Markesan, Wisconsin Weather
Fireflies rise from the lawn. Day 76 of spring. Read this microseason across nine climate regions →
Markesan weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 3Overcast——80°45°—
- ThursdayJun 4Overcast15%—84°53°+4°
- FridayJun 5Showers82%0.06″73°65°-11°
- SaturdayJun 6Light Showers58%0.08″73°62°0°
- SundayJun 7Overcast——78°56°+5°
- MondayJun 8Light Drizzle15%0.01″76°57°-2°
- TuesdayJun 9Light Drizzle25%—78°65°+2°
Ozone at AQI 78 now. AQI up 12 over the last 6 hours (gradual rise). With UV 7.6 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 79 by mid-afternoon.
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 78 now. With UV 7.6 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 79 by mid-afternoon.
- Present
- AQI 78
- UV peak
- 7.6 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 79
PM × Wind × Precip
PM2.5 at 4.9 µg/m³ (AQI 27) with a 0.98 fine-to-coarse ratio and 6 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.98
- 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
- 4:02 AM
- Moonset
- 12:40 PM
- In sign
- ♑︎ Capricorn
Fireflies rise from the lawn
Markesan at a glance
- Today vs. normal: 8°F above the seasonal normal for this latitude
- Last frost: May 8 (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 3, 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 — Markesan
SPC has placed Markesan in the Marginal Risk category for severe thunderstorms day after tomorrow.
- TODAYNONENo severe risk
- TOMORROWTSTMGeneral Thunderstorms
- DAY 3MRGLMarginal 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.