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: 8:28 AM CDT  ·  Refresh
23°C
Feels like 23°
Mostly Cloudy
▲ 31°  /  ▼ 21°
Wind
10 mph E
Humidity
75%
Dew Point
19°
Pressure
27.28 inHg
Visibility
8 mi
UV Index
1.4
Cloud Cover
65%
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 mostly cloudy at 23°C. Precipitation is likely — peak probability 73% around 12 PM. Atmospheric instability is elevated (CAPE up to 1794 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°
68%
7 AM
22°
55%
8 AM
22°
70%
9 AM
23°
71%
10 AM
24°
59%
11 AM
24°
67%
12 PM
27°
73%
1 PM
28°
69%
2 PM
29°
52%
3 PM
29°
38%
4 PM
31°
38%
5 PM
30°
49%
6 PM
29°
50%
7 PM
27°
44%
8 PM
26°
35%
9 PM
26°
26%
10 PM
26°
22%
11 PM
25°
12%
12 AM
24°
12%
1 AM
23°
17%
2 AM
23°
18%
3 AM
23°
18%
4 AM
21°
22%
5 AM
22°
23%
7-Day Forecast
Today
31° 21°
Rain, 73% chance.
Tue
34° 21°
Mostly Clear with a 35% chance of rain.
Wed
32° 23°
Partly Cloudy with a 28% chance of rain.
Thu
32° 23°
Mostly Cloudy with a 64% chance of rain.
Fri
32° 22°
Rain, 64% chance.
Sat
29° 19°
Rain, 71% chance.
Sun
33° 21°
Drizzle, 53% chance.
TimeTempConditionsPrecipWindHumidity
Now 23° Mostly Cloudy 68% 10 mph E 75%
7 AM 22° Partly Cloudy 55% 9 mph ESE 71%
8 AM 22° Partly Cloudy 70% 8 mph SE 69%
9 AM 23° Partly Cloudy 71% 8 mph ESE 66%
10 AM 24° Partly Cloudy 59% 7 mph ENE 63%
11 AM 24° Partly Cloudy 67% 7 mph NE 60%
12 PM 27° Rain 73% 6 mph ENE 59%
1 PM 28° Partly Cloudy 69% 6 mph ENE 58%
2 PM 29° Partly Cloudy 52% 7 mph E 56%
3 PM 29° Partly Cloudy 38% 7 mph E 55%
4 PM 31° Partly Cloudy 38% 6 mph ENE 55%
5 PM 30° Partly Cloudy 49% 5 mph NE 57%
6 PM 29° Mostly Cloudy 50% 4 mph E 62%
7 PM 27° Mostly Cloudy 44% 6 mph SSE 66%
8 PM 26° Partly Cloudy 35% 7 mph S 68%
9 PM 26° Mostly Clear 26% 6 mph S 69%
10 PM 26° Clear 22% 5 mph S 69%
11 PM 25° Clear 12% 5 mph S 70%
12 AM 24° Clear 12% 5 mph SSW 70%
1 AM 23° Clear 17% 6 mph SW 71%
2 AM 23° Clear 18% 6 mph SW 72%
3 AM 23° Clear 18% 6 mph SSW 72%
4 AM 21° Rain 22% 7 mph SSW 72%
5 AM 22° Rain 23% 7 mph SSW 71%
15-Day Forecast
Today
8/31
Rain
73%
21°
31°
Tue
9/1
Mostly Clear
35%
21°
34°
Wed
9/2
Partly Cloudy
28%
23°
32°
Thu
9/3
Mostly Cloudy
64%
23°
32°
Fri
9/4
Rain
64%
22°
32°
Sat
9/5
Rain
71%
19°
29°
Sun
9/6
Drizzle
53%
21°
33°
Mon
9/7
Rain
68%
22°
33°
Tue
9/8
Rain
68%
22°
34°
Wed
9/9
Drizzle
42%
22°
34°
Thu
9/10
Drizzle
60%
24°
34°
Fri
9/11
Drizzle
60%
25°
34°
Sat
9/12
Drizzle
60%
24°
33°
Sun
9/13
Drizzle
60%
24°
32°
Mon
9/14
Drizzle
60%
24°
32°
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
SBCAPE866 J/kg
MLCAPE676 J/kg
MUCAPE933 J/kg
SBCIN-63 J/kg
MLCIN-69 J/kg
Lifted Index-3.7
Kinematics
0–6 km Shear22 kt
0–1 km Shear5 kt
Eff. Shear25 kt
0–1 km SRH-6
0–3 km SRH41
Eff. SRH41
Storm Motion257° @ 16 kt
0–1 km EHI-0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)0.1
Supercell0.5
K-Index40.9
Thermo & Levels
PWAT1.81 in
0–3 km LR5.9 °C/km
700–500 LR6.1 °C/km
Total Totals48.4
LCL872 hPa
LFC725 hPa
EL229 hPa
Freezing Lvl12,867 ft