Lone Tree, Colorado Weather
Pikas hayfeeding in granite peaks. Day 77 of spring. Read this microseason across nine climate regions →
Lone Tree weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 4Overcast——85°51°—
- FridayJun 5Overcast——88°62°+3°
- SaturdayJun 6Rain20%0.12″88°61°0°
- SundayJun 7Overcast20%—89°59°+1°
- MondayJun 8Overcast30%—90°62°+1°
- TuesdayJun 9Overcast——93°64°+3°
- WednesdayJun 10Overcast——91°67°-2°
Ozone at AQI 86. AQI flat over the last 6 hours (within ±3 points). Overcast through the UV peak window (cloud cover ~67%) — afternoon ozone should stay flat.
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 86. Overcast through the UV peak window (cloud cover ~67%) — afternoon ozone should stay flat.
- Present
- AQI 86
- UV peak
- 8.0 at 1 PM
- Sky at peak
- overcast
- Projected peak
- AQI 46
PM × Wind × Precip
PM2.5/PM10 ratio 0.53 with 6 mph wind — characteristic of long-range haze transport rather than a local source.
- PM2.5/PM10
- 0.53
- Wind
- light
- Recent rain
- 0h in last 6h
- Pattern
- transport
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
- 5:28 AM
- Moonset
- 3:06 PM
- In sign
- ♒︎ Aquarius
Pikas hayfeeding in granite peaks
Lone Tree at a glance
- Today vs. normal: 9°F above the seasonal normal for this latitude
- Last frost: April 13 (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
Warm-season window is open
As of June 4, the last spring frost has passed for most years. Transplant tomatoes, peppers, eggplants, basil, and cucurbits (cucumbers, squash, melons) now. Direct-sow beans and corn into warm soil.
SPC Convective Outlook
Storm Prediction Center — Lone Tree
SPC has placed Lone Tree in the General Thunderstorms category for severe thunderstorms today.
- 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.