On July 7, 2015, NWS implemented changes to the icons depicted on all of its point-forecast pages. Changes include new icon images with increased clarity, 6-hour increments for rapidly changing weather and new color blocks to highlight forecast hazards.

A page depicting all of the new icon images can be accessed here: www.weather.gov/forecast-icons

Changes to the icons were based on analysis of 6,700 public comments collected in 2014. Also, many of these changes are based on the results of a research project led by the National Center for Atmospheric Research.

Users are encouraged to continue to provide comments regarding these changes via email at icons@noaa.gov. NWS will continue to analyze incoming feedback and refine the icons as necessary. Any substantial change to the icons will be facilitated through the NWS public comment/review process.

Heat Wave in Central U.S.

Dangerous heat will continue in the Nation's mid-section on Tuesday. Combined with high humidity, this will lead to Heat Index temperatures ranging from 100 to 110 degrees Fahrenheit across parts of the Plains and mid-South. Heat Advisories and Excessive Heat Warnings are in effect. If you must be outside, slow down and drink plenty of water.

Hazardous Weather Conditions

Current conditions at

Boston, Logan International Airport (KBOS)

Lat: 42.36°NLon: 71.01°WElev: 20ft.

Partly Cloudy



Humidity 93%
Wind Speed SW 8 mph
Barometer 29.98 in (1015.2 mb)
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Last update 28 Jul 5:54 am EDT

Detailed Forecast

Partly sunny. Isolated showers and thunderstorms this morning...then scattered thunderstorms with isolated showers this afternoon. Patchy fog this morning. Some thunderstorms may produce gusty winds and heavy rainfall this afternoon. Highs in the upper 80s. Southwest winds around 5 mph...becoming east this afternoon. Chance of rain 40 percent.
Partly cloudy. Scattered thunderstorms in the evening. Some thunderstorms may produce gusty winds and heavy rainfall in the evening. Humid with lows around 70. South winds 5 to 10 mph... Becoming west after midnight. Chance of precipitation 30 percent.
Mostly sunny. Hot. Humid with highs in the lower 90s. West winds around 5 mph...becoming southeast in the afternoon.
Wednesday Night
Partly cloudy. Humid with lows in the lower 70s. Southwest winds 5 to 10 mph.
Mostly sunny. Humid with highs in the upper 80s. Southwest winds 5 to 10 mph.
Thursday Night
Mostly cloudy with a chance of showers and thunderstorms. Lows in the lower 70s. Chance of rain 40 percent.
Friday Through Saturday
Mostly clear. Highs in the upper 80s. Lows around 70.
Saturday Night Through Sunday Night
Partly cloudy. Lows around 70. Highs in the upper 80s.
Partly sunny with a 40 percent chance of showers. Highs in the upper 80s.

  Click Map For Detailed Forecast
415 AM EDT TUE JUL 28 2015
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Graph

National Digital Forecast Database