Hebron, Maryland Weather
Cicadas claim the afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Hebron weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Drizzle15%0.02″103°80°—
- SundayJul 5Overcast——99°78°-4°
- MondayJul 6Showers75%—93°73°-6°
- TuesdayJul 7Showers75%0.09″91°73°-2°
- WednesdayJul 8Light Showers37%0.01″78°68°-13°
- ThursdayJul 9Light Drizzle——90°67°+12°
- FridayJul 10Overcast35%—98°74°+8°
AQI 105 (Unhealthy for Sensitive Groups), driven by Ozone. AQI up 55 in the last 6 hours — air quality is degrading. Ozone at AQI 100. Overcast through the UV peak window (cloud cover ~100%) — afternoon ozone should stay flat.
CAUTION Sensitive groups (children, elderly, respiratory conditions) should limit prolonged outdoor exertion.
What's driving it
Ozone × UV × Sky
Ozone at AQI 100. Overcast through the UV peak window (cloud cover ~100%) — afternoon ozone should stay flat.
- Present
- AQI 100
- UV peak
- 0.2 at 1 PM
- Sky at peak
- overcast
- Projected peak
- AQI 12
PM × Wind × Precip
PM2.5 at 14.5 µg/m³, PM10 at 16.8 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.86
- Wind
- breezy
- 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).
If the first of July be rainy weather, 'twill rain more or less for four weeks together.
- Moonrise
- 10:54 PM
- Moonset
- 10:08 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Hebron at a glance
- Today vs. normal: 24°F above the seasonal normal for this latitude
- Last frost: April 7 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 21830
16-Day Forecast — Hebron
- Sat103°80°15%
- Sun99°78°6%
- Mon93°73°75%
- Tue91°73°75%
- Wed78°68°37%
- Thu90°67°8%
- Fri98°74°35%
- Sat99°75°35%
- Sun87°72°26%
- Mon79°68°22%
- Tue88°68°16%
- Wed90°73°42%
- Thu92°72°43%
- Fri91°72°39%
- Sat96°73°32%
- Sun94°77°38%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of July 4, 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 — Hebron
SPC has placed Hebron in the Slight Risk category for severe thunderstorms today.
- TODAYSLGTSlight Risk
- TOMORROWSLGTSlight Risk
- DAY 3TSTMGeneral Thunderstorms
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 Hebron
- 21830