Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
January | 42°F | 58°F | 50°F | 3.5" |
February | 46°F | 61°F | 53°F | 3.3" |
March | 46°F | 64°F | 54°F | 2.6" |
April | 48°F | 66°F | 56°F | 1.8" |
May | 52°F | 69°F | 59°F | 0.6" |
June | 56°F | 73°F | 62°F | 0.1" |
July | 57°F | 75°F | 64°F | 0.0" |
August | 58°F | 76°F | 64°F | 0.0" |
September | 57°F | 76°F | 64°F | 0.2" |
October | 53°F | 72°F | 61°F | 1.4" |
November | 48°F | 66°F | 56°F | 1.3" |
December | 42°F | 58°F | 49°F | 3.2" |
Index | Norris Canyon | California | National |
Air quality index | 40 | 55 | 42 |
Pollution index | 6,427,290 | 10,473,190 | 2,726,193 |
Measurement | Total |
Days measured | 365 |
Days with good air quality | 290 |
Days with moderate air quality | 74 |
Days w/ poor A.Q. for sensitive groups | 1 |
Days with unhealthy air quality | 0 |
Pollutant | Total |
Arsenic | 0.010% |
Benzene | 0.110% |
Carbon Tetrachloride | 0.010% |
Lead | 0.010% |
Mercury | 0.003% |
City | Population | Air Quality Index | National Avg. |
Castle Hill, CA | 1,164 | 40 | 20.0% |
Orinda, CA | 19,461 | 40 | 20.0% |
San Miguel CDP (San Luis Obispo County), CA | 2,696 | 40 | 20.0% |
Blackhawk, CA | 10,590 | 40 | 20.0% |
Danville, CA | 44,933 | 40 | 20.0% |
Norris Canyon, CA | 790 | 40 | 20.0% |
City | Population | Air Quality Index | National Avg. |
McKenzie, AL | 790 | 52 | 4.0% |
Jetmore, KS | 790 | 15 | 70.0% |
McRoberts, KY | 790 | 45 | 10.0% |
Cedar Grove, NM | 790 | 53 | 6.0% |
Dexter, NY | 790 | 35 | 30.0% |
Norris Canyon, CA | 790 | 40 | 20.0% |