Westminster, Colorado Weather
Monsoon storms drench the south. Day 15 of summer. Read this microseason across nine climate regions →
Westminster weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 5Overcast——96°59°—
- MondayJul 6Overcast——99°64°+3°
- TuesdayJul 7Overcast44%—97°75°-2°
- WednesdayJul 8Light Rain63%0.09″95°71°-2°
- ThursdayJul 9Drizzle49%0.05″94°70°-1°
- FridayJul 10Partly Cloudy22%—97°71°+3°
- SaturdayJul 11Clear——97°73°0°
AQI 36 (Good), driven by PM2.5. AQI down 46 over the last 6 hours — air quality is improving sharply. PM2.5 at 8.2 µg/m³ (AQI 46) with a 0.93 fine-to-coarse ratio and 5 mph wind — combustion smoke trapped in calm 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
PM × Wind × Precip
PM2.5 at 8.2 µg/m³ (AQI 46) with a 0.93 fine-to-coarse ratio and 5 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.93
- Wind
- light
- 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).
If the first of July be rainy weather, 'twill rain more or less for four weeks together.
- Moonrise
- 11:19 PM
- Moonset
- 11:15 AM
- In sign
- ♓︎ Pisces
Monsoon storms drench the south
Westminster at a glance
- Today vs. normal: 9°F below the seasonal normal for this latitude
- Last frost: April 15 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP codes: 80030, 80031
15-Day Forecast — Westminster
- Sun96°59°2%
- Mon99°64°4%
- Tue97°75°44%
- Wed95°71°63%
- Thu94°70°49%
- Fri97°71°22%
- Sat97°73°4%
- Sun100°75°2%
- Mon107°77°6%
- Tue99°80°12%
- Wed98°78°24%
- Thu102°70°44%
- Fri100°74°45%
- Sat102°76°44%
- Sun96°78°55%
Forecast data from Open-Meteo (CC BY 4.0).
Live wind & temperature near Westminster
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 — Westminster
SPC includes Westminster 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 Westminster
- 80030
- 80031
- 80234
- 80005
- 80003
- 80021
- 80020
- 80035
- 80036