Vandalia, Ohio Weather
Cicadas claim the scorching afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Vandalia weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Overcast23%—91°73°—
- SundayJul 5Rain36%0.14″88°71°-3°
- MondayJul 6Light Drizzle36%—80°67°-8°
- TuesdayJul 7Light Drizzle——80°63°0°
- WednesdayJul 8Mostly Clear17%—84°64°+4°
- ThursdayJul 9Thunderstorm39%—82°66°-2°
- FridayJul 10Thunderstorm53%—79°70°-3°
AQI 40 (Good), driven by PM2.5. AQI projected to climb to 61 over the next 6 hours. PM2.5 at 11.3 µg/m³, PM10 at 13.5 µg/m³ — typical background levels with no transport signature.
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 49 now. With UV 5.5 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 36 around 1 PM.
- Present
- AQI 49
- UV peak
- 5.5 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 36
PM × Wind × Precip
PM2.5 at 11.3 µg/m³, PM10 at 13.5 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.84
- Wind
- light
- Recent rain
- 0h in last 6h
- Pattern
- background
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
- 11:31 PM
- Moonset
- 10:42 AM
- In sign
- ♓︎ Pisces
Cicadas claim the scorching afternoon
Vandalia at a glance
- Today vs. normal: 11°F above the seasonal normal for this latitude
- Last frost: April 15 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 45377
16-Day Forecast — Vandalia
- Sat91°73°23%
- Sun88°71°36%
- Mon80°67°36%
- Tue80°63°9%
- Wed84°64°17%
- Thu82°66°39%
- Fri79°70°53%
- Sat84°66°27%
- Sun75°61°22%
- Mon68°56°11%
- Tue73°60°13%
- Wed83°62°32%
- Thu84°66°24%
- Fri84°69°19%
- Sat85°67°35%
- Sun87°70°29%
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 — Vandalia
SPC has placed Vandalia 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 Vandalia
- 45414
- 45377