5-day weather forecast Boston 04-05-2026

Weather forecast Boston today 04.05.2026: sunny, temperature from 5 °C to 24 °C.

No precipitation expected. Wind up to 7.5 m/s (gusts 8.64 m/s). Air humidity 24–66%, atmospheric pressure 756–758 mm Hg, UV index up to 6.1.

Sunrise 05:36
Sunset 19:48

Waning Gibbous95% illuminated
Moonrise 23:14 · Moonset 06:49

Chart

Table

Mon, May 4, 2026

Tue, May 5 →

Forecast from 5 °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)	5	5	5	5	5	5	6	9	12	14	18	20	21	22	23	24	24	21	19	17	16	14	13	13
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 (%)	0	0	0	0	0	0	0	0	50	0	0	0	0	0	0	0	0	2	19	16	13	14	11	10
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)	3.69	3.69	4.31	3.89	3.39	3.81	4.19	4.61	5.19	5.89	7	7.5	7.31	6.89	6.61	6.39	5.69	4.89	4.69	5.39	5.19	4.89	4.39	4.19
Wind gust (m/s)	5.97	6.08	6.89	6.03	5.03	5.92	6.39	6.58	6.67	6.92	8.06	8.64	8.39	7.94	7.58	7.36	7.17	6.67	7.31	8.06	8.08	7.72	7.17	7.08
Wind direction (°)	W 264°	W 260°	W 260°	W 269°	WSW 244°	SW 231°	SW 223°	SW 229°	SW 236°	WSW 241°	WSW 242°	WSW 251°	WSW 256°	WSW 256°	WSW 258°	WSW 257°	WSW 257°	WSW 246°	SW 222°	SSW 210°	SSW 213°	SW 214°	SSW 212°	SSW 208°

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 (%)	63	66	65	64	61	60	60	62	40	36	31	29	26	25	24	24	25	25	47	49	53	57	61	65

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	757	757	757	757	756	756	757	757	757	758	758	758	758

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	0.3	1	2.2	3.7	5.2	6.1	5.5	2.7	4	2.1	1.4	0.5	0.1	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)	5.2	5.3	5.2	5.4	6.2	6.4	6.7	7.1	7.1	7.5	7.8	7.8	7.8	8.5	8.9	8.9	8.3	8.1	7.5	7	6.7	6.5	6.3	6.2
PM10 (µg/m³)	5.4	5.5	5.4	5.6	6.4	6.6	6.9	7.4	7.7	8.2	8.6	8.6	8.6	9.1	9.4	9.3	8.7	8.9	8.3	7.8	7.5	7.4	7.3	7.3
Ozone (O₃) (µg/m³)	65	63	61	60	64	75	91	105	114	121	125	127	127	125	120	113	108	107	107	108	109	110	110	110
NO₂ (µg/m³)	11.7	11.8	12.1	12.5	12.3	10.9	8.9	7.1	5.9	4.9	4.4	4.3	4.8	6	8.9	12.7	15.1	14.9	13.3	11.6	10.2	8.7	7.5	6.7
SO₂ (µg/m³)	3.3	3.5	3.6	3.8	4.4	6.1	8.2	9.4	8.8	7.1	5.8	5.2	4.8	4.5	4.4	4.3	4.3	4.2	4	3.8	3.7	3.5	3.4	3.3
CO (µg/m³)	170.9	172.9	189.9	213.9	225.9	215.9	194.9	177.9	168.9	162.9	161.9	165.9	174.9	181.9	186.9	189.9	191.9	190.9	186.9	182.9	176.9	169.9	164.9	160.9

Mon, May 4, 2026

Tue, May 5 →

Frequently asked questions about the weather in Boston

Today in Boston the temperature ranges from 5 °C to 24 °C, wind up to 7.5 m/s. Check the detailed hourly forecast above for more information.

The precipitation probability in Boston today is 0%. 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 7.5 m/s with gusts up to 8.64 m/s. Check the detailed wind chart above for hourly wind data.

The air humidity in Boston today ranges from 24% to 66%. View the humidity chart above for hourly details.

The UV index in Boston today reaches up to 6.1. Check the UV index chart above for hourly values throughout the day.

The atmospheric pressure in Boston today ranges from 756 to 758 mm Hg. View the pressure chart above for hourly readings.

Cloud cover in Boston today reaches up to 50%. 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 →