Foster, Missouri Weather
Cicadas claim the scorching afternoon. Day 14 of summer. Read this microseason across nine climate regions →
Foster weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Heavy Rain37%0.48″90°72°—
- SundayJul 5Light Drizzle21%0.02″90°69°0°
- MondayJul 6Thunderstorm16%—87°68°-3°
- TuesdayJul 7Light Drizzle——87°69°0°
- WednesdayJul 8Mostly Clear——89°69°+2°
- ThursdayJul 9Light Drizzle35%—90°71°+1°
- FridayJul 10Light Drizzle49%—89°75°-1°
AQI 46 (Good), driven by PM2.5. AQI up 5 over the last 6 hours (gradual rise). PM2.5 at 10.2 µg/m³ (AQI 53) with a 0.78 fine-to-coarse ratio and 6 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 46. Overcast through the UV peak window (cloud cover ~94%) — afternoon ozone should stay flat.
- Present
- AQI 46
- UV peak
- 8.0 at 1 PM
- Sky at peak
- overcast
- Projected peak
- AQI 24
PM × Wind × Precip
PM2.5 at 10.2 µg/m³ (AQI 53) with a 0.78 fine-to-coarse ratio and 6 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.78
- 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
- 11:10 PM
- Moonset
- 10:26 AM
- In sign
- ♓︎ Pisces
Cicadas claim the scorching afternoon
Foster at a glance
- Today vs. normal: 17°F above the seasonal normal for this latitude
- Last frost: April 5 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 64745
16-Day Forecast — Foster
- Sat90°72°37%
- Sun90°69°21%
- Mon87°68°16%
- Tue87°69°3%
- Wed89°69°3%
- Thu90°71°35%
- Fri89°75°49%
- Sat90°72°22%
- Sun80°64°7%
- Mon79°58°3%
- Tue84°60°5%
- Wed82°64°10%
- Thu85°67°10%
- Fri82°66°16%
- Sat84°67°13%
- Sun86°71°13%
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 — Foster
SPC has placed Foster in the Slight Risk category for severe thunderstorms today.
- TODAYSLGTSlight Risk
- TOMORROWTSTMGeneral Thunderstorms
- DAY 3TSTMGeneral Thunderstorms
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 Foster
- 64745
- 64779