Weather for East Haddam, Connecticut
Current Weather
Five Day Weather Forecast
Tue
H: 93°F
L: 64°F
Wed
H: 89°F
L: 60°F
Thu
H: 66°F
L: 49°F
Fri
H: 67°F
L: 43°F
Sat
H: 59°F
L: 50°F
Air Quality
Nitrogen Dioxide: 3.65 μg/m3
Sulphur Dioxide: 2.15 μg/m3
Ozone: 151 μg/m3
Astronomical
Sun Transit: 12:45 AM
Sunset: 8:06 PM
Daylight: 14 hrs 39 mins
Moon Transit: 3:49 PM
Moonset: 11:52 PM
Moon Phase: Waxing Crescent
Moon Illumination: 7.4%
Best Times for Fishing or Hunting
Major Periods
5:14 AM - 7:44 AM3:19 PM - 5:49 PM
Minor Periods
12:00 AM - 12:00 AM7:09 AM - 8:39 AM
Action Rating: 3 out of 5
Air Quality Alert issued May 18 at 11:35PM EDT by NWS Upton NY
Non-Weather Emergency Message. Not sent to IPAWS.
Effective: Mon May 18, 2026, 11:35 PM
Expires: Tue May 19, 2026, 11:00 PM
The Connecticut Department of Energy and Environmental Protection has issued an Air Quality Action Day for the following counties: Fairfield, New Haven, Middlesex. from 11 AM to 11 PM EDT Tuesday. An Air Quality Action Day means that Ground Level Ozone within the region may approach or exceed unhealthy standards. For additional information, please visit the Connecticut Department of Energy and Environmental Protection Web site at http://www.ct.gov/deep/aqi
Heat Advisory issued May 19 at 1:59AM EDT until May 20 at 8:00PM EDT by NWS Boston/Norton MA
Effective: Tue May 19, 2026, 1:59 AM
Expires: Tue May 19, 2026, 5:00 PM
* WHAT...Heat index values up to 96 expected. * WHERE...Much of Southern New England, except for the eastern slopes of the Berkshires, the Rhode Island and Massachusetts South Coast, Cape Cod and the Islands. * WHEN...From 11 AM this morning to 8 PM EDT Wednesday. * IMPACTS...Hot temperatures, a moderate degree of humidity with little relief Tuesday night may cause heat illnesses.
Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke.
Air Quality Alert issued May 18 at 11:21PM EDT by NWS Boston/Norton MA
Non-Weather Emergency Message. Not sent to IPAWS.
Effective: Mon May 18, 2026, 11:21 PM
Expires: Tue May 19, 2026, 11:15 PM
The Connecticut Department of Environmental Protection has issued an Air Quality Alert Day for Ground Level Ozone, from 11 AM to 11 PM EDT Tuesday. An Air Quality Alert day means that Ground Level Ozone concentrations within the region may approach or exceed unhealthy standards. For additional information, please visit the Connecticut Department of Energy and Environmental Protection website at: https://portal.ct.gov/deep
Air Quality Alert issued May 18 at 11:21PM EDT by NWS Boston/Norton MA
Non-Weather Emergency Message. Not sent to IPAWS.
Effective: Mon May 18, 2026, 11:21 PM
Expires: Tue May 19, 2026, 11:15 PM
The Rhode Island Department of Environmental Management has issued an Air Quality Alert Day for Ground Level Ozone, from 11 AM to 11 PM EDT Tuesday. An Air Quality Alert day means that Ground Level Ozone concentrations within the region may approach or exceed unhealthy standards. For additional information, please visit the Rhode Island Department of Environmental Management website at: https://dem.ri.gov/environmental-protection-bureau/air- resources/air-quality-forecast
Weather Forecast
Air Quality
Nitrogen Dioxide: 7.55 μg/m3
Sulphur Dioxide: 2.15 μg/m3
Ozone: 109.6 μg/m3
Astronomical
Sun Transit: 12:45 AM
Sunset: 8:06 PM
Daylight: 14 hrs 39 mins
Moon Transit: 3:49 PM
Moonset: 11:52 PM
Moon Phase: Waxing Crescent
Moon Illumination: 7.4%
Best Times for Fishing or Hunting
Major Periods
5:14 AM - 7:44 AM3:19 PM - 5:49 PM
Minor Periods
12:00 AM - 12:00 AM7:09 AM - 8:39 AM
Action Rating: 3 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 8.65 μg/m3
Sulphur Dioxide: 2 μg/m3
Ozone: 94.04 μg/m3
Astronomical
Sun Transit: 12:45 AM
Sunset: 8:07 PM
Daylight: 14 hrs 41 mins
Moon Transit: 4:51 PM
Moonset: 12:52 AM
Moon Phase: Waxing Crescent
Moon Illumination: 14.4%
Best Times for Fishing or Hunting
Major Periods
6:18 AM - 8:48 AM4:21 PM - 6:51 PM
Minor Periods
8:26 AM - 9:56 AM12:00 AM - 12:00 AM
Action Rating: 2 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 4.39 μg/m3
Sulphur Dioxide: 1.18 μg/m3
Ozone: 73.64 μg/m3
Astronomical
Sun Transit: 12:45 AM
Sunset: 8:08 PM
Daylight: 14 hrs 43 mins
Moon Transit: 5:47 PM
Moonset: 12:35 AM
Moon Phase: Waxing Crescent
Moon Illumination: 23.2%
Best Times for Fishing or Hunting
Major Periods
7:17 AM - 9:47 AM5:17 PM - 7:47 PM
Minor Periods
9:44 AM - 11:14 AM12:05 AM - 1:35 AM
Action Rating: 3 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 7.53 μg/m3
Sulphur Dioxide: 1.52 μg/m3
Ozone: 74.84 μg/m3
Astronomical
Sun Transit: 12:46 AM
Sunset: 8:09 PM
Daylight: 14 hrs 45 mins
Moon Transit: 6:38 PM
Moonset: 1:08 AM
Moon Phase: Waxing Crescent
Moon Illumination: 33.4%
Best Times for Fishing or Hunting
Major Periods
8:10 AM - 10:40 AM6:08 PM - 8:38 PM
Minor Periods
10:58 AM - 12:28 AM12:38 AM - 2:08 AM
Action Rating: 3 out of 5
Weather Forecast
Air Quality
Nitrogen Dioxide: 8.27 μg/m3
Sulphur Dioxide: 1.48 μg/m3
Ozone: 69.54 μg/m3
Astronomical
Sun Transit: 12:46 AM
Sunset: 8:09 PM
Daylight: 14 hrs 46 mins
Moon Transit: 7:25 PM
Moonset: 1:35 AM
Moon Phase: First Quarter
Moon Illumination: 44.4%
Best Times for Fishing or Hunting
Major Periods
8:58 AM - 11:28 AM6:55 PM - 9:25 PM
Minor Periods
12:10 AM - 1:40 PM1:05 AM - 2:35 AM
Action Rating: 2 out of 5