5-day weather forecast Boston 19-04-2026

Weather forecast Boston Sunday, April 19 19.04.2026: mist, temperature from 4 °C to 9 °C.

Precipitation probability 100%. Wind up to 5.81 m/s (gusts 8 m/s). Air humidity 80–97%, atmospheric pressure 755–761 mm Hg, UV index up to 2.

Sunrise 05:57
Sunset 19:31

Waxing Crescent3% illuminated
Moonrise 06:50 · Moonset 22:53

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Table

← Sat, Apr 18

Sun, Apr 19, 2026

Mon, Apr 20 →

Forecast from 4 °C to 9 °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)	7	6	7	7	7	7	7	7	7	8	8	8	8	9	8	7	6	5	5	5	4	4	5	4
Precipitation (mm/hr)	0	0	0	0	0	0	0.86	1.3	1.73	3.82	4.86	5.9	4.08	3.16	2.25	5.38	6.95	8.52	4.26	2.13	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	100	100	100	100	100	100	100	92	88	100
Rain chance (%)	0	0	0	0	0	0	100	100	100	100	100	100	100	100	100	100	100	100	100	100	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	1.5	1.61	1.5	1.81	2.39	2.69	3	3.31	3.11	2.61	2.81	2	3.11	5	5.81	5.11	4.19	3.89	4.81	3.89	3.5	3.81	4.61
Wind gust (m/s)	1.33	2.03	2.19	2.14	2.64	3.47	3.78	4.17	4.67	4.53	3.78	4.03	3.03	4.56	6.47	8	7.08	5.78	5.42	6.64	5.64	5.19	5.89	7.11
Wind direction (°)	SSE 154°	SE 129°	SSE 158°	SSE 158°	SSE 164°	SSE 168°	S 188°	SSE 165°	S 169°	S 178°	S 189°	WSW 255°	WSW 251°	W 273°	WNW 298°	NW 309°	NNW 328°	WNW 301°	WNW 291°	WNW 301°	WNW 295°	W 281°	W 269°	W 274°

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 (%)	94	94	94	94	95	95	96	97	97	96	96	95	94	94	93	92	92	92	87	85	83	81	80	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)	761	760	760	759	758	758	758	758	757	756	756	755	755	755	755	755	755	756	757	758	758	760	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	0.1	0.1	0.3	0.9	0.9	1.2	2	0.4	0.2	0.6	0.2	0	0	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)	6.4	5.7	6.3	9.3	13.2	13.9	11.8	7.3	4.8	3	2.7	2.8	2.9	3.2	3.8	4.9	4.9	4.7	4.3	4.1	3.9	3.9	4	4
PM10 (µg/m³)	6.7	6	6.6	10	14.4	15.3	13.6	8.5	5.2	3.4	3	3.2	3.2	3.4	3.9	5	5.3	5.1	4.7	4.4	4.2	4.2	4.3	4.3
Ozone (O₃) (µg/m³)	72	79	83	86	88	89	88	89	93	99	101	96	88	81	75	69	68	74	83	90	91	89	87	85
NO₂ (µg/m³)	8.9	7	8	10.7	12.6	12.7	12	11.1	9.7	8.1	7.4	8.1	9.7	11.5	13.9	16.4	17.4	15.5	12	9.2	8	7.5	7.2	7.1
SO₂ (µg/m³)	2.8	2.2	2	2	2.1	2.3	2.6	2.8	2.6	2.2	2	2.1	2.4	2.6	2.8	2.9	2.9	2.8	2.6	2.4	2.3	2.3	2.4	2.5
CO (µg/m³)	179.9	164.9	171.9	190.9	205.9	211.9	214.9	212.9	203.9	189.9	179.9	176.9	176.9	179.9	187.9	198.9	205.9	204.9	198.9	194.9	194.9	195.9	193.9	184.9

← Sat, Apr 18

Sun, Apr 19, 2026

Mon, Apr 20 →

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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