Ansonia, Ohio Weather
Cicadas claim the scorching afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Ansonia weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Light Drizzle34%—90°72°—
- SundayJul 5Light Drizzle68%0.02″83°70°-7°
- MondayJul 6Light Drizzle36%—80°66°-3°
- TuesdayJul 7Light Drizzle10%—78°62°-2°
- WednesdayJul 8Overcast14%—83°63°+5°
- ThursdayJul 9Light Drizzle43%—81°66°-2°
- FridayJul 10Light Drizzle52%—77°69°-4°
AQI 32 (Good), driven by PM2.5. AQI down 12 over the last 6 hours (gradual decline). PM2.5 at 9.6 µg/m³, PM10 at 11.1 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 7 PM.
What's driving it
Ozone × UV × Sky
Ozone at AQI 33 now. With UV 3.6 peaking around 1 PM under partly cloudy skies, surface ozone likely climbs to AQI 11 around 1 PM.
- Present
- AQI 33
- UV peak
- 3.6 at 1 PM
- Sky at peak
- partly cloudy
- Projected peak
- AQI 11
PM × Wind × Precip
PM2.5 at 9.6 µg/m³, PM10 at 11.1 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.86
- 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
- 11:33 PM
- Moonset
- 10:43 AM
- In sign
- ♓︎ Pisces
Cicadas claim the scorching afternoon
Ansonia at a glance
- Today vs. normal: 9°F above the seasonal normal for this latitude
- Last frost: April 17 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 45303
16-Day Forecast — Ansonia
- Sat90°72°34%
- Sun83°70°68%
- Mon80°66°36%
- Tue78°62°10%
- Wed83°63°14%
- Thu81°66°43%
- Fri77°69°52%
- Sat85°66°23%
- Sun73°60°21%
- Mon70°60°10%
- Tue74°59°13%
- Wed81°61°35%
- Thu83°66°23%
- Fri80°69°20%
- Sat84°67°35%
- Sun87°69°32%
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 — Ansonia
SPC has placed Ansonia 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 Ansonia
- 45303