Mesa, California Weather
Summer heat deepens across the valleys. Day 15 of summer. Read this microseason across nine climate regions →
Mesa weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 5Overcast——89°68°—
- MondayJul 6Overcast——95°64°+6°
- TuesdayJul 7Clear——96°70°+1°
- WednesdayJul 8Clear——99°69°+3°
- ThursdayJul 9Clear——99°69°0°
- FridayJul 10Clear——101°68°+2°
- SaturdayJul 11Overcast——102°73°+1°
AQI 37 (Good), driven by Ozone. AQI down 5 over the last 6 hours (gradual decline). Ozone at AQI 35. Overcast through the UV peak window (cloud cover ~88%) — afternoon ozone should stay flat.
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 35. Overcast through the UV peak window (cloud cover ~88%) — afternoon ozone should stay flat.
- Present
- AQI 35
- UV peak
- 9.9 at 1 PM
- Sky at peak
- overcast
- Projected peak
- AQI 23
PM × Wind × Precip
PM2.5 at 6.1 µg/m³ (AQI 34), ratio 0.54 with 5 mph wind — characteristic of long-range haze transport rather than a local source.
- PM2.5/PM10
- 0.54
- Wind
- light
- Recent rain
- 0h in last 6h
- Pattern
- transport
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
- 11:12 PM
- Moonset
- 11:12 AM
- In sign
- ♓︎ Pisces
Summer heat deepens across the valleys
Mesa at a glance
- Today vs. normal: 10°F above the seasonal normal for this latitude
- Last frost: April 1 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
16-Day Forecast — Mesa
- Sun89°68°8%
- Mon95°64°7%
- Tue96°70°1%
- Wed99°69°0%
- Thu99°69°0%
- Fri101°68°0%
- Sat102°73°2%
- Sun100°72°9%
- Mon102°75°23%
- Tue99°77°32%
- Wed91°75°27%
- Thu84°68°19%
- Fri95°72°26%
- Sat98°77°21%
- Sun100°75°23%
- Mon99°76°22%
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 — Mesa
SPC includes Mesa in the general thunderstorm area today — no severe risk, but storms are possible.
- TODAYTSTMGeneral Thunderstorms
- TOMORROWNONENo severe risk
- DAY 3NONENo severe risk
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 Mesa
- 93514