Herndon, Kansas Weather
Cicadas claim the scorching afternoon. Day 15 of summer. Read this microseason across nine climate regions →
Herndon weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 4Light Showers57%0.08″88°67°—
- SundayJul 5Overcast——94°65°+6°
- MondayJul 6Overcast——94°66°0°
- TuesdayJul 7Light Drizzle15%—98°74°+4°
- WednesdayJul 8Overcast24%—96°71°-2°
- ThursdayJul 9Heavy Showers43%0.34″96°69°0°
- FridayJul 10Light Drizzle43%0.02″94°68°-2°
AQI 58 (Moderate), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 13.4 µg/m³, PM10 at 16.5 µg/m³ — typical background levels with no transport signature.
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 33 now. With UV 0.0 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 8 around 1 PM.
- Present
- AQI 33
- UV peak
- 0.0 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 8
PM × Wind × Precip
PM2.5 at 13.4 µg/m³, PM10 at 16.5 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.81
- 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
- 12:01 AM
- Moonset
- 11:58 AM
- In sign
- ♓︎ Pisces
Cicadas claim the scorching afternoon
Herndon at a glance
- Today vs. normal: 73°F — typical for the season
- Last frost: April 15 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 67739
16-Day Forecast — Herndon
- Sat88°67°57%
- Sun94°65°8%
- Mon94°66°4%
- Tue98°74°15%
- Wed96°71°24%
- Thu96°69°43%
- Fri94°68°43%
- Sat87°65°6%
- Sun89°67°2%
- Mon94°68°1%
- Tue101°71°7%
- Wed107°73°14%
- Thu112°83°19%
- Fri108°80°12%
- Sat104°75°17%
- Sun93°75°24%
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 — Herndon
SPC has placed Herndon in the Slight Risk category for severe thunderstorms today.
- TODAYSLGTSlight Risk
- TOMORROWNONENo severe risk
- DAY 3NONENo severe risk
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 Herndon
- 67739