Gahanna, Ohio Weather
Cicadas claim the scorching afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Gahanna weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Overcast26%—94°73°—
- SundayJul 5Showers74%0.11″87°74°-7°
- MondayJul 6Thunderstorm36%—81°68°-6°
- TuesdayJul 7Light Drizzle16%—80°65°-1°
- WednesdayJul 8Overcast18%—87°66°+7°
- ThursdayJul 9Thunderstorm49%—85°68°-2°
- FridayJul 10Light Drizzle49%—77°70°-8°
AQI 35 (Good), driven by PM2.5. AQI down 8 over the last 6 hours (gradual decline). PM2.5 at 7.2 µg/m³ (AQI 40) with a 0.90 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 during the projected peak around 7 PM.
What's driving it
Ozone × UV × Sky
Ozone at AQI 38 now. With UV 3.8 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 19 around 1 PM.
- Present
- AQI 38
- UV peak
- 3.8 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 19
PM × Wind × Precip
PM2.5 at 7.2 µg/m³ (AQI 40) with a 0.90 fine-to-coarse ratio and 4 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.90
- 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
- 11:26 PM
- Moonset
- 10:36 AM
- In sign
- ♓︎ Pisces
Cicadas claim the scorching afternoon
Gahanna at a glance
- Today vs. normal: 9°F above the seasonal normal for this latitude
- Last frost: April 16 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
16-Day Forecast — Gahanna
- Sat94°73°26%
- Sun87°74°74%
- Mon81°68°36%
- Tue80°65°16%
- Wed87°66°18%
- Thu85°68°49%
- Fri77°70°49%
- Sat87°68°38%
- Sun74°64°28%
- Mon66°58°12%
- Tue78°62°14%
- Wed85°65°23%
- Thu86°68°27%
- Fri87°70°26%
- Sat86°69°45%
- Sun88°71°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 — Gahanna
SPC has placed Gahanna 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 Gahanna
- 43230