❮
Today Hourly 7 days 30 days Air Quality
❯
Hourly Weather | Today › Sunday, October 4, 2026
Active Weather Warnings
El Monte, California
3 PM
Sunny Weather
106°
Feels Like 108°
0
Humidity: 16%
UV Index: 4
Wind: 7 mph
4 PM
Sunny Weather
104°
Feels Like 104°
0
Humidity: 18%
UV Index: 3
Wind: 8 mph
5 PM
Sunny Weather
100°
Feels Like 100°
0
Humidity: 19%
UV Index: 2
Wind: 8 mph
6 PM
Sunny Weather
99°
Feels Like 97°
0
Humidity: 21%
UV Index: 1
Wind: 7 mph
7 PM
Night
95°
Feels Like 93°
0
Humidity: 25%
UV Index: 0
Wind: 6 mph
8 PM
Night
91°
Feels Like 90°
0
Humidity: 29%
UV Index: 0
Wind: 4 mph
9 PM
Night
90°
Feels Like 88°
0
Humidity: 32%
UV Index: 0
Wind: 5 mph
10 PM
Night
88°
Feels Like 84°
0
Humidity: 35%
UV Index: 0
Wind: 5 mph
11 PM
Night
84°
Feels Like 82°
0
Humidity: 38%
UV Index: 0
Wind: 5 mph

Hourly Air Quality Forecast - AQI (US EPA)

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

Pollutant Concentrations:

  • PM2.5: 25.96 µg/m³
  • PM10: 40.75 µg/m³
  • O3: 0.056 ppm
  • NO2: 0.3 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.

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

Pollutant Concentrations:

  • PM2.5: 26.35 µg/m³
  • PM10: 41.28 µg/m³
  • O3: 0.058 ppm
  • NO2: 0.3 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.

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

Pollutant Concentrations:

  • PM2.5: 25.83 µg/m³
  • PM10: 41.14 µg/m³
  • O3: 0.058 ppm
  • NO2: 0.3 ppb
  • SO2: 0.2 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 25.14 µg/m³
  • PM10: 41.16 µg/m³
  • O3: 0.058 ppm
  • NO2: 0.4 ppb
  • SO2: 0.2 ppb
  • CO: 0.14 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: 24.38 µg/m³
  • PM10: 41 µg/m³
  • O3: 0.057 ppm
  • NO2: 0.4 ppb
  • SO2: 0.2 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 23.54 µg/m³
  • PM10: 40.78 µg/m³
  • O3: 0.056 ppm
  • NO2: 0.3 ppb
  • SO2: 0.2 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 22.62 µg/m³
  • PM10: 40.16 µg/m³
  • O3: 0.055 ppm
  • NO2: 0.3 ppb
  • SO2: 0.2 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 21.93 µg/m³
  • PM10: 39.02 µg/m³
  • O3: 0.054 ppm
  • NO2: 0.3 ppb
  • SO2: 0.2 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 21.29 µg/m³
  • PM10: 37.82 µg/m³
  • O3: 0.053 ppm
  • NO2: 0.3 ppb
  • SO2: 0.2 ppb
  • CO: 0.13 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 El Monte

Severe Future Likely

Extreme Heat Watch

Extreme Heat Watch issued September 30 at 9:46AM PDT until October 8 at 8:00PM PDT by NWS Los Angeles/Oxnard CA
Oct 2, 10:00 AM → Oct 8, 8:00 PM
WHAT: Dangerously hot conditions with temperatures up to 90 at the
coast and 105 in the valleys.

WHERE: Coast and valleys of Los Angeles and Ventura Counties.

WHEN: From Friday morning through Thursday, October 08.

IMPACTS: Heat related illnesses increase significantly during
extreme heat events.

ADDITIONAL DETAILS: Very hot temperatures are likely to continue
into the second week of October, possibly requiring an extension of
this product.
+ Read More
Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Do not leave young children and pets in unattended vehicles. Car interiors will reach lethal temperatures in a matter of minutes.
Updated: Oct 1, 11:00 AM Source: NWS Alert
Severe Expected Likely

Extreme Heat Warning

Extreme Heat Warning issued October 4 at 11:04AM PDT until October 8 at 8:00PM PDT by NWS Los Angeles/Oxnard CA
Oct 4, 11:04 AM → Oct 8, 8:00 PM
WHAT: Dangerously hot conditions with temperatures reaching 90 to
100 at the coast and 106 in the valleys.

WHERE: Coast and valleys of Los Angeles and Ventura Counties.

WHEN: Until 8 PM PDT Thursday.

IMPACTS: Heat related illnesses increase significantly during
extreme heat events.
+ 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: Oct 4, 2:06 PM Source: NWS Alert

Explore U.S. Weather Trends

❄️ Coldest Cities in the U.S. – Live Temperature Rankings 🔥 Hottest Cities Today – Real-Time Heat Observations ⚠️ Active Weather Alerts – Warnings, Watches & Advisories 🌪️ Windiest Cities – Highest Sustained Wind Speeds 🌫️ Worst Air Quality – Cities with the Highest AQI 🍃 Best Air Quality – Cities with the Lowest AQI