Oconomowoc, Wisconsin Weather
Fireflies rise from the lawn. Day 78 of spring. Read this microseason across nine climate regions →
Oconomowoc weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 5Drizzle93%0.05″76°66°—
- SaturdayJun 6Light Rain25%0.06″86°63°+10°
- SundayJun 7Light Drizzle——75°58°-11°
- MondayJun 8Light Rain54%0.16″73°63°-2°
- TuesdayJun 9Light Drizzle48%—78°64°+5°
- WednesdayJun 10Thunderstorm34%—87°62°+9°
- ThursdayJun 11Thunderstorm——89°74°+2°
AQI 50 (Good), driven by Ozone. AQI down 36 over the last 6 hours — air quality is improving sharply. Ozone at AQI 46. Overcast through the UV peak window (cloud cover ~98%) — 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 46. Overcast through the UV peak window (cloud cover ~98%) — afternoon ozone should stay flat.
- Present
- AQI 46
- UV peak
- 3.3 at 1 PM
- Sky at peak
- overcast
- Projected peak
- AQI 10
PM × Wind × Precip
PM2.5 at 7.3 µg/m³ (AQI 41) with a 0.88 fine-to-coarse ratio and 5 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.88
- 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).
The higher the clouds, the finer the weather.
- Moonrise
- 5:02 AM
- Moonset
- 2:53 PM
- In sign
- ♒︎ Aquarius
Fireflies rise from the lawn
Oconomowoc at a glance
- Today vs. normal: 5°F below the seasonal normal for this latitude
- Last frost: May 5 (climatological average for this latitude)
- Microseason: Jun 1–5
- Planting window: Harvest spring lettuce before it bolts. Sow heat-tolerant greens.
Right now in the garden
Peak growing season
As of June 5, 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 — Oconomowoc
SPC has placed Oconomowoc in the Marginal Risk category for severe thunderstorms today.
- TODAYMRGLMarginal Risk
- TOMORROWTSTMGeneral Thunderstorms
- DAY 3NONENo severe risk
Isolated severe storms possible. Limited threat for hail or damaging wind.
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.