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Hourly Weather | Today › Wednesday, March 18, 2026
Active Weather Warnings
Pomona, California
6 AM
Cloudy Night
66°
Feels Like 63°
7
Humidity: 42%
UV Index: 0
Wind: 6 mph
7 AM
Cloudy Weather
64°
Feels Like 63°
5
Humidity: 45%
UV Index: 0
Wind: 6 mph
8 AM
Sunny Weather
68°
Feels Like 66°
0
Humidity: 35%
UV Index: 1
Wind: 6 mph
9 AM
Sunny Weather
73°
Feels Like 75°
0
Humidity: 30%
UV Index: 2
Wind: 5 mph
10 AM
Sunny Weather
79°
Feels Like 82°
0
Humidity: 25%
UV Index: 3
Wind: 5 mph
11 AM
Sunny Weather
86°
Feels Like 90°
0
Humidity: 21%
UV Index: 4
Wind: 6 mph
12 PM
Sunny Weather
90°
Feels Like 93°
0
Humidity: 19%
UV Index: 6
Wind: 7 mph
1 PM
Sunny Weather
93°
Feels Like 97°
0
Humidity: 17%
UV Index: 6
Wind: 8 mph
2 PM
Sunny Weather
97°
Feels Like 99°
0
Humidity: 16%
UV Index: 6
Wind: 9 mph
3 PM
Sunny Weather
99°
Feels Like 100°
0
Humidity: 15%
UV Index: 4
Wind: 9 mph
4 PM
Sunny Weather
97°
Feels Like 97°
0
Humidity: 16%
UV Index: 3
Wind: 10 mph
5 PM
Cloudy Weather
93°
Feels Like 93°
0
Humidity: 19%
UV Index: 2
Wind: 10 mph
6 PM
Sunny Weather
91°
Feels Like 90°
0
Humidity: 21%
UV Index: 1
Wind: 9 mph
7 PM
Sunny Weather
86°
Feels Like 82°
0
Humidity: 26%
UV Index: 0
Wind: 8 mph
8 PM
Night
82°
Feels Like 81°
0
Humidity: 30%
UV Index: 0
Wind: 7 mph
9 PM
Night
79°
Feels Like 77°
0
Humidity: 34%
UV Index: 0
Wind: 6 mph
10 PM
Night
75°
Feels Like 73°
0
Humidity: 37%
UV Index: 0
Wind: 5 mph
11 PM
Night
73°
Feels Like 72°
0
Humidity: 48%
UV Index: 0
Wind: 4 mph

Hourly Air Quality Forecast - AQI (US EPA)

6 AM
80 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 26.06 µg/m³
  • PM10: 36.4 µg/m³
  • O3: 0.041 ppm
  • NO2: 0.4 ppb
  • SO2: 0.2 ppb
  • CO: 0.17 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

7 AM
80 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 26.08 µg/m³
  • PM10: 36.29 µg/m³
  • O3: 0.040 ppm
  • NO2: 0.4 ppb
  • SO2: 0.2 ppb
  • CO: 0.17 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

8 AM
80 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 26.01 µg/m³
  • PM10: 36.01 µg/m³
  • O3: 0.039 ppm
  • NO2: 0.5 ppb
  • SO2: 0.2 ppb
  • CO: 0.17 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

9 AM
80 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 25.85 µg/m³
  • PM10: 35.52 µg/m³
  • O3: 0.038 ppm
  • NO2: 0.5 ppb
  • SO2: 0.2 ppb
  • CO: 0.17 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

10 AM
80 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 26.08 µg/m³
  • PM10: 35.53 µg/m³
  • O3: 0.039 ppm
  • NO2: 0.6 ppb
  • SO2: 0.2 ppb
  • CO: 0.17 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

11 AM
82 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 26.96 µg/m³
  • PM10: 36.29 µg/m³
  • O3: 0.041 ppm
  • NO2: 0.8 ppb
  • SO2: 0.3 ppb
  • CO: 0.18 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

12 PM
84 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 28.02 µg/m³
  • PM10: 37.26 µg/m³
  • O3: 0.045 ppm
  • NO2: 0.7 ppb
  • SO2: 0.4 ppb
  • CO: 0.18 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

1 PM
85 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 28.33 µg/m³
  • PM10: 37.39 µg/m³
  • O3: 0.047 ppm
  • NO2: 0.5 ppb
  • SO2: 0.3 ppb
  • CO: 0.18 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

2 PM
84 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 27.71 µg/m³
  • PM10: 36.56 µg/m³
  • O3: 0.047 ppm
  • NO2: 0.3 ppb
  • SO2: 0.2 ppb
  • CO: 0.18 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

3 PM
81 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 26.29 µg/m³
  • PM10: 35.27 µg/m³
  • O3: 0.047 ppm
  • NO2: 0.3 ppb
  • SO2: 0.2 ppb
  • CO: 0.17 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

4 PM
78 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 24.96 µg/m³
  • PM10: 34.45 µg/m³
  • O3: 0.047 ppm
  • NO2: 0.3 ppb
  • SO2: 0.2 ppb
  • CO: 0.16 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

5 PM
76 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 24.24 µg/m³
  • PM10: 34.19 µg/m³
  • O3: 0.050 ppm
  • NO2: 0.4 ppb
  • SO2: 0.2 ppb
  • CO: 0.15 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

6 PM
76 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 24 µg/m³
  • PM10: 33.62 µg/m³
  • O3: 0.053 ppm
  • NO2: 0.6 ppb
  • SO2: 0.3 ppb
  • CO: 0.15 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

7 PM
76 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 24.27 µg/m³
  • PM10: 33.79 µg/m³
  • O3: 0.055 ppm
  • NO2: 0.8 ppb
  • SO2: 0.3 ppb
  • CO: 0.15 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

8 PM
77 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 24.61 µg/m³
  • PM10: 34.34 µg/m³
  • O3: 0.054 ppm
  • NO2: 0.9 ppb
  • SO2: 0.3 ppb
  • CO: 0.16 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

9 PM
78 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 24.98 µg/m³
  • PM10: 34.88 µg/m³
  • O3: 0.053 ppm
  • NO2: 0.9 ppb
  • SO2: 0.3 ppb
  • CO: 0.16 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

10 PM
78 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 25.17 µg/m³
  • PM10: 35.16 µg/m³
  • O3: 0.051 ppm
  • NO2: 0.8 ppb
  • SO2: 0.3 ppb
  • CO: 0.16 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

11 PM
78 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 25.11 µg/m³
  • PM10: 35.19 µg/m³
  • O3: 0.050 ppm
  • NO2: 0.6 ppb
  • SO2: 0.2 ppb
  • CO: 0.15 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

Current Real-Time Air Quality Report

Weather Alerts and Warnings for Pomona

Severe Future Likely

Extreme Heat Watch

Extreme Heat Watch issued March 15 at 12:07AM PDT until March 20 at 8:00PM PDT by NWS Los Angeles/Oxnard CA
Mar 16, 8:00 PM → Mar 20, 8:00 PM
WHAT: For the Heat Advisory, temperatures of 82 to 98 expected..
For the Extreme Heat Watch, dangerously hot conditions with
temperatures of 90 to 104 are possible.

WHERE: A portion of southwest California.

WHEN: For the Heat Advisory, from 10 AM to 8 PM PDT Monday. For
the Extreme Heat Watch, from Monday evening through Friday evening.

IMPACTS: There is a high risk for dangerous heat illness for
anyone, especially for the very young, the very old, those without
air conditioning, and those active outdoors. There is a high risk
for heat illness for sensitive populations including the very
young, the very old, those without air conditioning, and those
active outdoors.
+ Read More
Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.
Updated: Mar 15, 10:26 AM Source: NWS Alert
Severe Expected Likely

Extreme Heat Warning

Extreme Heat Warning issued March 18 at 1:48AM PDT until March 20 at 8:00PM PDT by NWS Los Angeles/Oxnard CA
Mar 18, 1:48 AM → Mar 20, 8:00 PM
WHAT: Dangerously hot conditions with temperatures between 96 and
104 expected.

WHERE: A portion of southwest California.

WHEN: Until 8 PM PDT Friday.

IMPACTS: There is a high risk for dangerous heat illness for
anyone, especially for the very young, the very old, those without
air conditioning, and those active outdoors.

ADDITIONAL DETAILS: Warm overnight low temperatures will
contribute to the heat risk, especially in the mountain and
foothill locations.
+ Read More
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.
Updated: Mar 18, 4:50 AM Source: NWS Alert

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