Allen, Kansas Weather
Fireflies pulse through the magnolias. Day 77 of spring. Read this microseason across nine climate regions →
Allen weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 4Heavy Rain29%0.66″84°68°—
- FridayJun 5Thunderstorm29%0.01″92°69°+8°
- SaturdayJun 6Thunderstorm22%—85°68°-7°
- SundayJun 7Light Showers66%—79°66°-6°
- MondayJun 8Thunderstorm44%—89°69°+10°
- TuesdayJun 9Thunderstorm41%—92°73°+3°
- WednesdayJun 10Mostly Clear10%—91°73°-1°
Ozone at AQI 500 — peak already passed at 1 PM under partly cloudy skies. AQI up 9 over the last 6 hours (gradual rise). Levels should ease through evening.
AVOID OUTDOORS Avoid outdoor exertion. Keep windows closed; use HEPA filtration indoors if available.
What's driving it
Ozone × UV × Sky
Ozone at AQI 500 — peak already passed at 1 PM under partly cloudy skies. Levels should ease through evening.
- Present
- AQI 500
- UV peak
- 3.1 at earlier today
- Sky at peak
- partly cloudy
- Projected peak
- AQI 500
PM × Wind × Precip
PM2.5 at 9.7 µg/m³, PM10 at 10.4 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.93
- Wind
- windy
- 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).
A summer fog for fair, a winter fog for rain.
- Moonrise
- 4:50 AM
- Moonset
- 2:31 PM
- In sign
- ♒︎ Aquarius
Fireflies pulse through the magnolias
Allen at a glance
- Today vs. normal: 7°F above the seasonal normal for this latitude
- Last frost: April 8 (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 — Allen
SPC has placed Allen in the Marginal Risk category for severe thunderstorms today.
- TODAYMRGLMarginal Risk
- TOMORROWTSTMGeneral Thunderstorms
- DAY 3TSTMGeneral Thunderstorms
Isolated severe storms possible. Limited threat for hail or damaging wind.
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.