Today | Weather | Sunday, August 9, 2026
Active Weather Warnings

Weather in Pomona, California

04:36 PM
Now
Cloudy Weather
97° F
Feels Like 97°
Precipitation 0 %
Wind 12 mph
UV Index (0 - 11+) 3
Humidity 29 %
Today
Sunny Weather
Day 97°
Night 70°
Precipitation 0 %
Wind 7 mph
UV Index (0 - 11+) 11

Warning: Extreme UV Index Today: 11

Overexposure to the sun's harmful UV rays can cause sunburn and increase the risk of developing skin cancer, including melanoma. Protect yourself by wearing clothing that covers your skin, sunglasses, and a hat. Apply a broad-spectrum sunscreen with an SPF of 30 or higher every two hours, even on cloudy days. Minimize direct sun exposure during peak hours (10 AM to 4 PM) to reduce the risk.

Pomona Weather Forecast Updated

30 minutes ago
Last updated on
Weather Forecast History
Last Year's Weather on This Day (August 9, 2025)
Night

Day

95°

Night

63°

Wind

5 mph

Precipitation

0 %

Air Quality in Pomona

NOW
37 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 7.29 µg/m³
PM10 19.17 µg/m³
O3 0.040 ppm
NO2 0.1 ppb
SO2 0.2 ppb
CO 0.06 ppm
NH3 0 µg/m³
NO 0.04 µg/m³
PM2.5 – Fine particles <2.5μm
PM10 – Inhalable particles <10μm
O3 – Ozone
NO2 – Nitrogen dioxide
SO2 – Sulfur dioxide
CO – Carbon monoxide
NH3 – Ammonia
NO – Nitric oxide

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

Show raw pollutant concentrations (µg/m³)
PM2.57.29 µg/m³
PM1019.17 µg/m³
O378.1 µg/m³
NO20.23 µg/m³
SO20.49 µg/m³
CO73.59 µg/m³
NH30 µg/m³
NO0.04 µg/m³

Weather Alerts and Warnings for Pomona

Moderate Expected Likely

Heat Advisory

Heat Advisory issued August 7 at 9:11AM PDT until August 9 at 8:00PM PDT by NWS Los Angeles/Oxnard CA
Aug 8, 10:00 AM Aug 9, 8:00 PM
WHAT: Very warm temperatures of 90 to 100 degrees expected.

WHERE: A portion of southwest California.

WHEN: From 10 AM Saturday to 8 PM PDT Sunday.

IMPACTS: Hot temperatures may cause heat illnesses.
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Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. Monitor the latest forecasts and warnings for updates. If you do not have air conditioning in your home or lack shelter, you can call 2 1 1 for assistance locating appropriate shelter from the heat.
Updated: Aug 9, 4:06 PM Source: NWS Alert