Delta, Iowa Weather
Cicadas claim the afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Delta weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Heavy Drizzle56%0.05″87°68°—
- SundayJul 5Light Drizzle20%—87°70°0°
- MondayJul 6Overcast——81°67°-6°
- TuesdayJul 7Overcast——82°63°+1°
- WednesdayJul 8T-storm w/ Hail23%—86°65°+4°
- ThursdayJul 9Thunderstorm34%—81°69°-5°
- FridayJul 10Light Drizzle24%—81°67°0°
AQI 34 (Good), driven by Ozone. AQI up 6 over the last 6 hours (gradual rise). Ozone at AQI 45 — peak already passed at 1 PM under clear skies. Levels should ease through evening.
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 45 — peak already passed at 1 PM under clear skies. Levels should ease through evening.
- Present
- AQI 45
- UV peak
- 4.3 at earlier today
- Sky at peak
- clear
- Projected peak
- AQI 45
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
- 11:06 PM
- Moonset
- 10:14 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Delta at a glance
- Today vs. normal: 17°F above the seasonal normal for this latitude
- Last frost: April 24 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 52550
16-Day Forecast — Delta
- Sat87°68°56%
- Sun87°70°20%
- Mon81°67°3%
- Tue82°63°1%
- Wed86°65°23%
- Thu81°69°34%
- Fri81°67°24%
- Sat73°60°7%
- Sun76°58°9%
- Mon77°58°7%
- Tue78°59°9%
- Wed79°58°32%
- Thu82°64°19%
- Fri82°68°23%
- Sat78°62°20%
- Sun74°59°18%
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 — Delta
SPC includes Delta 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 Delta
- 52550