Cedar Knolls, New Jersey Weather
Cicadas claim the afternoon. Day 15 of summer. Read this microseason across nine climate regions →
Cedar Knolls weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 5Showers69%0.50″86°71°—
- MondayJul 6Heavy Rain94%2.0″73°67°-13°
- TuesdayJul 7Light Drizzle84%0.02″69°62°-4°
- WednesdayJul 8Overcast24%—78°62°+9°
- ThursdayJul 9Light Drizzle18%—81°64°+3°
- FridayJul 10Drizzle37%—84°69°+3°
- SaturdayJul 11Overcast19%—84°62°0°
AQI 33 (Good), driven by Ozone. AQI down 15 over the last 6 hours — air quality is improving sharply. Ozone at AQI 34. Overcast through the UV peak window (cloud cover ~79%) — afternoon ozone should stay flat.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion during the projected peak around 4 PM.
What's driving it
Ozone × UV × Sky
Ozone at AQI 34. Overcast through the UV peak window (cloud cover ~79%) — afternoon ozone should stay flat.
- Present
- AQI 34
- UV peak
- 0.3 at 1 PM
- Sky at peak
- overcast
- Projected peak
- AQI 4
PM × Wind × Precip
PM2.5 at 5.7 µg/m³ (AQI 32) with a 0.98 fine-to-coarse ratio and 2 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.98
- 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
- 11:15 PM
- Moonset
- 11:07 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Cedar Knolls at a glance
- Today vs. normal: 72°F — typical for the season
- Last frost: April 21 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 07927
15-Day Forecast — Cedar Knolls
- Sun86°71°69%
- Mon73°67°94%
- Tue69°62°84%
- Wed78°62°24%
- Thu81°64°18%
- Fri84°69°37%
- Sat84°62°19%
- Sun80°62°24%
- Mon70°59°19%
- Tue85°61°13%
- Wed85°66°16%
- Thu90°67°39%
- Fri79°69°26%
- Sat82°67°42%
- Sun90°68°37%
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 — Cedar Knolls
SPC has placed Cedar Knolls 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 Cedar Knolls
- 07927