Castalia, Ohio Weather
Cicadas claim the afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Castalia weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Overcast28%—87°72°—
- SundayJul 5Showers34%0.41″81°71°-6°
- MondayJul 6Light Drizzle30%—76°70°-5°
- TuesdayJul 7Light Drizzle—0.01″77°70°+1°
- WednesdayJul 8Partly Cloudy——86°64°+9°
- ThursdayJul 9Light Drizzle36%—81°67°-5°
- FridayJul 10Light Drizzle31%—77°70°-4°
AQI 45 (Good), driven by Ozone. AQI down 10 over the last 6 hours (gradual decline). Ozone at AQI 68 now. With UV 4.9 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 45 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 68 now. With UV 4.9 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 45 around 1 PM.
- Present
- AQI 68
- UV peak
- 4.9 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 45
PM × Wind × Precip
PM2.5 at 8.4 µg/m³ (AQI 47) with a 0.94 fine-to-coarse ratio and 5 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.94
- 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
- 11:28 PM
- Moonset
- 10:34 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Castalia 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: 44824
16-Day Forecast — Castalia
- Sat87°72°28%
- Sun81°71°34%
- Mon76°70°30%
- Tue77°70°9%
- Wed86°64°8%
- Thu81°67°36%
- Fri77°70°31%
- Sat83°70°24%
- Sun77°64°22%
- Mon65°61°13%
- Tue77°60°15%
- Wed84°65°26%
- Thu86°69°30%
- Fri86°70°19%
- Sat85°68°26%
- Sun85°69°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 — Castalia
SPC has placed Castalia 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 Castalia
- 44824