Monmouth Junction, New Jersey Weather
Fireflies rise from the lawn. Day 76 of spring. Read this microseason across nine climate regions →
Monmouth Junction weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 3Partly Cloudy——83°56°—
- ThursdayJun 4Overcast——88°56°+5°
- FridayJun 5Overcast——87°61°-1°
- SaturdayJun 6Light Drizzle16%—88°65°+1°
- SundayJun 7Heavy Drizzle63%0.09″82°61°-6°
- MondayJun 8Light Drizzle32%0.01″77°57°-5°
- TuesdayJun 9Overcast14%—82°53°+5°
Ozone at AQI 63 now. AQI up 39 in the last 6 hours — air quality is degrading. With UV 0.2 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 15 by mid-afternoon.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.
What's driving it
Ozone × UV × Sky
Ozone at AQI 63 now. With UV 0.2 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 15 by mid-afternoon.
- Present
- AQI 63
- UV peak
- 0.2 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 15
PM × Wind × Precip
PM2.5 at 4.9 µg/m³ (AQI 27) with a 0.96 fine-to-coarse ratio and 2 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.96
- 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).
The higher the clouds, the finer the weather.
- Moonrise
- 2:50 AM
- Moonset
- 11:53 AM
- In sign
- ♑︎ Capricorn
Fireflies rise from the lawn
Monmouth Junction at a glance
- Today vs. normal: 5°F above the seasonal normal for this latitude
- Last frost: April 18 (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 3, 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.