Holyoke, Colorado Weather
Pikas hayfeeding in granite peaks. Day 77 of spring. Read this microseason across nine climate regions →
Holyoke weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 4Overcast——84°56°—
- FridayJun 5Overcast——86°59°+2°
- SaturdayJun 6Light Drizzle——95°63°+9°
- SundayJun 7Light Drizzle23%—96°66°+1°
- MondayJun 8Overcast27%—97°63°+1°
- TuesdayJun 9Overcast27%—103°67°+6°
- WednesdayJun 10Light Drizzle14%—100°74°-3°
Ozone at AQI 500 now. AQI flat over the last 6 hours (within ±4 points). With UV 8.0 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 533 by mid-afternoon.
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 now. With UV 8.0 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 533 by mid-afternoon.
- Present
- AQI 500
- UV peak
- 8.0 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 533
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
- 5:21 AM
- Moonset
- 2:52 PM
- In sign
- ♒︎ Aquarius
Pikas hayfeeding in granite peaks
Holyoke at a glance
- Today vs. normal: 8°F above the seasonal normal for this latitude
- Last frost: April 19 (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 — Holyoke
SPC has placed Holyoke in the Marginal Risk category for severe thunderstorms today.
- TODAYMRGLMarginal Risk
- TOMORROWNONENo severe risk
- 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.