St. Ansgar, Iowa Weather
Cicadas claim the afternoon. Day 15 of summer. Read this microseason across nine climate regions →
St. Ansgar weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Overcast36%—82°68°—
- SundayJul 5Overcast10%—81°64°-1°
- MondayJul 6Light Drizzle——83°65°+2°
- TuesdayJul 7Overcast——83°65°0°
- WednesdayJul 8Thunderstorm49%0.12″78°64°-5°
- ThursdayJul 9Overcast49%—73°59°-5°
- FridayJul 10Light Drizzle——80°61°+7°
AQI 44 (Good), driven by Ozone. AQI up 6 over the last 6 hours (gradual rise). Ozone at AQI 43. Overcast through the UV peak window (cloud cover ~94%) — 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 ~94%) — afternoon ozone should stay flat.
- Present
- AQI 43
- UV peak
- 0.3 at 1 PM
- Sky at peak
- overcast
- Projected peak
- AQI 5
PM × Wind × Precip
PM2.5 at 7.3 µg/m³ (AQI 41) with a 0.79 fine-to-coarse ratio and 3 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.79
- 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
- 11:33 PM
- Moonset
- 11:23 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
St. Ansgar at a glance
- Today vs. normal: 8°F above the seasonal normal for this latitude
- Last frost: May 6 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
16-Day Forecast — St. Ansgar
- Sat82°68°36%
- Sun81°64°10%
- Mon83°65°4%
- Tue83°65°9%
- Wed78°64°49%
- Thu73°59°49%
- Fri80°61°6%
- Sat74°60°10%
- Sun74°54°9%
- Mon82°60°9%
- Tue81°65°4%
- Wed81°62°16%
- Thu83°69°29%
- Fri91°72°29%
- Sat84°64°21%
- Sun76°60°26%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of July 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 — St. Ansgar
SPC includes St. Ansgar 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 St. Ansgar
- 50472
- 50481