Central Islip, New York Weather
Cicadas claim the afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Central Islip weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Overcast35%—97°77°—
- SundayJul 5Heavy Rain43%3.4″86°71°-11°
- MondayJul 6Light Showers85%0.17″72°68°-14°
- TuesdayJul 7Drizzle82%0.04″70°63°-2°
- WednesdayJul 8Overcast22%—79°63°+9°
- ThursdayJul 9Light Drizzle10%—88°68°+9°
- FridayJul 10Overcast41%—93°72°+5°
AQI 103 (Unhealthy for Sensitive Groups), driven by Ozone. AQI up 49 in the last 6 hours — air quality is degrading. Ozone at AQI 159 — peak already passed at 1 PM under clear skies. Levels should ease through evening.
CAUTION Sensitive groups (children, elderly, respiratory conditions) should limit prolonged outdoor exertion.
What's driving it
Ozone × UV × Sky
Ozone at AQI 159 — peak already passed at 1 PM under clear skies. Levels should ease through evening.
- Present
- AQI 159
- UV peak
- 3.5 at earlier today
- Sky at peak
- clear
- Projected peak
- AQI 159
PM × Wind × Precip
PM2.5 at 14.7 µg/m³, PM10 at 17.1 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.86
- Wind
- breezy
- 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).
If the first of July be rainy weather, 'twill rain more or less for four weeks together.
- Moonrise
- 10:48 PM
- Moonset
- 9:55 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Central Islip at a glance
- Today vs. normal: 25°F above the seasonal normal for this latitude
- 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: 11722
16-Day Forecast — Central Islip
- Sat98°77°35%
- Sun86°71°43%
- Mon72°68°85%
- Tue70°63°82%
- Wed79°63°22%
- Thu88°68°10%
- Fri93°72°41%
- Sat92°75°38%
- Sun88°72°19%
- Mon74°67°18%
- Tue79°66°21%
- Wed87°65°25%
- Thu91°73°45%
- Fri95°72°35%
- Sat92°76°27%
- Sun94°78°42%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of July 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 — Central Islip
SPC has placed Central Islip in the Slight Risk category for severe thunderstorms today.
- TODAYSLGTSlight Risk
- TOMORROWMRGLMarginal Risk
- DAY 3TSTMGeneral Thunderstorms
Scattered severe storms possible. A few tornadoes, hail, and damaging wind gusts possible.
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.
Beaches near Central Islip
- Robert Moses Beach11.7 mi
- Jones Beach20.9 mi
- Long Beach NY27.8 mi
Each linked page shows live water temperature, wave height, swim and surf verdicts, tides, and rip-current risk from NDBC + NOAA + NWS data.
ZIP codes in Central Islip
- 11722
- 11752