Plan 5 days Air + smoke Radar Outdoor planning 1 2
Now
Temperature Rain Humidity Gusts 56° 10 AM 56° 1 PM 54° 5 PM 53° 6 PM 51° 8 PM 51° 11 PM 51° 1 AM 51° 2 AM 52° 6 AM 57° 9 AM
74% 66% 64% 64% 66% 68% 71% 74% 80% 83%
23 mph 23 mph 22 mph 22 mph 20 mph 17 mph 16 mph 14 mph 12 mph 10 mph 8 mph 8 mph 8 mph 8 mph 9 mph 9 mph 10 mph 13 mph 14 mph 16 mph 18 mph 21 mph 24 mph 26 mph
Thu 10:00 AM 56° Sunny 0% rain 74% humidity Gusts 23 mph Thu 11:00 AM 56° Sunny 0% rain 72% humidity Gusts 23 mph Thu 12:00 PM 56° Sunny 0% rain 69% humidity Gusts 22 mph Thu 1:00 PM 56° Sunny 0% rain 66% humidity Gusts 22 mph Thu 2:00 PM 56° Mostly Sunny 0% rain 66% humidity Gusts 20 mph Thu 3:00 PM 54° Sunny 0% rain 66% humidity Gusts 17 mph Thu 4:00 PM 54° Sunny 0% rain 64% humidity Gusts 16 mph Thu 5:00 PM 54° Sunny 0% rain 64% humidity Gusts 14 mph Thu 6:00 PM 53° Mostly Clear 0% rain 64% humidity Gusts 12 mph Thu 7:00 PM 52° Mostly Clear 0% rain 63% humidity Gusts 10 mph Thu 8:00 PM 51° Mostly Clear 0% rain 66% humidity Gusts 8 mph Thu 9:00 PM 51° Partly Cloudy 0% rain 66% humidity Gusts 8 mph Thu 10:00 PM 51° Partly Cloudy 0% rain 66% humidity Gusts 8 mph Thu 11:00 PM 51° Partly Cloudy 0% rain 68% humidity Gusts 8 mph Fri 12:00 AM 50° Partly Cloudy 0% rain 71% humidity Gusts 9 mph Fri 1:00 AM 51° Partly Cloudy 0% rain 71% humidity Gusts 9 mph Fri 2:00 AM 51° Partly Cloudy 0% rain 74% humidity Gusts 10 mph Fri 3:00 AM 51° Partly Cloudy 0% rain 74% humidity Gusts 13 mph Fri 4:00 AM 51° Partly Cloudy 1% rain 77% humidity Gusts 14 mph Fri 5:00 AM 51° Partly Cloudy 1% rain 80% humidity Gusts 16 mph Fri 6:00 AM 52° Mostly Sunny 8% rain 80% humidity Gusts 18 mph Fri 7:00 AM 53° Partly Sunny 14% rain 80% humidity Gusts 21 mph Fri 8:00 AM 55° Slight Chance Rain Showers 21% rain 80% humidity Gusts 24 mph Fri 9:00 AM 57° Chance Rain Showers 37% rain 83% humidity Gusts 26 mph 1 Next best time outsideThu 11:00 AM–9:00 PM 2 hours outside within this window Mild temperatures, some wind, rain unlikely. Watch for: limited daylight. Not checked: UV. 2 Another good timeFri 6:00 AM–10:45 AM 2 hours outside within this window Mild temperatures, some wind, a chance of rain. Watch for: thunder and lightning, limited daylight. Not checked: UV.
A little farther out
The next five days
Today 56° 51°
Fri 66° 50°
Sat 62° 46°
Sun 54° 45°
Mon 58° 49°
Today Today looks breezy.
Rain 0%
Humidity 63–77%
Wind 25 mph Fri Friday has a real shower chance.
Rain 69%
Humidity 71–100%
Wind 33 mph Sat Saturday looks wet for a meaningful stretch.
Rain 81%
Humidity 58–100%
Wind 33 mph Sun Sunday looks fairly quiet.
Rain 7%
Humidity 54–71%
Wind 23 mph Mon Monday looks fairly quiet.
Rain 19%
Humidity 71–93%
Wind 22 mph Today 56° / 51° Today looks breezy. 0% rain · Humidity 63–77% · Wind 25 mph Fri 66° / 50° Friday has a real shower chance. 69% rain · Humidity 71–100% · Wind 33 mph Sat 62° / 46° Saturday looks wet for a meaningful stretch. 81% rain · Humidity 58–100% · Wind 33 mph Sun 54° / 45° Sunday looks fairly quiet. 7% rain · Humidity 54–71% · Wind 23 mph Mon 58° / 49° Monday looks fairly quiet. 19% rain · Humidity 71–93% · Wind 22 mph Environmental watch
Air quality + smoke 21 Good US AQI Good through Sat 12 PM.
Now 21 Good ozone 12 PM 45 Good fine particles Fri 12 PM 35 Good fine particles Sat 12 PM 30 Good fine particles Sky check
No plume detected overhead Satellite view · Updated Thu 8:45 AM Air near ground 21 · Good US AQI
Rain, in motion · Past four hours
Chatham radar
Ready when you are See what is moving toward Chatham. Watch the last four hours of rain, then search any nearby trail, lake, or address.
Radar animation for Chatham, covering the past four hours. A marked spot changes the map view, not the forecast on this page.
Outdoor fire check
Thinking about a backyard fire? Use extra caution. There is no lower-concern three-hour stretch in the next 12 hours.
Next 12 hours Choose a time to see what is driving the concern.
Now Use caution 11 AM Use caution 12 PM Use caution 1 PM Use caution 2 PM Use caution 3 PM Use caution 4 PM Use caution 5 PM Use caution 6 PM Use caution 7 PM Use caution 8 PM Lower concern 9 PM Lower concern Selected time Now Use caution Sustained wind is 17 mph. Gusts may reach 23 mph.
Humidity 74%
Wind 17 mph
Gusts 23 mph Check local rules. Weather is only part of the decision. Check city, county, and land-manager fire restrictions before lighting any outdoor fire.
About these readings Sources and local limits Weather Forecasts, alerts, and radar come from NOAA and the National Weather Service.
Air quality This reading describes Cape Cod and Islands area, about 20 miles away. Conditions can differ at this exact spot.
Smoke Satellite imagery shows smoke overhead. It cannot tell us how much smoke has reached breathing level.