Promise City, Iowa Weather
Fireflies pulse through the magnolias. Day 78 of spring. Read this microseason across nine climate regions →
Promise City weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 4Overcast47%—83°60°—
- FridayJun 5Thunderstorm81%2.2″82°67°-1°
- SaturdayJun 6Thunderstorm34%—82°69°0°
- SundayJun 7Light Showers71%—76°65°-6°
- MondayJun 8Thunderstorm59%0.03″84°67°+8°
- TuesdayJun 9Thunderstorm38%—87°72°+3°
- WednesdayJun 10Thunderstorm13%—88°72°+1°
PM scrubbed by 2 hours of recent rain — PM2.5 down to 7.4 µg/m³, PM10 to 8.0 µg/m³. AQI up 8 over the last 6 hours (gradual rise).
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 ~100%) — afternoon ozone should stay flat.
- Present
- AQI 40
- UV peak
- 0.1 at 1 PM
- Sky at peak
- overcast
- Projected peak
- AQI 5
PM × Wind × Precip
PM scrubbed by 2 hours of recent rain — PM2.5 down to 7.4 µg/m³, PM10 to 8.0 µg/m³.
- PM2.5/PM10
- 0.93
- Wind
- breezy
- Recent rain
- 2h in last 6h
- Pattern
- washed out
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).
The higher the clouds, the finer the weather.
- Moonrise
- 5:15 AM
- Moonset
- 3:18 PM
- In sign
- ♒︎ Aquarius
Fireflies pulse through the magnolias
Promise City at a glance
- Today vs. normal: 74°F — typical for the season
- Last frost: April 20 (climatological average for this latitude)
- Microseason: Jun 1–5
- Planting window: Harvest spring lettuce before it bolts. Sow heat-tolerant greens.
Right now in the garden
Peak growing season
As of June 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 — Promise City
SPC has placed Promise City in the Slight Risk category for severe thunderstorms tomorrow.
- TODAYMRGLMarginal Risk
- TOMORROWSLGTSlight Risk
- DAY 3TSTMGeneral Thunderstorms
Scattered severe storms possible. A few tornadoes, hail, and damaging wind gusts possible.
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.