Walden, Colorado Weather
Paintbrush crowns the ridges. Day 88 of spring. Read this microseason across nine climate regions →
Walden weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 15Overcast——72°34°—
- TuesdayJun 16Overcast——76°40°+4°
- WednesdayJun 17Clear——77°48°+1°
- ThursdayJun 18Overcast——76°39°-1°
- FridayJun 19Overcast——81°40°+5°
- SaturdayJun 20Overcast25%—78°43°-3°
- SundayJun 21Overcast19%—73°40°-5°
AQI 51 (Moderate), driven by Ozone. AQI flat over the last 6 hours (within ±3 points). Ozone at AQI 70 — peak already passed at 1 PM under partly cloudy skies. Levels should ease through evening.
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 70 — peak already passed at 1 PM under partly cloudy skies. Levels should ease through evening.
- Present
- AQI 70
- UV peak
- 2.8 at earlier today
- Sky at peak
- partly cloudy
- Projected peak
- AQI 70
PM × Wind × Precip
PM2.5 at 5.2 µg/m³, PM10 at 6.6 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.79
- Wind
- breezy
- 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
- 5:38 AM
- Moonset
- 8:59 PM
- In sign
- ♋︎ Cancer
Paintbrush crowns the ridges
Walden at a glance
- Today vs. normal: 4°F below the seasonal normal for this latitude
- Last frost: April 20 (climatological average for this latitude)
- Microseason: Jun 11–15
- Planting window: Stake and prune tomato suckers. Watch for squash vine borers.
16-Day Forecast — Walden
- Mon71°34°0%
- Tue76°40°1%
- Wed77°48°1%
- Thu76°39°0%
- Fri81°40°1%
- Sat78°43°25%
- Sun73°40°19%
- Mon77°40°17%
- Tue80°39°9%
- Wed84°37°8%
- Thu88°42°6%
- Fri84°47°9%
- Sat73°42°15%
- Sun72°33°16%
- Mon83°32°22%
- Tue88°40°23%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Warm-season window is open
As of June 15, 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.
ZIP codes in Walden
- 80480