Hillsboro, Wisconsin Weather
Cicadas claim the afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Hillsboro weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Foggy18%—81°64°—
- SundayJul 5Overcast22%—80°65°-1°
- MondayJul 6Clear——79°61°-1°
- TuesdayJul 7Overcast——81°62°+2°
- WednesdayJul 8Thunderstorm32%0.26″79°64°-2°
- ThursdayJul 9Light Showers39%—76°64°-3°
- FridayJul 10Overcast13%—78°59°+2°
AQI 31 (Good), driven by PM2.5. AQI up 5 over the last 6 hours (gradual rise). PM2.5 at 7.9 µg/m³ (AQI 44) with a 0.85 fine-to-coarse ratio and 5 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 31. Overcast through the UV peak window (cloud cover ~81%) — afternoon ozone should stay flat.
- Present
- AQI 31
- UV peak
- 3.6 at 1 PM
- Sky at peak
- overcast
- Projected peak
- AQI 7
PM × Wind × Precip
PM2.5 at 7.9 µg/m³ (AQI 44) with a 0.85 fine-to-coarse ratio and 5 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.85
- 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).
If the first of July be rainy weather, 'twill rain more or less for four weeks together.
- Moonrise
- 11:01 PM
- Moonset
- 10:03 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Hillsboro at a glance
- Today vs. normal: 3°F above the seasonal normal for this latitude
- Last frost: May 8 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 54634
16-Day Forecast — Hillsboro
- Sat81°64°18%
- Sun80°65°22%
- Mon79°61°1%
- Tue81°62°4%
- Wed79°64°32%
- Thu76°64°39%
- Fri78°59°13%
- Sat80°62°12%
- Sun71°58°12%
- Mon76°53°15%
- Tue78°60°13%
- Wed79°61°19%
- Thu77°68°19%
- Fri83°67°20%
- Sat83°69°26%
- Sun84°70°35%
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 — Hillsboro
SPC includes Hillsboro in the general thunderstorm area today — no severe risk, but storms are possible.
- TODAYTSTMGeneral Thunderstorms
- TOMORROWTSTMGeneral Thunderstorms
- DAY 3NONENo severe risk
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 Hillsboro
- 54634