White Marsh, Maryland Weather
Honeysuckle sweetens the night. Day 89 of spring. Read this microseason across nine climate regions →
White Marsh weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 16Overcast——77°57°—
- WednesdayJun 17Overcast10%—89°65°+12°
- ThursdayJun 18Drizzle20%—93°71°+4°
- FridayJun 19Overcast24%—82°65°-11°
- SaturdayJun 20Overcast——78°61°-4°
- SundayJun 21Light Drizzle13%0.06″81°59°+3°
- MondayJun 22Drizzle50%0.18″72°60°-9°
AQI 36 (Good), driven by Ozone. Ozone at AQI 56 now. With UV 7.8 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 58 around 1 PM.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.
What's driving it
Ozone × UV × Sky
Ozone at AQI 56 now. With UV 7.8 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 58 around 1 PM.
- Present
- AQI 56
- UV peak
- 7.8 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 58
PM × Wind × Precip
PM2.5 at 5.3 µg/m³, PM10 at 5.6 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.95
- Wind
- light
- Recent rain
- 0h in last 6h
- Pattern
- background
Trends
Seven days of AQI and PM2.5.
Hourly air-quality data from the Copernicus Atmosphere Monitoring Service, charted across the past and next several days. Dashed lines mark the AQI breakpoints at 50 (Good → Moderate) and 100 (Moderate → Unhealthy for Sensitive Groups).
Cut your thistles before St. John, you will have two instead of one.
- Moonrise
- 6:49 AM
- Moonset
- 9:49 PM
- In sign
- ♋︎ Cancer
Honeysuckle sweetens the night
White Marsh at a glance
- Today vs. normal: 75°F — typical for the season
- Last frost: April 12 (climatological average for this latitude)
- Microseason: Jun 16–20
- Planting window: Stake and prune tomato suckers. Watch for squash vine borers.
16-Day Forecast — White Marsh
- Tue77°57°1%
- Wed89°65°10%
- Thu93°71°20%
- Fri82°65°24%
- Sat78°61°1%
- Sun81°59°13%
- Mon72°60°50%
- Tue77°55°42%
- Wed82°58°15%
- Thu85°67°20%
- Fri90°68°20%
- Sat89°67°39%
- Sun97°70°32%
- Mon96°75°38%
- Tue98°73°42%
- Wed96°73°42%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of June 16, the growing season is at its peak — frost is months away. Continue succession-planting beans and summer squash. Start fall brassicas (broccoli, cabbage, kale) from seed indoors for transplanting in late summer.
SPC Convective Outlook
Storm Prediction Center — White Marsh
SPC has placed White Marsh in the Slight Risk category for severe thunderstorms day after tomorrow.
- TODAYTSTMGeneral Thunderstorms
- TOMORROWNONENo severe risk
- DAY 3SLGTSlight Risk
Scattered severe storms possible. A few tornadoes, hail, and damaging wind gusts possible.
Source: NOAA / NWS Storm Prediction Center categorical convective outlook. Outlooks are re-issued multiple times per day; this page reflects the most recent SPC polygons covering the city’s coordinates.
ZIP codes in White Marsh
- 21128
- 21237
- 21236
- 21162