Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
January | 39°F | 58°F | 48°F | 3.3" |
February | 43°F | 62°F | 52°F | 3.0" |
March | 45°F | 67°F | 54°F | 1.8" |
April | 47°F | 71°F | 57°F | 1.9" |
May | 52°F | 78°F | 63°F | 0.6" |
June | 56°F | 85°F | 68°F | 0.0" |
July | 58°F | 90°F | 71°F | 0.0" |
August | 57°F | 90°F | 70°F | 0.0" |
September | 56°F | 86°F | 68°F | 0.0" |
October | 50°F | 77°F | 62°F | 1.4" |
November | 45°F | 68°F | 55°F | 1.2" |
December | 40°F | 57°F | 47°F | 2.3" |
Index | Richmond | California | National |
Air quality index | 40 | 55 | 42 |
Pollution index | 8,232,360 | 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 | 0.060% |
Carbon Tetrachloride | 0.000% |
Lead | 0.010% |
Mercury | 0.010% |
City | Population | Air Quality Index | National Avg. |
San Francisco, CA | 874,784 | 40 | 20.0% |
Kentfield, CA | 7,423 | 40 | 20.0% |
Muir Beach, CA | 360 | 40 | 20.0% |
Tamalpais-Homestead Valley, CA | 12,331 | 40 | 20.0% |
Hercules, CA | 26,090 | 40 | 20.0% |
Richmond, CA | 110,051 | 40 | 20.0% |
City | Population | Air Quality Index | National Avg. |
Lakeland, FL | 110,335 | 36 | 28.0% |
Billings, MT | 109,705 | 21 | 58.0% |
Gresham, OR | 110,456 | 38 | 24.0% |
St. John's, NL | 109,566 | n/a | |
Miami Gardens, FL | 110,767 | 41 | 18.0% |
Richmond, CA | 110,051 | 40 | 20.0% |