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HRF forecast value available for each contest, with detailed data throughout the game.
Detailed weather data and hourly index data for each park.
Current Weather Conditions and HRF Index
The table below shows the Home Run Forecast Index (HRFI) value for each big league ballpark. The HRFI ranges from 1 to 10, with 10 indicating the most favorable weather conditions for ball fight and 1 indicating least favorable. Learn more about how we calculate this index here.
This data is updated hourly at the top of the hour. For ballparks with a retractable roof, the index is calculated for open roof conditions. Check local sources for roof status. For ballparks with a permanent roof, the index is calculated for indoor conditions.
| Ballpark Location | Sky Cover | Temperature (°F) | Home Run Forecast Index™ | |
|---|---|---|---|---|
| Phoenix, AZ |  few clouds | 88 | 9 | |
| Anaheim, CA |  clear sky | 71 | 8 | |
| Atlanta, GA |  broken clouds | 79 | 8 | |
| Houston, TX |  scattered clouds | 80 | 8 | |
| Los Angeles, CA | clear sky | 69 | 8 | |
| Tampa, FL | few clouds | 82 | 8 | |
| San Diego, CA | clear sky | 72 | 6 | |
| Tampa Bay, FL | clear sky | 80 | 5 | |
| Miami, FL | broken clouds | 81 | 4 | |
| Sacramento, CA | clear sky | 67 | 4 | |
| San Francisco, CA | overcast clouds | 68 | 4 | |
| Arlington, TX | overcast clouds | 71 | 3 | |
| Baltimore, MD | overcast clouds | 51 | 3 | |
| Bronx, NY | scattered clouds | 51 | 3 | |
| Philadelphia, PA | overcast clouds | 51 | 3 | |
| Queens, NY | broken clouds | 52 | 3 | |
| Washington, DC | overcast clouds | 54 | 3 | |
| Boston, MA | broken clouds | 43 | 1 | |
| Chicago (AL), IL | scattered clouds | 38 | 1 | |
| Chicago (NL), IL | scattered clouds | 38 | 1 | |
| Cincinnati, OH | overcast clouds | 44 | 1 | |
| Cleveland, OH | overcast clouds | 35 | 1 | |
| Denver, CO | overcast clouds | 43 | 1 | |
| Detroit, MI | clear sky | 35 | 1 | |
| Kansas City, MO | overcast clouds | 49 | 1 | |
| Milwaukee, WI | broken clouds | 38 | 1 | |
| Minneapolis, MN | scattered clouds | 35 | 1 | |
| Pittsburgh, PA | overcast clouds | 43 | 1 | |
| Seattle, WA | clear sky | 48 | 1 | |
| St. Louis, MO | overcast clouds | 47 | 1 | |
| Toronto, ON | clear sky | 30 | 1 |
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