Hartford, Wisconsin Weather
Cicadas claim the afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Hartford weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Overcast20%—81°68°—
- SundayJul 5Overcast11%—82°62°+1°
- MondayJul 6Overcast——78°60°-4°
- TuesdayJul 7Overcast——79°55°+1°
- WednesdayJul 8Light Showers37%—80°59°+1°
- ThursdayJul 9Heavy Showers51%0.36″69°61°-11°
- FridayJul 10Mostly Clear22%—80°58°+11°
AQI 31 (Good), driven by Ozone. AQI flat over the last 6 hours (within ±3 points). Ozone at AQI 36. Overcast through the UV peak window (cloud cover ~100%) — afternoon ozone should stay flat.
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 36. Overcast through the UV peak window (cloud cover ~100%) — afternoon ozone should stay flat.
- Present
- AQI 36
- UV peak
- 5.9 at 1 PM
- Sky at peak
- overcast
- Projected peak
- AQI 14
PM × Wind × Precip
PM2.5 at 5.7 µg/m³, PM10 at 7.0 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.81
- Wind
- light
- 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
- 10:53 PM
- Moonset
- 9:56 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Hartford at a glance
- Today vs. normal: 11°F above the seasonal normal for this latitude
- Last frost: May 6 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 53027
16-Day Forecast — Hartford
- Sat81°68°20%
- Sun82°62°11%
- Mon78°60°1%
- Tue79°55°2%
- Wed80°59°37%
- Thu69°61°51%
- Fri80°58°22%
- Sat81°61°6%
- Sun67°57°11%
- Mon74°54°10%
- Tue76°59°7%
- Wed80°61°16%
- Thu83°65°6%
- Fri84°66°16%
- Sat83°67°23%
- Sun85°66°23%
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 — Hartford
SPC includes Hartford 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 Hartford
- 53027