Foster, Missouri Weather
Fireflies pulse through the magnolias. Day 76 of spring. Read this microseason across nine climate regions →
Foster weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 3Overcast——83°65°—
- ThursdayJun 4Rain24%0.21″83°66°0°
- FridayJun 5Light Drizzle26%—82°68°-1°
- SaturdayJun 6Overcast20%—83°68°+1°
- SundayJun 7Light Showers65%0.02″83°66°0°
- MondayJun 8Thunderstorm58%—87°68°+4°
- TuesdayJun 9Thunderstorm34%—89°73°+2°
Ozone at AQI 47 — peak already passed at 1 PM under clear skies. AQI up 6 over the last 6 hours (gradual rise). 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 47 — peak already passed at 1 PM under clear skies. Levels should ease through evening.
- Present
- AQI 47
- UV peak
- 7.0 at earlier today
- Sky at peak
- clear
- Projected peak
- AQI 47
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).
The higher the clouds, the finer the weather.
- Moonrise
- 4:03 AM
- Moonset
- 1:23 PM
- In sign
- ♑︎ Capricorn
Fireflies pulse through the magnolias
Foster at a glance
- Today vs. normal: 5°F above the seasonal normal for this latitude
- Last frost: April 5 (climatological average for this latitude)
- Microseason: Jun 1–5
- Planting window: Harvest spring lettuce before it bolts. Sow heat-tolerant greens.
Right now in the garden
Peak growing season
As of June 3, 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 General Thunderstorms category for severe thunderstorms tomorrow.
- TODAYNONENo severe risk
- TOMORROWTSTMGeneral Thunderstorms
- DAY 3TSTMGeneral Thunderstorms
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.