West Islip, New York Weather
Fireflies rise from the lawn. Day 78 of spring. Read this microseason across nine climate regions →
West Islip weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 4Partly Cloudy——75°55°—
- FridayJun 5Overcast——85°58°+10°
- SaturdayJun 6Light Showers40%—81°60°-4°
- SundayJun 7Showers40%0.54″81°66°0°
- MondayJun 8Overcast——73°59°-8°
- TuesdayJun 9Overcast——81°64°+8°
- WednesdayJun 10Mostly Clear10%—78°66°-3°
AQI 90 (Moderate), driven by PM2.5. AQI up 39 in the last 6 hours — air quality is degrading. PM2.5 at 11.9 µg/m³ (AQI 56) with a 0.71 fine-to-coarse ratio and 6 mph wind — combustion smoke trapped in calm air, not road dust.
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 50. Overcast through the UV peak window (cloud cover ~61%) — afternoon ozone should stay flat.
- Present
- AQI 50
- UV peak
- 0.0 at 1 PM
- Sky at peak
- overcast
- Projected peak
- AQI 6
PM × Wind × Precip
PM2.5 at 11.9 µg/m³ (AQI 56) with a 0.71 fine-to-coarse ratio and 6 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.71
- Wind
- light
- 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
- 3:54 AM
- Moonset
- 1:56 PM
- In sign
- ♒︎ Aquarius
Fireflies rise from the lawn
West Islip at a glance
- Today vs. normal: 13°F below the seasonal normal for this latitude
- Last frost: April 20 (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 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 — West Islip
SPC has placed West Islip in the General Thunderstorms category for severe thunderstorms day after tomorrow.
- TODAYNONENo severe risk
- TOMORROWNONENo severe risk
- DAY 3TSTMGeneral Thunderstorms
Thunderstorms possible. Not severe, but capable of producing lightning and brief heavy rain.
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 West Islip
- Robert Moses Beach5.8 mi
- Jones Beach Beach13.4 mi
- Long Beach NY Beach20.6 mi
Each linked page shows live water temperature, wave height, swim and surf verdicts, tides, and rip-current risk from NDBC + NOAA + NWS data.