Holyoke, Colorado Weather
Monsoon storms drench the south. Day 15 of summer. Read this microseason across nine climate regions →
Holyoke weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 5Mostly Clear——92°57°—
- MondayJul 6Overcast——97°64°+5°
- TuesdayJul 7Showers61%0.18″99°69°+2°
- WednesdayJul 8Light Showers61%0.01″96°67°-3°
- ThursdayJul 9Light Rain59%0.06″92°65°-4°
- FridayJul 10Overcast52%—87°61°-5°
- SaturdayJul 11Clear——99°67°+12°
AQI 51 (Moderate), driven by Ozone. AQI flat over the last 6 hours (within ±3 points). Ozone at AQI 68 now. With UV 7.9 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 72 around 1 PM.
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 68 now. With UV 7.9 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 72 around 1 PM.
- Present
- AQI 68
- UV peak
- 7.9 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 72
PM × Wind × Precip
PM2.5 at 12.3 µg/m³ (AQI 57), ratio 0.64 with 9 mph wind — characteristic of long-range haze transport rather than a local source.
- PM2.5/PM10
- 0.64
- 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).
If the first of July be rainy weather, 'twill rain more or less for four weeks together.
- Moonrise
- 11:08 PM
- Moonset
- 11:04 AM
- In sign
- ♓︎ Pisces
Monsoon storms drench the south
Holyoke at a glance
- Today vs. normal: 21°F above the seasonal normal for this latitude
- Last frost: April 19 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 80734
16-Day Forecast — Holyoke
- Sun92°57°1%
- Mon97°64°3%
- Tue99°69°61%
- Wed96°67°61%
- Thu92°65°59%
- Fri87°61°52%
- Sat99°67°7%
- Sun105°72°2%
- Mon107°75°4%
- Tue113°78°6%
- Wed106°75°13%
- Thu101°70°23%
- Fri98°68°26%
- Sat100°72°24%
- Sun98°73°26%
- Mon103°74°23%
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 — Holyoke
SPC includes Holyoke in the general thunderstorm area tomorrow — no severe risk, but storms are possible.
- TODAYNONENo severe risk
- 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 Holyoke
- 80734