Lanham, Maryland Weather
Cicadas claim the afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Lanham weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Light Drizzle27%0.01″102°80°—
- SundayJul 5Heavy Drizzle41%0.12″97°75°-5°
- MondayJul 6Heavy Drizzle79%—85°74°-12°
- TuesdayJul 7Thunderstorm76%0.16″89°71°+4°
- WednesdayJul 8Rain20%0.37″79°70°-10°
- ThursdayJul 9Overcast21%—93°68°+14°
- FridayJul 10Light Drizzle40%0.05″94°72°+1°
AQI 111 (Unhealthy for Sensitive Groups), driven by Ozone. AQI up 56 in the last 6 hours — air quality is degrading. Ozone at AQI 124 — peak already passed at 1 PM under clear skies. Levels should ease through evening.
CAUTION Sensitive groups (children, elderly, respiratory conditions) should limit prolonged outdoor exertion, especially during the projected peak around 10 PM.
What's driving it
Ozone × UV × Sky
Ozone at AQI 124 — peak already passed at 1 PM under clear skies. Levels should ease through evening.
- Present
- AQI 124
- UV peak
- 4.0 at earlier today
- Sky at peak
- clear
- Projected peak
- AQI 124
PM × Wind × Precip
PM2.5 at 10.1 µg/m³ (AQI 53) with a 0.91 fine-to-coarse ratio and 5 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.91
- Wind
- light
- Recent rain
- 0h in last 6h
- Pattern
- stagnant smoke
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
- 10:12 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Lanham at a glance
- Today vs. normal: 29°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: 20706
16-Day Forecast — Lanham
- Sat102°80°27%
- Sun97°75°41%
- Mon85°74°79%
- Tue89°71°76%
- Wed79°70°20%
- Thu93°68°21%
- Fri94°72°40%
- Sat93°70°37%
- Sun82°70°22%
- Mon80°69°23%
- Tue88°66°18%
- Wed95°70°33%
- Thu95°71°37%
- Fri92°74°42%
- Sat95°71°44%
- Sun91°71°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 — Lanham
SPC has placed Lanham 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 Lanham
- 20706