Tall Timbers, Maryland Weather
Cicadas claim the afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Tall Timbers weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Showers30%0.19″97°80°—
- SundayJul 5Light Drizzle11%0.02″97°77°0°
- MondayJul 6Showers72%0.13″92°74°-5°
- TuesdayJul 7Light Showers72%—87°71°-5°
- WednesdayJul 8Showers39%—79°70°-8°
- ThursdayJul 9Partly Cloudy16%—91°69°+12°
- FridayJul 10Overcast34%—101°73°+10°
AQI 172 (Unhealthy), driven by Ozone. AQI up 114 in the last 6 hours — air quality is degrading. Ozone at AQI 142. Overcast through the UV peak window (cloud cover ~100%) — afternoon ozone should stay flat.
LIMIT OUTDOORS Limit prolonged outdoor exertion. Sensitive groups should avoid outdoor exertion. Consider rescheduling outdoor activities until AQI improves.
What's driving it
Ozone × UV × Sky
Ozone at AQI 142. Overcast through the UV peak window (cloud cover ~100%) — afternoon ozone should stay flat.
- Present
- AQI 142
- UV peak
- 0.1 at 1 PM
- Sky at peak
- overcast
- Projected peak
- AQI 17
PM × Wind × Precip
PM2.5 at 17.2 µg/m³, PM10 at 19.6 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.88
- Wind
- light
- Recent rain
- 1h 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
- 10:57 PM
- Moonset
- 10:11 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Tall Timbers at a glance
- Today vs. normal: 20°F above the seasonal normal for this latitude
- Last frost: April 5 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 20690
16-Day Forecast — Tall Timbers
- Sat97°80°30%
- Sun97°77°11%
- Mon92°74°72%
- Tue87°71°72%
- Wed79°70°39%
- Thu91°69°16%
- Fri101°73°34%
- Sat96°76°37%
- Sun83°69°35%
- Mon81°67°24%
- Tue90°65°18%
- Wed91°68°42%
- Thu91°69°37%
- Fri94°72°40%
- Sat98°73°40%
- Sun94°76°39%
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 — Tall Timbers
SPC has placed Tall Timbers in the Enhanced Risk category for severe thunderstorms today.
- TODAYENHEnhanced Risk
- TOMORROWSLGTSlight Risk
- DAY 3MRGLMarginal Risk
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 Tall Timbers
- 20692
- 20690