Potosi, Wisconsin Weather
Cicadas claim the afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Potosi weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Drizzle45%0.05″85°67°—
- SundayJul 5Foggy14%—84°68°-1°
- MondayJul 6Clear——79°63°-5°
- TuesdayJul 7Overcast——81°59°+2°
- WednesdayJul 8T-storm w/ Hail34%—81°64°0°
- ThursdayJul 9Drizzle42%—77°66°-4°
- FridayJul 10Light Drizzle13%—81°63°+4°
AQI 31 (Good), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 7.6 µg/m³ (AQI 42) with a 0.78 fine-to-coarse ratio and 1 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 41 now. With UV 6.0 peaking around 1 PM under partly cloudy skies, surface ozone likely climbs to AQI 23 around 1 PM.
- Present
- AQI 41
- UV peak
- 6.0 at 1 PM
- Sky at peak
- partly cloudy
- Projected peak
- AQI 23
PM × Wind × Precip
PM2.5 at 7.6 µg/m³ (AQI 42) with a 0.78 fine-to-coarse ratio and 1 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.78
- Wind
- calm
- 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
- 10:06 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Potosi at a glance
- Today vs. normal: 12°F above the seasonal normal for this latitude
- Last frost: May 2 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 53820
16-Day Forecast — Potosi
- Sat85°67°45%
- Sun84°68°14%
- Mon79°63°1%
- Tue81°59°4%
- Wed81°64°34%
- Thu77°66°42%
- Fri81°63°13%
- Sat76°58°10%
- Sun77°56°10%
- Mon76°56°9%
- Tue80°59°8%
- Wed78°59°19%
- Thu82°63°11%
- Fri79°65°23%
- Sat77°59°23%
- Sun75°56°33%
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 — Potosi
SPC includes Potosi 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 Potosi
- 53820