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)	1.69	2.81	2.61	2	2.69	2.89	2.31	3	2.69	2.31	3.19	3	2.5	3	3.11	2.39	2.39	2.31	2.39	2.81	2.5	2.31	2.69	2.5
Wind gust (m/s)	2.53	2.92	2.61	2.81	2.81	3.72	3.86	4.72	5.92	4.75	4.72	4	4.94	3.5	3.69	4.58	3.61	2.31	3.11	2.81	2.5	3.39	2.81	2.72
Wind direction (°)	NNW 331°	N 2°	N 9°	N 6°	NNE 33°	NE 41°	NE 35°	ENE 64°	ENE 69°	ENE 78°	E 96°	ESE 105°	ESE 117°	SE 127°	SE 138°	SE 142°	SSE 149°	SE 140°	SE 135°	SE 143°	SSE 148°	SSE 168°	S 170°	S 176°

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 (%)	86	76	77	89	78	79	89	80	76	78	57	53	57	51	52	57	59	67	80	74	78	88	87	89

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	763	764	764	764	764	764	764	764	765	764	764	764	762	761	761	761	760	761	760	760	761	760	759

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	0.1	0.6	1.4	2.1	2.6	2.5	1.9	1.1	0.4	0	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)	3.7	4.4	5.3	6.1	6.7	7.1	7.2	7.1	6.7	5.8	4.8	4.2	4.1	4	4.1	4.1	4.2	4.8	5.5	5.8	5.8	5.8	5.9	6.1
PM10 (µg/m³)	3.7	4.5	5.4	6.2	6.8	7.2	7.4	7.3	7	6.1	5.3	5	5.1	5.2	5.3	5.5	5.6	6.1	6.8	7	7	7	7	7.3
Ozone (O₃) (µg/m³)	33	27	22	17	14	13	13	14	15	19	26	36	45	53	60	63	57	47	38	34	33	31	29	26
NO₂ (µg/m³)	8.3	10.1	12.3	13.7	14.2	14.1	13.2	10.9	7.8	5.3	4.1	3.5	3	2.2	1.5	1.9	4.4	8	10.6	11.2	10.8	10.6	11	11.7
SO₂ (µg/m³)	0.3	0.4	0.4	0.5	0.5	0.6	0.6	0.6	0.5	0.5	0.6	0.6	0.7	0.7	0.7	0.7	0.7	0.6	0.6	0.6	0.6	0.6	0.6	0.6
CO (µg/m³)	147	149	152	159	172	189	202	208	210	206	190	168	151	142	139	142	155	175	192	203	212	216	214	208

← Mon, Nov 9

Tue, Nov 10, 2026

Wed, Nov 11 →

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 →