Chappaqua, New York Weather
Cicadas claim the afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Chappaqua weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Overcast71%—94°74°—
- SundayJul 5Rain54%0.46″86°70°-8°
- MondayJul 6Light Showers88%0.64″70°65°-16°
- TuesdayJul 7Drizzle79%0.05″66°59°-4°
- WednesdayJul 8Overcast25%—80°58°+14°
- ThursdayJul 9Overcast15%—89°65°+9°
- FridayJul 10Light Drizzle55%0.02″86°66°-3°
AQI 68 (Moderate), driven by Ozone. AQI up 30 in the last 6 hours — air quality is degrading. Ozone at AQI 70 — peak already passed at 1 PM under clear 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 70 — peak already passed at 1 PM under clear skies. Levels should ease through evening.
- Present
- AQI 70
- UV peak
- 3.9 at earlier today
- Sky at peak
- clear
- Projected peak
- AQI 70
PM × Wind × Precip
PM2.5 at 6.0 µg/m³, PM10 at 6.9 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.87
- 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
- 10:50 PM
- Moonset
- 9:57 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Chappaqua at a glance
- Today vs. normal: 23°F above the seasonal normal for this latitude
- Last frost: April 23 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 10514
16-Day Forecast — Chappaqua
- Sat94°74°71%
- Sun86°70°54%
- Mon70°65°88%
- Tue66°59°79%
- Wed80°58°25%
- Thu89°65°15%
- Fri86°66°55%
- Sat84°70°34%
- Sun82°64°27%
- Mon73°61°24%
- Tue82°62°24%
- Wed87°58°28%
- Thu87°62°41%
- Fri92°65°45%
- Sat90°69°34%
- Sun90°69°39%
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 — Chappaqua
SPC has placed Chappaqua in the Slight Risk category for severe thunderstorms today.
- TODAYSLGTSlight Risk
- TOMORROWTSTMGeneral Thunderstorms
- 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.
ZIP codes in Chappaqua
- 10514