San Bernardino County, California, United States

Last updated: 1:21 PM CDT  ·  Refresh
31°C
Feels like 28°
Clear
▲ 35°  /  ▼ 15°
Wind
18 mph W
Humidity
21%
Dew Point
7°
Pressure
27.74 inHg
Visibility
10 mi
UV Index
9.5
Cloud Cover
0%
Sunrise
5:32 AM
Sunset
8:01 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: San Bernardino County is currently clear at 30°C. Dry conditions are expected through the next 24 hours. Sunrise: 5:32AM · Sunset: 8:01PM.

Alerts

No active alerts for this location.
49 AQI · Good Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
31°
3%
12 PM
31°
3%
1 PM
33°
3%
2 PM
34°
3%
3 PM
34°
3%
4 PM
33°
3%
5 PM
35°
3%
6 PM
33°
3%
7 PM
31°
3%
8 PM
29°
3%
9 PM
27°
3%
10 PM
25°
3%
11 PM
24°
3%
12 AM
23°
3%
1 AM
21°
3%
2 AM
21°
3%
3 AM
20°
3%
4 AM
19°
3%
5 AM
17°
3%
6 AM
18°
3%
7 AM
19°
3%
8 AM
21°
3%
9 AM
23°
3%
10 AM
24°
3%
7-Day Forecast
Today
35° 15°
Clear.
Sun
34° 15°
Clear.
Mon
35° 14°
Clear.
Tue
35° 13°
Clear.
Wed
37° 19°
Clear.
Thu
38° 19°
Clear.
Fri
37° 20°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 31° Clear 3% 18 mph W 21%
12 PM 31° Clear 3% 18 mph W 17%
1 PM 33° Clear 3% 19 mph W 14%
2 PM 34° Clear 3% 20 mph W 14%
3 PM 34° Clear 3% 21 mph W 15%
4 PM 33° Clear 3% 22 mph W 17%
5 PM 35° Clear 3% 21 mph W 19%
6 PM 33° Clear 3% 20 mph W 24%
7 PM 31° Clear 3% 17 mph W 28%
8 PM 29° Clear 3% 14 mph W 33%
9 PM 27° Clear 3% 10 mph WNW 38%
10 PM 25° Clear 3% 7 mph WNW 43%
11 PM 24° Clear 3% 5 mph WNW 47%
12 AM 23° Clear 3% 4 mph WNW 50%
1 AM 21° Clear 3% 4 mph WNW 54%
2 AM 21° Clear 3% 4 mph NNW 56%
3 AM 20° Clear 3% 5 mph NNW 58%
4 AM 19° Clear 3% 5 mph N 60%
5 AM 17° Clear 3% 6 mph NNW 59%
6 AM 18° Clear 3% 8 mph NW 54%
7 AM 19° Clear 3% 12 mph NW 49%
8 AM 21° Clear 3% 13 mph NW 44%
9 AM 23° Clear 3% 12 mph NW 39%
10 AM 24° Clear 3% 11 mph NW 34%
15-Day Forecast
Today
6/27
Clear
3%
15°
35°
Sun
6/28
Clear
3%
15°
34°
Mon
6/29
Clear
3%
14°
35°
Tue
6/30
Clear
3%
13°
35°
Wed
7/1
Clear
3%
19°
37°
Thu
7/2
Clear
3%
19°
38°
Fri
7/3
Clear
3%
20°
37°
Sat
7/4
Clear
3%
20°
37°
Sun
7/5
Clear
3%
22°
42°
Mon
7/6
Clear
3%
24°
43°
Tue
7/7
Clear
3%
23°
41°
Wed
7/8
Clear
60%
24°
41°
Thu
7/9
Clear
25%
26°
41°
Fri
7/10
Drizzle
60%
26°
41°
Sat
7/11
Clear
60%
26°
41°
49
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
23 AQI 4.1 µg/m³
O3
Ground-level ozone
Dominant
49 AQI 54 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Sun 49 Good 49 23
Mon 45 Good 45 21
Tue 54 Moderate 54 29
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 Sat Jun 27, 17:00'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
SBCAPE91 J/kg
MLCAPE13 J/kg
MUCAPE91 J/kg
SBCIN0 J/kg
MLCIN0 J/kg
Lifted Index7.8
Kinematics
0–6 km Shear24 kt
0–1 km Shear5 kt
Eff. Shear—
0–1 km SRH2
0–3 km SRH-44
Eff. SRH—
Storm Motion242° @ 32 kt
0–1 km EHI0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)—
Supercell—
K-Index-8.2
Thermo & Levels
PWAT0.48 in
0–3 km LR7.1 °C/km
700–500 LR5.5 °C/km
Total Totals27.8
LCL668 hPa
LFC939 hPa
EL798 hPa
Freezing Lvl15,440 ft