Bonanza, Colorado Weather
Monsoon storms drench the south. Day 15 of summer. Read this microseason across nine climate regions →
Bonanza weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 5Overcast——76°47°—
- MondayJul 6Overcast15%—78°50°+2°
- TuesdayJul 7Light Drizzle72%—81°49°+3°
- WednesdayJul 8Overcast34%—83°47°+2°
- ThursdayJul 9Overcast25%—81°49°-2°
- FridayJul 10Overcast19%—76°49°-5°
- SaturdayJul 11Overcast——86°51°+10°
AQI 67 (Moderate), driven by PM2.5. AQI down 39 over the last 6 hours — air quality is improving sharply. PM2.5 at 21.2 µg/m³ (AQI 74) with a 0.91 fine-to-coarse ratio and 2 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
Ozone × UV × Sky
Ozone at AQI 43. Overcast through the UV peak window (cloud cover ~73%) — afternoon ozone should stay flat.
- Present
- AQI 43
- UV peak
- 3.3 at 1 PM
- Sky at peak
- overcast
- Projected peak
- AQI 10
PM × Wind × Precip
PM2.5 at 21.2 µg/m³ (AQI 74) with a 0.91 fine-to-coarse ratio and 2 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.91
- Wind
- calm
- 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
- 11:22 PM
- Moonset
- 11:20 AM
- In sign
- ♓︎ Pisces
Monsoon storms drench the south
Bonanza at a glance
- Today vs. normal: 19°F below the seasonal normal for this latitude
- Last frost: April 6 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
15-Day Forecast — Bonanza
- Sun76°48°6%
- Mon78°50°15%
- Tue81°49°72%
- Wed83°47°34%
- Thu81°49°25%
- Fri76°49°19%
- Sat86°51°6%
- Sun85°49°6%
- Mon89°52°7%
- Tue85°54°21%
- Wed89°52°30%
- Thu88°52°55%
- Fri86°50°55%
- Sat87°53°73%
- Sun86°53°74%
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 — Bonanza
SPC includes Bonanza 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 Bonanza
- 81155