San Tan Valley, Arizona Weather
Heat hardens the dust. Day 78 of spring. Read this microseason across nine climate regions →
San Tan Valley weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 5Clear——105°74°—
- SaturdayJun 6Overcast——102°69°-3°
- SundayJun 7Overcast——103°76°+1°
- MondayJun 8Overcast——104°73°+1°
- TuesdayJun 9Clear——106°74°+2°
- WednesdayJun 10Overcast——106°77°0°
- ThursdayJun 11Partly Cloudy——102°77°-4°
AQI 63 (Moderate), driven by PM10. AQI flat over the last 6 hours (within ±3 points). PM10 at 231.0 µg/m³ (AQI 139) with a 0.14 fine-to-coarse ratio under 11 mph wind — coarse road or agricultural dust being kicked up.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion during the projected peak around 2 PM.
What's driving it
Ozone × UV × Sky
Ozone at AQI 37 now. With UV 3.3 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 16 by mid-afternoon.
- Present
- AQI 37
- UV peak
- 3.3 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 16
PM × Wind × Precip
PM10 at 231.0 µg/m³ (AQI 139) with a 0.14 fine-to-coarse ratio under 11 mph wind — coarse road or agricultural dust being kicked up.
- PM2.5/PM10
- 0.14
- Wind
- breezy
- Recent rain
- 0h in last 6h
- Pattern
- blown dust
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
- 6:12 AM
- Moonset
- 4:52 PM
- In sign
- ♒︎ Aquarius
Heat hardens the dust
San Tan Valley at a glance
- Today vs. normal: 5°F above the seasonal normal for this latitude
- Last frost: March 6 (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 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.