Gaithersburg, Maryland Weather Forecast

Local

Gaithersburg, MD, US

39.14344, -77.20137

Air Quality

Updated 3 minutes ago

Moderate

Primary Pollutant: PM2.5

O3	52 µg/m3 (24)
PM2.5	26 µg/m3 (81)
PM10	28 µg/m3 (25)

CO	475 µg/m3 (5)
NO2	25 µg/m3 (12)
SO2	4 µg/m3 (2)

Source: CAMS, Vaisala Xweather

Nearby Stations

Station	AQI	Primary Pollutant	PM2.5 (AQI)	PM10 (AQI)	NO2 (AQI)	OZONE (AQI)	CO (AQI)	SO2 (AQI)
Rose Hill	45	O3	7.7 (32)	15 (14)	n/a	100 (45)	n/a	1.572 (1)
Middleway	33	PM2.5	8.1 (33)	21 (19)	n/a	1.96 (1)	n/a	n/a
Haymarket	25	O3	n/a	n/a	8.084 (4)	55 (25)	n/a	n/a
Ashburn	25	PM2.5	6.1 (25)	13 (12)	19 (9)	53 (24)	n/a	n/a
Aquia Harbour	29	O3	n/a	n/a	n/a	63 (29)	n/a	n/a
Arlington	24	O3	n/a	n/a	28 (14)	53 (24)	229 (2)	n/a
Martinsburg	22	O3	n/a	n/a	n/a	49 (22)	n/a	n/a
Washington D.C.	25	PM2.5	6 (25)	n/a	n/a	n/a	n/a	n/a
Washington D.C.	21	NO2	n/a	n/a	43 (21)	45 (20)	687 (7)	n/a
Fairmount Heights	25	PM2.5	6 (25)	n/a	37 (18)	41 (19)	n/a	n/a

Source: Virginia Dept. of Environmental Quality, West Virginia Division of Air Quality - Wheeling, District of Columbia - Department of Energy and Environment

Extended Forecast


Hour
AQI
Primary
Wind Dir

Wind Speed ( mph kmh)
Temp (°F°C)

Wednesday, May 1	Thursday, May 2																								Friday, May 3																								Saturday, May 4																								Sunday, May 5
11pm	12am	1am	2am	3am	4am	5am	6am	7am	8am	9am	10am	11am	12pm	1pm	2pm	3pm	4pm	5pm	6pm	7pm	8pm	9pm	10pm	11pm	12am	1am	2am	3am	4am	5am	6am	7am	8am	9am	10am	11am	12pm	1pm	2pm	3pm	4pm	5pm	6pm	7pm	8pm	9pm	10pm	11pm	12am	1am	2am	3am	4am	5am	6am	7am	8am	9am	10am	11am	12pm	1pm	2pm	3pm	4pm	5pm	6pm	7pm	8pm	9pm	10pm	11pm	12am	1am	2am	3am	4am	5am	6am	7am	8am	9am	10am	11am	12pm	1pm	2pm	3pm	4pm	5pm	6pm	7pm	8pm	9pm	10pm	11pm
81	87	85	68	43	36	35	36	40	38	30	32	44	50	54	60	63	63	60	60	50	39	47	46	46	43	41	39	38	38	43	38	29	28	26	34	41	45	48	52	53	47	43	39	36	33	31	30	29	31	31	30	30	33	38	38	38	38	39	39	40	38	35	35	36	34	33	35	34	32	32	31	31	31	31	31	31	30	30	30	29	28	27	26	25	28	31	34	35	35	35	32	33	38	42	42	42
PM2.5	PM2.5	PM2.5	PM2.5	PM2.5	PM2.5	PM2.5	PM2.5	PM2.5	PM2.5	PM2.5	O3	O3	O3	O3	O3	O3	O3	O3	O3	O3	O3	PM2.5	PM2.5	PM2.5	PM2.5	PM2.5	PM2.5	PM2.5	PM2.5	PM2.5	PM2.5	PM2.5	PM2.5	O3	O3	O3	O3	O3	O3	O3	O3	O3	O3	O3	O3	O3	O3	O3	O3	O3	O3	O3	PM2.5	PM2.5	PM2.5	PM2.5	PM2.5	PM2.5	PM2.5	PM2.5	PM2.5	O3	O3	O3	O3	O3	O3	O3	O3	O3	O3	O3	O3	O3	O3	O3	O3	O3	O3	O3	O3	O3	O3	O3	O3	O3	O3	O3	O3	O3	O3	PM2.5	PM2.5	PM2.5	PM2.5	PM2.5

SSW	SSW	SW	SW	WSW	WSW	WSW	WSW	W	W	W	WNW	WNW	WNW	WNW	WNW	WNW	W	W	W	NW	NE	NNE	NNE	NE	NE	NE	NE	ENE	ENE	ENE	ENE	ENE	ENE	E	E	ESE	ESE	ESE	ESE	ESE	ESE	ESE	ESE	ESE	ESE	ESE	ESE	ESE	ESE	ESE	ESE	ESE	ESE	ESE	ESE	ESE	ESE	ESE	ESE	SE	SE	SE	SE	SE	SE	SE	SE	SE	SE	SE	SE	SE	SE	SE	ESE	ESE	ESE	ESE	ESE	E	E	E	ESE	SE	SSE	S	SSW	SW	SSW	S	S	SSE	SE	ESE	SE	SE
4 6	5 8	5 8	5 8	5 8	5 7	5 8	5 8	5 8	5 7	5 8	6 9	7 11	7 12	7 12	7 11	6 10	6 9	4 7	3 5	1 1	2 4	4 7	5 8	6 9	6 9	6 10	8 13	10 16	10 15	9 14	8 12	7 12	8 12	9 14	8 13	8 14	9 15	9 14	9 15	10 16	11 17	11 18	13 20	13 21	13 20	11 19	11 17	11 17	8 14	8 13	8 13	8 13	8 13	8 13	8 14	9 14	9 15	9 15	9 15	9 15	9 15	9 14	9 14	9 14	9 15	10 15	10 15	9 15	10 16	11 18	11 18	11 17	10 16	9 15	8 13	8 12	7 12	7 11	6 10	5 8	4 7	3 5	3 5	2 4	2 3	3 4	4 6	4 6	3 5	3 5	3 4	2 4	1 1	2 3	3 5	4 6
69 20.4	67 19.4	65 18.2	61 16.3	60 15.6	59 15.2	59 14.9	58 14.7	59 15.1	64 17.7	69 20.8	75 23.8	79 26.2	82 27.8	84 29.1	86 30.1	87 30.7	88 31	88 31.1	87 30.5	85 29.4	82 27.6	78 25.8	75 24	71 21.8	69 20.8	68 20	67 19.3	65 18.6	64 17.5	63 17.2	64 17.6	63 17.5	65 18.2	65 18.6	68 19.9	70 21.1	72 22	73 22.9	75 23.8	75 24	75 24.1	76 24.3	74 23.1	71 21.8	69 20.6	65 18.6	62 16.5	58 14.4	57 14.1	57 13.7	56 13.3	55 12.8	54 12.2	53 11.7	53 11.9	54 12.2	54 12.5	56 13.5	58 14.5	60 15.4	61 15.9	62 16.5	63 17	63 17.3	64 17.5	64 17.8	64 17.6	63 17.4	63 17.1	61 16.3	60 15.6	59 14.9	58 14.5	57 14.1	57 13.7	56 13.5	56 13.3	56 13.1	56 13.1	56 13.1	56 13.1	57 13.8	58 14.6	60 15.3	61 16	62 16.7	63 17.4	65 18.2	66 19	68 19.8	67 19.6	67 19.4	66 19.2	65 18.5	64 17.9	63 17.3

Source: CAMS, Vaisala Xweather