Florham Park, New Jersey Weather
Fireflies rise from the lawn. Day 77 of spring. Read this microseason across nine climate regions →
Florham Park weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 4Overcast——86°54°—
- FridayJun 5Overcast——91°60°+5°
- SaturdayJun 6Showers34%—91°64°0°
- SundayJun 7Light Drizzle34%0.02″85°66°-6°
- MondayJun 8Mostly Clear——81°57°-4°
- TuesdayJun 9Overcast——85°57°+4°
- WednesdayJun 10Overcast——90°62°+5°
Ozone at AQI 500 — peak already passed at 1 PM under clear skies. AQI up 31 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
- 3.5 at earlier today
- Sky at peak
- clear
- Projected peak
- AQI 500
PM × Wind × Precip
PM2.5 at 4.6 µg/m³, PM10 at 4.7 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.98
- Wind
- light
- 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).
A summer fog for fair, a winter fog for rain.
- Moonrise
- 3:28 AM
- Moonset
- 12:55 PM
- In sign
- ♒︎ Aquarius
Fireflies rise from the lawn
Florham Park at a glance
- Today vs. normal: 12°F above the seasonal normal for this latitude
- Last frost: April 21 (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 — Florham Park
SPC has placed Florham Park in the Marginal Risk category for severe thunderstorms day after tomorrow.
- TODAYNONENo severe risk
- TOMORROWNONENo severe risk
- DAY 3MRGLMarginal Risk
Isolated severe storms possible. Limited threat for hail or damaging wind.
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.