Keystone, Iowa Weather
Cicadas claim the afternoon. Day 15 of summer. Read this microseason across nine climate regions →
Keystone weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Light Rain77%0.17″84°66°—
- SundayJul 5Overcast——83°66°-1°
- MondayJul 6Overcast——81°65°-2°
- TuesdayJul 7Overcast——82°65°+1°
- WednesdayJul 8T-storm w/ Hail40%—84°66°+2°
- ThursdayJul 9Light Showers49%—74°64°-10°
- FridayJul 10Overcast10%—79°65°+5°
AQI 41 (Good), driven by Ozone. AQI up 14 over the last 6 hours (gradual rise). Ozone at AQI 40. Overcast through the UV peak window (cloud cover ~74%) — 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 40. Overcast through the UV peak window (cloud cover ~74%) — afternoon ozone should stay flat.
- Present
- AQI 40
- UV peak
- 0.1 at 1 PM
- Sky at peak
- overcast
- Projected peak
- AQI 5
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
- 11:29 PM
- Moonset
- 11:20 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Keystone at a glance
- Today vs. normal: 5°F above the seasonal normal for this latitude
- Last frost: April 28 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 52249
16-Day Forecast — Keystone
- Sat84°66°77%
- Sun83°66°8%
- Mon81°65°4%
- Tue82°65°3%
- Wed84°66°40%
- Thu74°64°49%
- Fri79°65°10%
- Sat75°63°9%
- Sun75°56°9%
- Mon81°59°6%
- Tue85°68°5%
- Wed85°66°26%
- Thu83°68°19%
- Fri87°73°20%
- Sat87°75°20%
- Sun81°62°24%
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 — Keystone
SPC includes Keystone 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 Keystone
- 52249