Onawa, Iowa Weather
Cicadas claim the afternoon. Day 15 of summer. Read this microseason across nine climate regions →
Onawa weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 5Clear——92°67°—
- MondayJul 6Overcast——94°70°+2°
- TuesdayJul 7Overcast——92°69°-2°
- WednesdayJul 8Light Drizzle33%—94°71°+2°
- ThursdayJul 9Overcast33%—86°66°-8°
- FridayJul 10Overcast12%—84°66°-2°
- SaturdayJul 11Light Drizzle——91°65°+7°
AQI 42 (Good), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 6.2 µg/m³ (AQI 34) with a 0.87 fine-to-coarse ratio and 4 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 6.2 µg/m³ (AQI 34) with a 0.87 fine-to-coarse ratio and 4 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.87
- 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).
If the first of July be rainy weather, 'twill rain more or less for four weeks together.
- Moonrise
- 11:44 PM
- Moonset
- 11:37 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Onawa at a glance
- Today vs. normal: 71°F — typical for the season
- 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: 51040
15-Day Forecast — Onawa
- Sun92°67°5%
- Mon94°70°1%
- Tue92°69°4%
- Wed94°71°33%
- Thu86°66°33%
- Fri84°66°12%
- Sat91°65°6%
- Sun93°67°5%
- Mon97°69°2%
- Tue102°73°2%
- Wed99°67°7%
- Thu106°68°11%
- Fri94°68°13%
- Sat95°67°23%
- Sun106°75°13%
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 — Onawa
SPC includes Onawa in the general thunderstorm area today — no severe risk, but storms are possible.
- TODAYTSTMGeneral Thunderstorms
- TOMORROWNONENo severe risk
- 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 Onawa
- 51040