Marengo, Iowa Weather
Prairie lightning bugs rise. Day 78 of spring. Read this microseason across nine climate regions →
Marengo weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 5Thunderstorm84%2.5″81°67°—
- SaturdayJun 6Thunderstorm37%—84°69°+3°
- SundayJun 7Light Showers64%0.01″81°69°-3°
- MondayJun 8Light Showers70%—80°68°-1°
- TuesdayJun 9Thunderstorm41%—87°69°+7°
- WednesdayJun 10Thunderstorm——90°74°+3°
- ThursdayJun 11Clear11%—88°73°-2°
AQI 46 (Good), driven by PM2.5. AQI down 8 over the last 6 hours (steady decline since this morning). PM scrubbed by 5 hours of recent rain — PM2.5 down to 5.1 µg/m³, PM10 to 5.4 µg/m³.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.
What's driving it
PM × Wind × Precip
PM scrubbed by 5 hours of recent rain — PM2.5 down to 5.1 µg/m³, PM10 to 5.4 µg/m³.
- PM2.5/PM10
- 0.94
- Wind
- light
- Recent rain
- 5h 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
- 5:13 AM
- Moonset
- 3:11 PM
- In sign
- ♒︎ Aquarius
Prairie lightning bugs rise
Marengo at a glance
- Today vs. normal: 4°F below the seasonal normal for this latitude
- Last frost: April 27 (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 — Marengo
SPC has placed Marengo in the Slight Risk category for severe thunderstorms tomorrow.
- TODAYTSTMGeneral Thunderstorms
- 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.