Old Tappan, New Jersey Weather
Cicadas claim the afternoon. Day 15 of summer. Read this microseason across nine climate regions →
Old Tappan weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 5Light Drizzle62%0.02″86°73°—
- MondayJul 6Heavy Rain76%1.8″73°66°-13°
- TuesdayJul 7Drizzle86%0.03″68°63°-5°
- WednesdayJul 8Overcast20%—86°60°+18°
- ThursdayJul 9Overcast18%—89°68°+3°
- FridayJul 10Light Showers41%0.02″83°70°-6°
- SaturdayJul 11Overcast31%—86°62°+3°
AQI 48 (Good), driven by Ozone. AQI up 8 over the last 6 hours (gradual rise). Ozone at AQI 76 — peak already passed at 1 PM under overcast skies. Levels should ease through evening.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion during the projected peak around 10 PM.
What's driving it
Ozone × UV × Sky
Ozone at AQI 76 — peak already passed at 1 PM under overcast skies. Levels should ease through evening.
- Present
- AQI 76
- UV peak
- 0.8 at earlier today
- Sky at peak
- overcast
- Projected peak
- AQI 76
PM × Wind × Precip
PM2.5 at 15.0 µg/m³ (AQI 62) with a 0.95 fine-to-coarse ratio and 2 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.95
- Wind
- calm
- 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
- 11:13 PM
- Moonset
- 11:05 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Old Tappan at a glance
- Today vs. normal: 15°F above the seasonal normal for this latitude
- Last frost: April 22 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
16-Day Forecast — Old Tappan
- Sun86°73°62%
- Mon73°66°76%
- Tue68°63°86%
- Wed86°60°20%
- Thu89°68°18%
- Fri83°70°41%
- Sat86°62°31%
- Sun84°68°20%
- Mon88°69°19%
- Tue78°67°13%
- Wed80°65°18%
- Thu80°66°26%
- Fri91°67°25%
- Sat86°70°23%
- Sun79°69°27%
- Mon69°67°32%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of July 5, 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 — Old Tappan
SPC has placed Old Tappan in the Marginal Risk category for severe thunderstorms today.
- TODAYMRGLMarginal Risk
- TOMORROWTSTMGeneral Thunderstorms
- DAY 3NONENo severe 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.
ZIP codes in Old Tappan
- 07675