Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
January | 35°F | 53°F | 44°F | 6.0" |
February | 40°F | 56°F | 49°F | 6.4" |
March | 41°F | 57°F | 50°F | 6.8" |
April | 40°F | 56°F | 49°F | 5.8" |
May | 45°F | 59°F | 53°F | 3.6" |
June | 47°F | 61°F | 55°F | 3.9" |
July | 52°F | 65°F | 58°F | 1.0" |
August | 50°F | 63°F | 56°F | 0.3" |
September | 46°F | 63°F | 54°F | 0.4" |
October | 44°F | 61°F | 53°F | 5.6" |
November | 40°F | 58°F | 49°F | 4.0" |
December | 39°F | 54°F | 47°F | 11.4" |
Index | Eureka | California | National |
Air quality index | 27 | 55 | 42 |
Pollution index | 5,642,310 | 10,473,190 | 2,726,193 |
Measurement | Total |
Days measured | 363 |
Days with good air quality | 353 |
Days with moderate air quality | 10 |
Days w/ poor A.Q. for sensitive groups | 0 |
Days with unhealthy air quality | 0 |
Pollutant | Total |
Arsenic | 0.060% |
Benzene | 0.080% |
Carbon Tetrachloride | 0.000% |
Lead | 0.050% |
Mercury | 0.050% |
City | Population | Air Quality Index | National Avg. |
Bayview CDP (Contra Costa County), CA | 1,753 | 27 | 46.0% |
Fortuna, CA | 12,135 | 27 | 46.0% |
Myrtletown, CA | 5,143 | 27 | 46.0% |
Ferndale, CA | 1,387 | 27 | 46.0% |
Samoa, CA | 211 | 27 | 46.0% |
Eureka, CA | 26,938 | 27 | 46.0% |
City | Population | Air Quality Index | National Avg. |
Saint-Bruno-de-Montarville, QC | 26,923 | n/a | |
Shoreview, MN | 26,922 | 46 | 8.0% |
Marshalltown, IA | 26,957 | 37 | 26.0% |
Belmont, CA | 26,963 | 43 | 14.0% |
Bristol, TN | 26,973 | 45 | 10.0% |
Eureka, CA | 26,938 | 27 | 46.0% |