Ottumwa, Iowa Weather
Toward the solstice glow. Day 88 of spring. Read this microseason across nine climate regions →
Ottumwa weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 15Overcast——79°53°—
- TuesdayJun 16Overcast17%—75°57°-4°
- WednesdayJun 17T-storm w/ Hvy Hail84%—84°61°+9°
- ThursdayJun 18Light Drizzle11%—71°55°-13°
- FridayJun 19Overcast——74°48°+3°
- SaturdayJun 20Drizzle32%0.07″74°63°0°
- SundayJun 21Light Drizzle46%0.01″70°60°-4°
AQI 28 (Good), driven by PM2.5. AQI flat over the last 6 hours (within ±4 points). PM2.5 at 4.9 µg/m³ (AQI 27) with a 0.98 fine-to-coarse ratio and 3 mph wind — combustion smoke trapped in calm air, not road dust.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.
What's driving it
PM × Wind × Precip
PM2.5 at 4.9 µg/m³ (AQI 27) with a 0.98 fine-to-coarse ratio and 3 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.98
- 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).
A summer fog for fair, a winter fog for rain.
- Moonrise
- 5:39 AM
- Moonset
- 9:02 PM
- In sign
- ♊︎ Gemini
Toward the solstice glow
Ottumwa at a glance
- Today vs. normal: 21°F below the seasonal normal for this latitude
- Last frost: April 22 (climatological average for this latitude)
- Microseason: Jun 11–15
- Planting window: Stake and prune tomato suckers. Watch for squash vine borers.
15-Day Forecast — Ottumwa
- Mon79°53°1%
- Tue75°57°17%
- Wed84°61°84%
- Thu71°55°11%
- Fri74°48°1%
- Sat74°63°32%
- Sun70°60°46%
- Mon73°53°35%
- Tue71°61°12%
- Wed80°62°11%
- Thu87°70°15%
- Fri88°73°29%
- Sat89°73°24%
- Sun90°76°29%
- Mon81°71°23%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of June 15, 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 — Ottumwa
SPC has placed Ottumwa in the Slight Risk category for severe thunderstorms day after tomorrow.
- TODAYTSTMGeneral Thunderstorms
- TOMORROWTSTMGeneral Thunderstorms
- DAY 3SLGTSlight Risk
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.
ZIP codes in Ottumwa
- 52501