Defiance, Ohio Weather
Cicadas claim the afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Defiance weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Light Drizzle41%0.02″90°71°—
- SundayJul 5Rain33%0.28″80°71°-10°
- MondayJul 6Overcast25%—81°67°+1°
- TuesdayJul 7Mostly Clear——83°61°+2°
- WednesdayJul 8Overcast——85°63°+2°
- ThursdayJul 9Thunderstorm31%—80°66°-5°
- FridayJul 10Light Drizzle35%—78°68°-2°
AQI 37 (Good), driven by Ozone. AQI down 8 over the last 6 hours (gradual decline). Ozone at AQI 51 now. With UV 4.9 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 34 around 1 PM.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion during the projected peak around 8 PM.
What's driving it
Ozone × UV × Sky
Ozone at AQI 51 now. With UV 4.9 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 34 around 1 PM.
- Present
- AQI 51
- UV peak
- 4.9 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 34
PM × Wind × Precip
PM2.5 at 7.8 µg/m³ (AQI 43) with a 0.93 fine-to-coarse ratio and 5 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.93
- Wind
- light
- 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
- 11:34 PM
- Moonset
- 10:41 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Defiance at a glance
- Today vs. normal: 11°F above the seasonal normal for this latitude
- Last frost: April 24 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 43512
16-Day Forecast — Defiance
- Sat90°71°41%
- Sun80°71°33%
- Mon81°67°25%
- Tue83°61°5%
- Wed85°63°8%
- Thu80°66°31%
- Fri78°68°35%
- Sat83°65°21%
- Sun74°60°19%
- Mon65°60°9%
- Tue74°62°12%
- Wed84°63°35%
- Thu86°67°29%
- Fri84°69°23%
- Sat85°67°27%
- Sun88°69°26%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of July 4, 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 — Defiance
SPC has placed Defiance in the Marginal Risk category for severe thunderstorms today.
- TODAYMRGLMarginal Risk
- TOMORROWTSTMGeneral Thunderstorms
- DAY 3TSTMGeneral Thunderstorms
Isolated severe storms possible. Limited threat for hail or damaging wind.
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 Defiance
- 43512