Mason, Ohio Weather
Cicadas claim the scorching afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Mason weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Mostly Clear24%—93°73°—
- SundayJul 5Overcast56%—87°71°-6°
- MondayJul 6Thunderstorm56%—82°69°-5°
- TuesdayJul 7Light Drizzle13%—81°63°-1°
- WednesdayJul 8Partly Cloudy——86°65°+5°
- ThursdayJul 9Light Drizzle40%—86°66°0°
- FridayJul 10Light Drizzle58%—80°70°-6°
AQI 57 (Moderate), driven by Ozone. Ozone at AQI 122 now. With UV 6.1 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 100 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 10 PM.
What's driving it
Ozone × UV × Sky
Ozone at AQI 122 now. With UV 6.1 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 100 around 1 PM.
- Present
- AQI 122
- UV peak
- 6.1 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 100
PM × Wind × Precip
PM2.5 at 15.1 µg/m³, PM10 at 16.9 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.89
- 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
- 10:43 AM
- In sign
- ♓︎ Pisces
Cicadas claim the scorching afternoon
Mason at a glance
- Today vs. normal: 14°F above the seasonal normal for this latitude
- Last frost: April 12 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 45040
16-Day Forecast — Mason
- Sat93°73°24%
- Sun87°71°56%
- Mon82°69°56%
- Tue81°63°13%
- Wed86°65°7%
- Thu86°66°40%
- Fri80°70°58%
- Sat84°68°44%
- Sun78°62°16%
- Mon71°55°13%
- Tue75°61°15%
- Wed83°63°23%
- Thu86°66°19%
- Fri86°70°19%
- Sat86°68°26%
- Sun88°70°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 — Mason
SPC has placed Mason 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 Mason
- 45040