Walnut Creek, Arizona Weather
Heat hardens the dust. Day 76 of spring. Read this microseason across nine climate regions →
Walnut Creek weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 3Overcast——96°72°—
- ThursdayJun 4Clear——99°75°+3°
- FridayJun 5Clear——98°74°-1°
- SaturdayJun 6Overcast——95°72°-3°
- SundayJun 7Overcast——92°69°-3°
- MondayJun 8Clear——92°64°0°
- TuesdayJun 9Partly Cloudy——95°69°+3°
Ozone at AQI 51 — peak already passed at 1 PM under partly cloudy skies. AQI up 8 over the last 6 hours (gradual rise). 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 51 — peak already passed at 1 PM under partly cloudy skies. Levels should ease through evening.
- Present
- AQI 51
- UV peak
- 6.4 at earlier today
- Sky at peak
- partly cloudy
- Projected peak
- AQI 51
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).
The higher the clouds, the finer the weather.
- Moonrise
- 5:14 AM
- Moonset
- 2:56 PM
- In sign
- ♑︎ Capricorn
Heat hardens the dust
Walnut Creek at a glance
- Today vs. normal: 16°F above the seasonal normal for this latitude
- Last frost: March 18 (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
Peak growing season
As of June 3, 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.