Round Rock, Arizona Weather
Heat hardens the dust. Day 77 of spring. Read this microseason across nine climate regions →
Round Rock weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 4Mostly Clear——90°59°—
- FridayJun 5Clear——92°61°+2°
- SaturdayJun 6Overcast——91°59°-1°
- SundayJun 7Overcast——87°66°-4°
- MondayJun 8Overcast——89°65°+2°
- TuesdayJun 9Partly Cloudy——93°65°+4°
- WednesdayJun 10Overcast——87°66°-6°
Ozone at AQI 76 now. AQI flat over the last 6 hours (within ±4 points). With UV 10 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 102 by mid-afternoon.
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 76 now. With UV 10 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 102 by mid-afternoon.
- Present
- AQI 76
- UV peak
- 10.1 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 102
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
- 5:38 AM
- Moonset
- 3:33 PM
- In sign
- ♒︎ Aquarius
Heat hardens the dust
Round Rock at a glance
- Today vs. normal: 11°F above the seasonal normal for this latitude
- Last frost: March 26 (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 4, 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.