Fairfield, Iowa Weather
Cicadas claim the afternoon. Day 15 of summer. Read this microseason across nine climate regions →
Fairfield weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 5Overcast10%—85°71°—
- MondayJul 6Clear——87°67°+2°
- TuesdayJul 7Overcast——83°66°-4°
- WednesdayJul 8Overcast——85°67°+2°
- ThursdayJul 9Heavy Showers40%1.1″80°69°-5°
- FridayJul 10Drizzle32%—81°67°+1°
- SaturdayJul 11Light Showers23%0.01″76°69°-5°
AQI 34 (Good), driven by Ozone. AQI up 8 over the last 6 hours (gradual rise). Ozone at AQI 43 — peak already passed at 1 PM under overcast skies. Levels should ease through evening.
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 43 — peak already passed at 1 PM under overcast skies. Levels should ease through evening.
- Present
- AQI 43
- UV peak
- 3.0 at earlier today
- Sky at peak
- overcast
- Projected peak
- AQI 43
PM × Wind × Precip
PM2.5 at 5.4 µg/m³, PM10 at 6.4 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.84
- 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
- 11:27 PM
- Moonset
- 11:20 AM
- In sign
- ♓︎ Pisces
Cicadas claim the afternoon
Fairfield at a glance
- Today vs. normal: 12°F above the seasonal normal for this latitude
- Last frost: April 22 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP codes: 52556, 52557
16-Day Forecast — Fairfield
- Sun85°71°10%
- Mon87°66°1%
- Tue83°66°0%
- Wed85°67°3%
- Thu80°69°40%
- Fri81°67°32%
- Sat76°69°23%
- Sun85°67°7%
- Mon76°65°3%
- Tue75°58°3%
- Wed77°61°10%
- Thu78°62°26%
- Fri81°64°23%
- Sat85°67°20%
- Sun88°70°23%
- Mon89°71°26%
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 — Fairfield
SPC includes Fairfield in the general thunderstorm area today — no severe risk, but storms are possible.
- TODAYTSTMGeneral Thunderstorms
- TOMORROWNONENo severe risk
- 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 Fairfield
- 52556
- 52557