5-day weather forecast San Francisco 28-04-2026

Weather forecast San Francisco Tuesday, April 28 28.04.2026: sunny, temperature from 11 °C to 16 °C.

No precipitation expected. Wind up to 4.89 m/s (gusts 6.42 m/s). Air humidity 61–86%, atmospheric pressure 764–766 mm Hg, UV index up to 7.3.

Sunrise 06:17
Sunset 19:58

Waxing Gibbous87% illuminated
Moonrise 17:25 · Moonset 04:37

Chart

Table

← Mon, Apr 27

Tue, Apr 28, 2026

Wed, Apr 29 →

Forecast from 11 °C to 16 °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)	12	11	11	11	11	11	11	12	12	13	14	15	15	16	16	16	16	16	15	14	14	13	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 (%)	13	17	20	11	10	12	14	15	10	0	0	0	0	0	0	0	0	0	0	0	5	0	0	0
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)	3.11	2.81	2.5	1.89	1.89	2.31	2.31	1.5	1.39	1.5	0.89	1.31	2.39	3.5	3.89	4.39	4.69	4.89	4.69	4.5	3.69	2.89	2.5	2.19
Wind gust (m/s)	4.64	4.22	3.81	2.89	2.92	3.56	3.58	2.25	1.89	1.89	1.03	1.5	2.75	4.11	4.61	5.36	5.75	6.33	6.39	6.42	5.67	4.58	4.03	3.56
Wind direction (°)	W 277°	W 272°	W 263°	WSW 239°	SSW 213°	SSW 205°	SSW 210°	SW 218°	SSW 205°	S 191°	SSW 210°	SW 221°	WSW 242°	WSW 256°	W 262°	W 264°	W 268°	W 275°	W 278°	W 272°	WNW 284°	WNW 287°	WNW 285°	WNW 287°

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 (%)	83	83	83	84	84	85	86	86	81	76	70	66	63	62	62	61	61	63	66	70	77	77	77	77

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)	764	764	764	764	764	764	764	765	766	766	766	766	766	766	765	765	764	764	764	764	765	765	766	766

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	0.6	1.6	3.3	5.1	6.6	7.3	7	5.8	4	2.3	1	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)	12.7	13.1	12	11.5	11.8	12.2	12.7	12.7	12.5	12.3	11.8	11.3	11.1	11.2	12	12.9	13.6	13.8	13.6	13.4	13.2	13	12.9	13
PM10 (µg/m³)	17.7	18.4	17.4	16.6	16.8	17.3	18	18.1	18	17.8	17.3	16.6	16.1	16	16.7	17.5	18.1	18.2	18	17.6	17.1	16.7	16.5	16.5
Ozone (O₃) (µg/m³)	66	67	70	75	79	83	87	89	90	89	87	83	77	71	65	59	54	52	53	53	53	53	53	54
NO₂ (µg/m³)	10.4	9.5	8.4	7.2	6.2	5.6	5.1	4.9	4.6	4.5	5.1	6.9	9.4	12.1	15.3	18.6	20.7	20.6	19.2	17.9	17.3	16.7	16	14.9
SO₂ (µg/m³)	2.9	3.1	3.4	3.7	4	4.1	4.2	4.1	3.8	3.5	3.2	3.1	3	3	3.1	3.2	3.2	3.1	3	2.9	2.8	2.8	2.8	3
CO (µg/m³)	145.9	150.9	152.9	153.9	153.9	152.9	151.9	150.9	147.9	144.9	146.9	159.9	177.9	187.9	182.9	170.9	159.9	153.9	149.9	146.9	145.9	146.9	147.9	148.9

← Mon, Apr 27

Tue, Apr 28, 2026

Wed, Apr 29 →

San Francisco 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 →