Martinsburg, Iowa Weather
Cicadas claim the afternoon. Day 15 of summer. Read this microseason across nine climate regions →
Martinsburg weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 5Overcast11%—86°68°—
- MondayJul 6Clear——87°67°+1°
- TuesdayJul 7Light Drizzle——83°65°-4°
- WednesdayJul 8T-storm w/ Hail31%—87°66°+4°
- ThursdayJul 9Thunderstorm52%0.47″79°68°-8°
- FridayJul 10Light Drizzle27%—82°67°+3°
- SaturdayJul 11Overcast——75°64°-7°
AQI 39 (Good), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 6.5 µg/m³ (AQI 36) with a 0.90 fine-to-coarse ratio and 5 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.
What's driving it
Ozone × UV × Sky
Ozone at AQI 33 now. With UV 3.3 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 15 around 1 PM.
- Present
- AQI 33
- UV peak
- 3.3 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 15
PM × Wind × Precip
PM2.5 at 6.5 µg/m³ (AQI 36) with a 0.90 fine-to-coarse ratio and 5 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.90
- 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
- 11:21 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Martinsburg at a glance
- Today vs. normal: 72°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: 52568
15-Day Forecast — Martinsburg
- Sun86°68°11%
- Mon87°67°2%
- Tue83°65°2%
- Wed87°66°31%
- Thu79°68°52%
- Fri82°67°27%
- Sat75°64°5%
- Sun76°56°7%
- Mon82°59°6%
- Tue85°66°3%
- Wed85°70°8%
- Thu89°70°18%
- Fri89°72°19%
- Sat91°76°11%
- Sun86°65°13%
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 — Martinsburg
SPC includes Martinsburg in the general thunderstorm area today — no severe risk, but storms are possible.
- TODAYTSTMGeneral Thunderstorms
- TOMORROWTSTMGeneral Thunderstorms
- DAY 3NONENo severe risk
Thunderstorms possible. Not severe, but capable of producing lightning and brief heavy rain.
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 Martinsburg
- 52563
- 52568