Ellicott, Colorado Weather
Wind builds through canyons. Day 16 of summer. Read this microseason across nine climate regions →
Ellicott weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 6Overcast——92°58°—
- TuesdayJul 7Overcast17%—93°61°+1°
- WednesdayJul 8Drizzle66%0.04″91°64°-2°
- ThursdayJul 9Light Drizzle60%—92°61°+1°
- FridayJul 10Light Drizzle39%0.01″93°59°+1°
- SaturdayJul 11Mostly Clear10%—95°60°+2°
- SundayJul 12Clear——92°66°-3°
AQI 54 (Moderate), driven by PM2.5. AQI down 51 over the last 6 hours — air quality is improving sharply. PM2.5 at 9.8 µg/m³ (AQI 52) with a 0.74 fine-to-coarse ratio and 3 mph wind — combustion smoke trapped in stagnant 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 35 now. With UV 3.3 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 16.
- Present
- AQI 35
- UV peak
- 3.3 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 16
PM × Wind × Precip
PM2.5 at 9.8 µg/m³ (AQI 52) with a 0.74 fine-to-coarse ratio and 3 mph wind — combustion smoke trapped in stagnant air, not road dust.
- PM2.5/PM10
- 0.74
- Wind
- calm
- 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).
When the stars begin to huddle, the earth will soon become a puddle.
- Moonrise
- 11:40 PM
- Moonset
- 12:19 PM
- In sign
- ♓︎ Pisces
Wind builds through canyons
Ellicott at a glance
- Today vs. normal: 13°F below the seasonal normal for this latitude
- Last frost: April 9 (climatological average for this latitude)
- Microseason: Jul 6–10
- Planting window: Sow fall broccoli and cabbage indoors for transplant in 4 weeks.
15-Day Forecast — Ellicott
- Mon92°58°7%
- Tue93°61°17%
- Wed91°64°66%
- Thu92°61°60%
- Fri93°59°39%
- Sat95°60°10%
- Sun92°66°1%
- Mon91°61°3%
- Tue94°63°7%
- Wed93°66°26%
- Thu96°65°38%
- Fri97°69°57%
- Sat94°67°64%
- Sun89°63°65%
- Mon91°64°42%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of July 6, 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 — Ellicott
SPC includes Ellicott in the general thunderstorm area today — no severe risk, but storms are possible.
- TODAYTSTMGeneral Thunderstorms
- 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.
ZIP codes in Ellicott
- 80808