Today | Weather | Tuesday, August 4, 2026
Active Weather Warnings

Weather in Fresno, California

01:33 PM
Now
Sunny Weather
102° F
Feels Like 111°
Precipitation 0 %
Wind 4 mph
UV Index (0 - 11+) 9
Humidity 17 %
Today
Hot Day
Day 108°
Night 72°
Precipitation 0 %
Wind 2 mph
UV Index (0 - 11+) 10

Warning: High UV Index Today: 10

High risk of harm from unprotected sun exposure. Take precautions: wear a hat, sunglasses, and apply sunscreen regularly if you’ll be outdoors for extended periods.

Fresno Weather Forecast Updated

58 minutes ago
Last updated on
Weather Forecast History
Last Year's Weather on This Day (August 4, 2025)
Night

Day

91°

Night

61°

Wind

9 mph

Precipitation

0 %

Air Quality in Fresno

NOW
59 AQI
Moderate air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 3.34 µg/m³
PM10 5.95 µg/m³
O3 0.057 ppm
NO2 0.3 ppb
SO2 0.1 ppb
CO 0.07 ppm
NH3 0.28 µg/m³
NO 0.09 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 acceptable; however, for some pollutants, there may be a moderate health concern for a very small number of people who are unusually sensitive to air pollution.

Show raw pollutant concentrations (µg/m³)
PM2.53.34 µg/m³
PM105.95 µg/m³
O3111.85 µg/m³
NO20.48 µg/m³
SO20.3 µg/m³
CO80.71 µg/m³
NH30.28 µg/m³
NO0.09 µg/m³

Weather Alerts and Warnings for Fresno

Moderate Expected Likely

Heat Advisory

Heat Advisory issued August 4 at 12:32PM PDT until August 5 at 8:00PM PDT by NWS Hanford CA
Aug 4, 12:32 PM Aug 5, 8:00 PM
WHAT: Afternoon high temperatures up to 106 degrees expected. Heat
Risk will range from Moderate to Major.

WHERE: San Joaquin Valley and adjacent foothills, Lake Isabella,
and the Kern River Valley.

WHEN: Until 8 PM PDT Wednesday.

IMPACTS: Hot temperatures and limited overnight relief may cause
heat illnesses.

ADDITIONAL DETAILS: Afternoon high temperatures up to 106 degrees
will occur today until Wednesday. Overnight lows will range from
the upper 60s in some valley locations to the lower 80s in some of
the higher foothills.
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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. 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.
Updated: Aug 4, 12:35 PM Source: NWS Alert