Flash Flood Warning — Pima County, AZ 9:00 AM Areal Flood Advisory — Pima County, AZ 9:15 AM Areal Flood Advisory — Pima County, AZ 9:45 AM Areal Flood Watch 12:00 AM

Pima County, Arizona, United States

Last updated: 7:59 AM CDT  ·  Refresh
23°C
Feels like 23°
Rain
▲ 31°  /  ▼ 21°
Wind
9 mph ESE
Humidity
76%
Dew Point
19°
Pressure
27.27 inHg
Visibility
1 mi
UV Index
0.0
Cloud Cover
79%
Sunrise
6:00 AM
Sunset
6:51 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Pima County is currently rain at 23°C. Precipitation is likely — peak probability 74% around 10 AM. Atmospheric instability is elevated (CAPE up to 2039 J/kg) — isolated convective development possible. Sunrise: 6:00AM · Sunset: 6:51PM.

Alerts

Flash Flood Warning
Pima County, AZ
Expires 9:00 AM
Areal Flood Advisory
Pima County, AZ
Expires 9:15 AM
Areal Flood Advisory
Pima County, AZ
Expires 9:45 AM
Areal Flood Watch
Expires 12:00 AM
33 AQI · Good Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
23°
67%
6 AM
21°
71%
7 AM
22°
72%
8 AM
23°
72%
9 AM
24°
73%
10 AM
25°
73%
11 AM
26°
60%
12 PM
28°
59%
1 PM
29°
41%
2 PM
29°
45%
3 PM
29°
57%
4 PM
31°
55%
5 PM
29°
67%
6 PM
28°
61%
7 PM
27°
50%
8 PM
26°
29%
9 PM
26°
25%
10 PM
26°
13%
11 PM
26°
16%
12 AM
24°
21%
1 AM
23°
21%
2 AM
23°
21%
3 AM
23°
23%
4 AM
21°
21%
7-Day Forecast
Today
31° 21°
Partly Cloudy with a 72% chance of rain.
Tue
34° 21°
Mostly Clear with a 35% chance of rain.
Wed
33° 22°
Partly Cloudy with a 45% chance of rain.
Thu
32° 22°
Mostly Cloudy with a 70% chance of rain.
Fri
33° 22°
Drizzle, 64% chance.
Sat
30° 19°
Rain, 66% chance.
Sun
33° 20°
Drizzle, 53% chance.
TimeTempConditionsPrecipWindHumidity
Now 23° Rain 67% 9 mph ESE 76%
6 AM 21° Rain 71% 8 mph SE 72%
7 AM 22° Heavy Rain 72% 8 mph SE 70%
8 AM 23° Partly Cloudy 72% 6 mph SE 68%
9 AM 24° Heavy Rain 73% 7 mph ENE 65%
10 AM 25° Partly Cloudy 73% 6 mph ENE 61%
11 AM 26° Mostly Clear 60% 6 mph E 59%
12 PM 28° Partly Cloudy 59% 6 mph ENE 59%
1 PM 29° Partly Cloudy 41% 8 mph ESE 57%
2 PM 29° Partly Cloudy 45% 6 mph E 56%
3 PM 29° Partly Cloudy 57% 6 mph E 55%
4 PM 31° Mostly Cloudy 55% 7 mph NE 55%
5 PM 29° Mostly Cloudy 67% 6 mph SE 60%
6 PM 28° Mostly Cloudy 61% 7 mph SSE 65%
7 PM 27° Partly Cloudy 50% 8 mph S 68%
8 PM 26° Mostly Clear 29% 7 mph S 69%
9 PM 26° Mostly Clear 25% 6 mph S 69%
10 PM 26° Clear 13% 5 mph S 70%
11 PM 26° Clear 16% 5 mph SSW 70%
12 AM 24° Clear 21% 6 mph SSW 71%
1 AM 23° Clear 21% 6 mph SSW 72%
2 AM 23° Clear 21% 6 mph SSW 72%
3 AM 23° Clear 23% 6 mph SSW 72%
4 AM 21° Rain 21% 7 mph SSW 72%
15-Day Forecast
Today
8/31
Partly Cloudy
72%
21°
31°
Tue
9/1
Mostly Clear
35%
21°
34°
Wed
9/2
Partly Cloudy
45%
22°
33°
Thu
9/3
Mostly Cloudy
70%
22°
32°
Fri
9/4
Drizzle
64%
22°
33°
Sat
9/5
Rain
66%
19°
30°
Sun
9/6
Drizzle
53%
20°
33°
Mon
9/7
Rain
66%
22°
33°
Tue
9/8
Rain
66%
22°
34°
Wed
9/9
Mostly Clear
40%
23°
34°
Thu
9/10
Clear
25%
24°
36°
Fri
9/11
Drizzle
60%
24°
34°
Sat
9/12
Drizzle
60%
24°
33°
Sun
9/13
Drizzle
60%
24°
34°
Mon
9/14
Drizzle
60%
24°
34°
33
Good
U.S. Air Quality Index · Dominant: O3
50 100 150 200

Air quality is satisfactory and poses little or no health risk.

Pollutant Breakdown · Today
PM2.5
Fine particulate matter
29 AQI 5.3 µg/m³
O3
Ground-level ozone
Dominant
33 AQI 36 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Tue 33 Good 33 29
Wed 37 Good 37 30
Thu 38 Good 38 34
About the Air Quality Index
0–50 Good
51–100 Moderate
101–150 Unhealthy for Sensitive Groups
151–200 Unhealthy
201–300 Very Unhealthy
301–500 Hazardous

The U.S. AQI runs 0–500. The overall value equals the highest individual pollutant sub-index, and the dominant pollutant is the one driving it. PM2.5 (fine particles) is reported in µg/m³ and ozone (O3) in ppb. Forecast source: NWS NAQFC.

1000850700500400300250200150100 -40-30-20-10010203040 0.41247101624 LCLLFCEL0°C Temperature (°C) Pressure (hPa)
Temp Dewpoint Parcel (SB) CAPE CIN Dry adiabat Moist adiabat Mixing ratio
RAP
Valid Mon Aug 31, 11:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 50 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE743 J/kg
MLCAPE614 J/kg
MUCAPE864 J/kg
SBCIN-99 J/kg
MLCIN-83 J/kg
Lifted Index-3.1
Kinematics
0–6 km Shear17 kt
0–1 km Shear7 kt
Eff. Shear19 kt
0–1 km SRH-21
0–3 km SRH23
Eff. SRH23
Storm Motion258° @ 15 kt
0–1 km EHI-0.1
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index39.8
Thermo & Levels
PWAT1.85 in
0–3 km LR5.7 °C/km
700–500 LR6.1 °C/km
Total Totals47.9
LCL872 hPa
LFC704 hPa
EL232 hPa
Freezing Lvl12,818 ft