Glenn Dale, Maryland Weather
Cicadas claim the afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Glenn Dale weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Light Drizzle32%—100°79°—
- SundayJul 5Light Rain51%0.08″96°75°-4°
- MondayJul 6Heavy Drizzle78%—84°73°-12°
- TuesdayJul 7Thunderstorm78%0.13″89°70°+5°
- WednesdayJul 8Rain37%0.48″80°69°-9°
- ThursdayJul 9Overcast13%—93°67°+13°
- FridayJul 10Light Drizzle41%0.04″95°71°+2°
AQI 130 (Unhealthy for Sensitive Groups), driven by Ozone. AQI up 76 in the last 6 hours — air quality is degrading. Ozone at AQI 76. Overcast through the UV peak window (cloud cover ~70%) — 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 76. Overcast through the UV peak window (cloud cover ~70%) — afternoon ozone should stay flat.
- Present
- AQI 76
- UV peak
- 0.2 at 1 PM
- Sky at peak
- overcast
- Projected peak
- AQI 9
PM × Wind × Precip
PM2.5 at 11.2 µg/m³, PM10 at 11.9 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.94
- 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
- 10:59 PM
- Moonset
- 10:11 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Glenn Dale at a glance
- Today vs. normal: 15°F above the seasonal normal for this latitude
- Last frost: April 10 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 20769
16-Day Forecast — Glenn Dale
- Sat100°79°32%
- Sun96°75°51%
- Mon84°73°78%
- Tue89°70°78%
- Wed80°69°37%
- Thu93°67°13%
- Fri95°71°41%
- Sat93°69°36%
- Sun82°68°22%
- Mon80°67°20%
- Tue88°65°18%
- Wed94°68°33%
- Thu94°69°37%
- Fri93°72°42%
- Sat95°70°44%
- Sun92°70°46%
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 — Glenn Dale
SPC has placed Glenn Dale in the Enhanced Risk category for severe thunderstorms today.
- TODAYENHEnhanced Risk
- TOMORROWSLGTSlight Risk
- DAY 3TSTMGeneral Thunderstorms
Numerous severe storms likely. Tornadoes, large hail, and damaging wind gusts possible across the area. Track NWS warnings if storms develop.
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 Glenn Dale
- 20720
- 20706
- 20769