Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
January | 35°F | 49°F | 41°F | 7.8" |
February | 35°F | 47°F | 40°F | 8.4" |
March | 36°F | 49°F | 41°F | 10.1" |
April | 38°F | 54°F | 45°F | 5.7" |
May | 46°F | 62°F | 53°F | 3.7" |
June | 55°F | 71°F | 62°F | 1.4" |
July | 64°F | 79°F | 71°F | 0.1" |
August | 63°F | 79°F | 70°F | 0.1" |
September | 58°F | 74°F | 65°F | 1.4" |
October | 48°F | 63°F | 54°F | 4.8" |
November | 40°F | 53°F | 46°F | 7.3" |
December | 34°F | 46°F | 39°F | 11.7" |
Index | Little Grass Valley | California | National |
Air quality index | 46 | 55 | 42 |
Pollution index | 1,799,830 | 10,473,190 | 2,726,193 |
Measurement | Total |
Days measured | 365 |
Days with good air quality | 224 |
Days with moderate air quality | 136 |
Days w/ poor A.Q. for sensitive groups | 3 |
Days with unhealthy air quality | 2 |
Pollutant | Total |
Arsenic | 0.010% |
Benzene | 0.030% |
Carbon Tetrachloride | 0.000% |
Lead | 0.010% |
Mercury | 0.004% |
City | Population | Air Quality Index | National Avg. |
Goodyears Bar, CA | 80 | 44 | 12.0% |
Greenhorn, CA | 202 | 44 | 12.0% |
Cromberg, CA | 312 | 44 | 12.0% |
Spring Garden, CA | 19 | 44 | 12.0% |
Clipper Mills, CA | 451 | 44 | 12.0% |
Little Grass Valley, CA | 0 | 46 | 8.0% |
City | Population | Air Quality Index | National Avg. |
Chase, AK | 0 | 31 | 38.0% |
Chiniak, AK | 0 | 31 | 38.0% |
Chisana, AK | 0 | 31 | 38.0% |
Dot Lake, AK | 0 | 38 | 24.0% |
Eureka Roadhouse, AK | 0 | 31 | 38.0% |
Little Grass Valley, CA | 0 | 46 | 8.0% |