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)	2.31	1.61	1.31	1	1.31	1.19	1.31	0.81	0.81	0.89	1.5	1.81	1.5	1.89	1.5	1.89	2.39	2.81	2.61	2.5	2.31	2.19	2	1.89
Wind gust (m/s)	8.03	3.61	2.92	2.11	2.42	2.5	2.03	1.11	1.56	1.53	2.14	2.33	1.69	2	1.72	3.39	5.11	6.81	6.61	6.39	6.22	5.69	5.31	4.81
Wind direction (°)	SE 140°	SSE 154°	S 173°	SSW 192°	S 181°	SSE 167°	S 190°	S 179°	S 180°	S 179°	SSE 151°	SSE 161°	S 171°	SSE 168°	SSE 160°	SSE 153°	SE 146°	SE 139°	SE 138°	SE 138°	SE 137°	SE 142°	SSE 147°	SSE 153°

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 (%)	79	86	88	88	86	83	86	86	80	71	63	56	50	46	44	44	45	45	53	61	68	70	72	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)	770	770	770	770	770	770	770	770	770	770	770	770	770	770	770	769	768	768	768	769	769	769	769	770

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	5	5	5	6	6	6	7	7	7	7	7	7	6	0	0	0	0

Air quality & pollen

Air quality is available for the first three days only.

← Tue, Sep 15

Wed, Sep 16, 2026

Fairfax 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 →