Cornell, Wisconsin Weather
Cicadas claim the afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Cornell weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Overcast33%—84°64°—
- SundayJul 5Overcast17%—83°66°-1°
- MondayJul 6Overcast——80°62°-3°
- TuesdayJul 7Thunderstorm13%—80°64°0°
- WednesdayJul 8Heavy Showers59%1.4″70°61°-10°
- ThursdayJul 9Overcast59%—78°56°+8°
- FridayJul 10Drizzle10%0.09″72°58°-6°
AQI 39 (Good), driven by PM2.5. AQI flat over the last 6 hours (within ±4 points). PM2.5 at 10.3 µg/m³ (AQI 53) with a 0.77 fine-to-coarse ratio and 3 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 43 now. With UV 6.6 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 38 around 1 PM.
- Present
- AQI 43
- UV peak
- 6.6 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 38
PM × Wind × Precip
PM2.5 at 10.3 µg/m³ (AQI 53) with a 0.77 fine-to-coarse ratio and 3 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.77
- 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
- 11:07 PM
- Moonset
- 10:05 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Cornell at a glance
- Today vs. normal: 15°F above the seasonal normal for this latitude
- Last frost: May 17 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 54732
16-Day Forecast — Cornell
- Sat84°64°33%
- Sun83°66°17%
- Mon80°62°5%
- Tue80°64°13%
- Wed70°61°59%
- Thu78°56°59%
- Fri72°58°10%
- Sat74°52°13%
- Sun77°53°13%
- Mon75°53°8%
- Tue79°61°7%
- Wed80°63°16%
- Thu78°65°16%
- Fri75°60°13%
- Sat67°57°27%
- Sun78°52°27%
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 — Cornell
SPC includes Cornell in the general thunderstorm area today — no severe risk, but storms are possible.
- TODAYTSTMGeneral Thunderstorms
- 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.
ZIP codes in Cornell
- 54732