Altoona, Wisconsin Weather
Cicadas claim the afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Altoona weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Light Drizzle33%0.02″85°64°—
- SundayJul 5Heavy Rain20%0.38″83°67°-2°
- MondayJul 6Partly Cloudy——81°64°-2°
- TuesdayJul 7Light Drizzle——83°65°+2°
- WednesdayJul 8Thunderstorm57%0.35″75°68°-8°
- ThursdayJul 9Overcast57%—79°62°+4°
- FridayJul 10Light Drizzle——79°61°0°
AQI 37 (Good), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 12.0 µg/m³ (AQI 56) with a 0.76 fine-to-coarse ratio and 3 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 during the projected peak around 10 PM.
What's driving it
Ozone × UV × Sky
Ozone at AQI 36 now. With UV 5.5 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 26 around 1 PM.
- Present
- AQI 36
- UV peak
- 5.5 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 26
PM × Wind × Precip
PM2.5 at 12.0 µg/m³ (AQI 56) with a 0.76 fine-to-coarse ratio and 3 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.76
- 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
- 11:08 PM
- Moonset
- 10:06 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Altoona at a glance
- Today vs. normal: 9°F above the seasonal normal for this latitude
- Last frost: May 15 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 54720
16-Day Forecast — Altoona
- Sat85°64°33%
- Sun83°67°20%
- Mon81°64°5%
- Tue83°65°8%
- Wed75°68°57%
- Thu79°62°57%
- Fri79°61°9%
- Sat77°62°11%
- Sun73°57°15%
- Mon77°52°8%
- Tue78°60°8%
- Wed79°63°16%
- Thu83°60°16%
- Fri86°67°14%
- Sat85°70°29%
- Sun84°71°29%
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 — Altoona
SPC includes Altoona in the general thunderstorm area today — no severe risk, but storms are possible.
- TODAYTSTMGeneral Thunderstorms
- TOMORROWTSTMGeneral Thunderstorms
- DAY 3TSTMGeneral Thunderstorms
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 Altoona
- 54720
- 54701