Waukesha, Wisconsin Weather
Cicadas claim the afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Waukesha weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Heavy Rain38%0.79″81°65°—
- SundayJul 5Overcast——80°62°-1°
- MondayJul 6Overcast——76°60°-4°
- TuesdayJul 7Overcast——80°57°+4°
- WednesdayJul 8Showers24%0.02″80°62°0°
- ThursdayJul 9Drizzle49%—74°63°-6°
- FridayJul 10Light Drizzle33%—79°59°+5°
AQI 31 (Good), driven by Ozone. AQI flat over the last 6 hours (within ±3 points). Ozone at AQI 43. 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.
What's driving it
Ozone × UV × Sky
Ozone at AQI 43. Overcast through the UV peak window (cloud cover ~100%) — afternoon ozone should stay flat.
- Present
- AQI 43
- UV peak
- 6.0 at 1 PM
- Sky at peak
- overcast
- Projected peak
- AQI 17
PM × Wind × Precip
PM scrubbed by 2 hours of recent rain — PM2.5 down to 6.4 µg/m³, PM10 to 7.7 µg/m³.
- PM2.5/PM10
- 0.83
- Wind
- calm
- Recent rain
- 2h in last 6h
- Pattern
- washed out
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
- 10:52 PM
- Moonset
- 9:55 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Waukesha at a glance
- Today vs. normal: 13°F above the seasonal normal for this latitude
- Last frost: May 4 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP codes: 53186, 53188, 53189
16-Day Forecast — Waukesha
- Sat81°65°38%
- Sun80°62°5%
- Mon76°60°0%
- Tue80°57°2%
- Wed80°62°24%
- Thu74°63°49%
- Fri79°59°33%
- Sat75°57°8%
- Sun76°55°12%
- Mon73°53°9%
- Tue79°56°8%
- Wed77°62°23%
- Thu81°62°14%
- Fri79°67°14%
- Sat76°60°23%
- Sun74°54°29%
Forecast data from Open-Meteo (CC BY 4.0).
Live wind & temperature near Waukesha
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 — Waukesha
SPC includes Waukesha 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 Waukesha
- 53186
- 53188
- 53189
- 53187