Mason City, Nebraska Weather
Cicadas claim the afternoon. Day 15 of summer. Read this microseason across nine climate regions →
Mason City weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Light Rain48%0.07″88°68°—
- SundayJul 5Overcast——93°64°+5°
- MondayJul 6Overcast——94°68°+1°
- TuesdayJul 7Overcast10%—94°67°0°
- WednesdayJul 8Drizzle21%—89°66°-5°
- ThursdayJul 9Drizzle28%—90°66°+1°
- FridayJul 10Light Drizzle24%—91°66°+1°
AQI 63 (Moderate), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM scrubbed by 2 hours of recent rain — PM2.5 down to 16.4 µg/m³, PM10 to 21.1 µg/m³.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.
What's driving it
Ozone × UV × Sky
Ozone at AQI 30 now. With UV 0.0 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 7 around 1 PM.
- Present
- AQI 30
- UV peak
- 0.0 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 7
PM × Wind × Precip
PM scrubbed by 2 hours of recent rain — PM2.5 down to 16.4 µg/m³, PM10 to 21.1 µg/m³.
- PM2.5/PM10
- 0.78
- Wind
- breezy
- Recent rain
- 2h in last 6h
- Pattern
- washed out
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
- 11:56 PM
- Moonset
- 11:51 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Mason City at a glance
- Today vs. normal: 69°F — typical for the season
- Last frost: April 23 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 68855
16-Day Forecast — Mason City
- Sat88°68°48%
- Sun93°64°9%
- Mon94°68°4%
- Tue94°67°10%
- Wed89°66°21%
- Thu90°66°28%
- Fri91°66°24%
- Sat86°66°9%
- Sun89°62°3%
- Mon93°66°2%
- Tue103°67°7%
- Wed105°70°7%
- Thu112°70°13%
- Fri106°76°18%
- Sat106°74°19%
- Sun92°71°17%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of July 5, 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 City
SPC has placed Mason City in the Slight Risk category for severe thunderstorms today.
- TODAYSLGTSlight Risk
- TOMORROWNONENo severe risk
- DAY 3NONENo severe risk
Scattered severe storms possible. A few tornadoes, hail, and damaging wind gusts possible.
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 City
- 68855