2	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)	5.3	6	6.7	7.3	7.9	8.4	8.8	9.2	9.5	9.4	9.2	8.8	8.4	7.8	8.7	7.3	7	8.2	9.2	10	12.1	12.7	13.5	12.9
PM10 (µg/m³)	5.9	6.6	7.3	7.9	8.5	9	9.3	9.7	10.2	10.2	10.1	9.8	9.3	8.8	10.1	8.5	8.1	9.4	10	10.8	12.7	13.4	14	13.3
Ozone (O₃) (µg/m³)	97	99	100	100	99	100	102	105	109	114	120	123	121	116	111	108	105	100	93	84	76	68	61	56
NO₂ (µg/m³)	4.6	4.3	4.2	4.4	4.7	4.9	5.1	5.2	5	4.2	3.1	2.2	1.8	1.6	1.6	1.3	1.2	2.5	6.5	12	16.2	18.4	19.5	19
SO₂ (µg/m³)	0.9	0.9	1	1.1	1.1	1.2	1.3	1.3	1.3	1.2	1	0.8	0.7	0.6	0.5	0.5	0.5	0.5	0.6	0.7	0.8	0.9	0.9	0.9
CO (µg/m³)	148	142	138	136	135	135	138	143	145	142	137	133	131	129	128	126	125	126	131	139	146	151	154	155

Sat, Jul 4, 2026

Sun, Jul 5 →

Frequently asked questions about the weather in Boston

Today in Boston the temperature ranges from 21 °C to 37 °C, wind up to 4.39 m/s. Check the detailed hourly forecast above for more information.

The precipitation probability in Boston today is 2%. View the full multi-day forecast above to see the rain chances for each upcoming day.

The wind speed in Boston today reaches up to 4.39 m/s with gusts up to 5.39 m/s. Check the detailed wind chart above for hourly wind data.

The air humidity in Boston today ranges from 34% to 77%. View the humidity chart above for hourly details.

The UV index in Boston today reaches up to 8.8. Check the UV index chart above for hourly values throughout the day.

The atmospheric pressure in Boston today ranges from 757 to 761 mm Hg. View the pressure chart above for hourly readings.

Cloud cover in Boston today reaches up to 89%. Check the cloud cover chart above for hourly details throughout the day.

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 →