TODAY JUN19
TEMPERATURE64
HUMIDITY67
PRESSURE29.98
WIND COND.290 8.1
  • 9354Wed
  • 9657Thu
  • 10162Fri
  • 10465Sat
  • 9758Sun
daynightWeather update from Stockton, Stockton Metropolitan Airport at

Waterloo Average Weather

In the event that the weather data was unavailable for this city, estimates based upon nearby cities were used.
MonthTemp. (min)Temp. (max)Temp. (avg)Precipitation
January19°F70°F46°F3.0"
February28°F74°F51°F2.2"
March32°F87°F55°F1.7"
April32°F97°F59°F1.2"
May41°F106°F68°F0.4"
June48°F110°F73°F0.1"
July51°F115°F79°F0.1"
August50°F108°F77°F0.1"
September45°F104°F72°F0.4"
October37°F96°F63°F0.6"
November30°F82°F54°F0.7"
December23°F69°F46°F2.1"

Did you know?

  • The highest monthly average temperature in Waterloo for July is 79 degrees.
  • The lowest monthly average temperature in Waterloo for January is 46 degrees.
  • The most monthly precipitation in Waterloo occurs in January with 3 inches.
  • The air quality index in Waterloo is 14% worse than the national average.
  • The pollution index in Waterloo is 61% better than the national average.

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Compare Waterloo, CA Weather To Other Cities

Waterloo air quality index & pollution index

In the event that the air quality/pollution data was unavailable for this city, estimates based upon nearby cities were used.
IndexWaterlooCaliforniaNational
Air quality index575550
Pollution index1,947,80018,106,7265,066,862

Waterloo air quality information

MeasurementTotal
Days measured365
Days with good air quality128
Days with moderate air quality207
Days w/ poor A.Q. for sensitive groups21
Days with unhealthy air quality9

Waterloo air quality information

PollutantTotal
Arsenic0.003%
Benzene0.030%
Carbon Tetrachloride0.000%
Lead0.010%
Mercury0.000%

Average monthly Waterloo temperature with heat index

Waterloo monthly precipitation with daily maximum

Waterloo monthly snow depth with daily maximum

Waterloo monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.
Valley Home, CA2665510%
Camanche North Shore, CA9235714%
Farmington, CA975714%
Lathrop, CA20,3315714%
Lodi, CA63,8425714%
Waterloo, CA4965714%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Mitchell Heights, WV4963432%
Buffalo, KY4964314%
Hawkeye, IA4964314%
North Rose, NY4963628%
New Melle, MO4966020%
Waterloo, CA4965714%
Source: The Waterloo, CA weather data displayed above is derived from the NOAA (National Oceanic and Atmospheric). Air quality and pollution data is derived from the EPA (United States Environmental Protection Agency). Air quality and pollution levels measured in a particular area may not be representative of the entire county.