Reston, Virginia Weather
Fireflies rise from the lawn. Day 77 of spring. Read this microseason across nine climate regions →
Reston weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 4Overcast——87°53°—
- FridayJun 5Overcast——92°61°+5°
- SaturdayJun 6Overcast22%—93°67°+1°
- SundayJun 7Heavy Drizzle22%—87°68°-6°
- MondayJun 8Overcast——81°61°-6°
- TuesdayJun 9Overcast——85°56°+4°
- WednesdayJun 10Overcast——88°61°+3°
Ozone at AQI 500 — peak already passed at 1 PM under clear skies. AQI up 23 in the last 6 hours — air quality is degrading. Levels should ease through evening.
AVOID OUTDOORS Avoid outdoor exertion. Keep windows closed; use HEPA filtration indoors if available.
What's driving it
Ozone × UV × Sky
Ozone at AQI 500 — peak already passed at 1 PM under clear skies. Levels should ease through evening.
- Present
- AQI 500
- UV peak
- 6.1 at earlier today
- Sky at peak
- clear
- Projected peak
- AQI 500
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).
A summer fog for fair, a winter fog for rain.
- Moonrise
- 3:34 AM
- Moonset
- 1:12 PM
- In sign
- ♒︎ Aquarius
Fireflies rise from the lawn
Reston at a glance
- Today vs. normal: 11°F above the seasonal normal for this latitude
- Last frost: April 10 (climatological average for this latitude)
- Microseason: Jun 1–5
- Planting window: Harvest spring lettuce before it bolts. Sow heat-tolerant greens.
Right now in the garden
Peak growing season
As of June 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 — Reston
SPC has placed Reston in the General Thunderstorms category for severe thunderstorms day after tomorrow.
- TODAYNONENo severe risk
- TOMORROWNONENo severe risk
- DAY 3TSTMGeneral Thunderstorms
Thunderstorms possible. Not severe, but capable of producing lightning and brief heavy rain.
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.