Irena, Missouri Weather
Fireflies pulse through the magnolias. Day 77 of spring. Read this microseason across nine climate regions →
Irena weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 4Heavy Showers85%1.8″81°63°—
- FridayJun 5Thunderstorm96%1.6″82°70°+1°
- SaturdayJun 6Thunderstorm31%0.59″86°68°+4°
- SundayJun 7Light Showers76%0.05″76°66°-10°
- MondayJun 8Thunderstorm60%—86°65°+10°
- TuesdayJun 9Thunderstorm22%—88°73°+2°
- WednesdayJun 10Thunderstorm14%—89°72°+1°
PM scrubbed by 4 hours of recent rain — PM2.5 down to 8.9 µg/m³, PM10 to 9.5 µg/m³. AQI up 18 in the last 6 hours — air quality is degrading.
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 41 — peak already passed at 1 PM under overcast skies. Levels should ease through evening.
- Present
- AQI 41
- UV peak
- 0.6 at earlier today
- Sky at peak
- overcast
- Projected peak
- AQI 41
PM × Wind × Precip
PM scrubbed by 4 hours of recent rain — PM2.5 down to 8.9 µg/m³, PM10 to 9.5 µg/m³.
- PM2.5/PM10
- 0.94
- Wind
- breezy
- Recent rain
- 4h 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).
A summer fog for fair, a winter fog for rain.
- Moonrise
- 4:49 AM
- Moonset
- 2:18 PM
- In sign
- ♒︎ Aquarius
Fireflies pulse through the magnolias
Irena at a glance
- Today vs. normal: 76°F — typical for the season
- Last frost: April 19 (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 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 — Irena
SPC has placed Irena in the Slight Risk category for severe thunderstorms tomorrow.
- TODAYMRGLMarginal Risk
- TOMORROWSLGTSlight Risk
- 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.