Heat Advisory HEAT ADVISORY - Middlesex County
Air Quality Alert AIR QUALITY ALERT - Middlesex County

Observed at
Lowell, Massachusetts
05-18-2026 11:50 PM

Temperature

61.1°F

Hour Change

-1.9°F

Wet Bulb Temp

56.6°F

Humidity

75%

Hour Change

4%

Dewpoint

53.1°F

Hour Change

-0.3°F

Wind

0 mph from N/A (N/A)

Wind Gust

0 mph

Barometer

30.06 inHg

3 Hour Trend

0.01 inHg

Today's Rain

0.00 in

Current Rain Rate

0.00 in/hr

Last Hour of Rain

0.00 in

Apparent Temp

62.1°F

Wind Chill

61.1°F

Heat Index

60.4°F

Est. Cumulus Base

1993 feet

Today's Highs / Lows

Temperature
Climate Normals

High: 70.5℉ ; Low: 45.6℉

High Temperature

Low Temperature

78.7°F at 01:42 PM

58.7°F at 06:00 AM

High Humidity

Low Humidity

84% at 05:55 AM

38% at 11:49 AM

High Dewpoint

Low Dewpoint

55.2°F at 09:05 PM

47.2°F at 09:14 AM

High Barometer

Low Barometer

30.22 inHg at 09:26 AM

30.04 inHg at 07:12 PM

High Wind Gust

15 mph from 96° at 03:18 PM

High Rain Rate

0.00 in/hr at 12:00 AM

Low Wind Chill

58.7°F at 06:00 AM

High Heat Index

78.1°F at 01:42 PM

Yesterday's Statistics

High Temperature

Low Temperature

88.1°F at 03:53 PM

56.9°F at 05:12 AM

High Humidity

Low Humidity

86% at 05:22 AM

30% at 04:54 PM

High Dewpoint

Low Dewpoint

60.0°F at 02:46 PM

50.2°F at 12:02 AM

High Barometer

Low Barometer

30.06 inHg at 11:59 PM

29.83 inHg at 12:16 AM

High Wind Gust

18 mph from 317° at 04:13 PM

Rain

0.00 in

High Rain Rate

0.00 in/hr at 12:00 AM

Low Wind Chill

56.9°F at 05:12 AM

High Heat Index

87.4°F at 03:25 PM

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*Regional Observations*




USA Extremes: Sunday, May 17, 2026
(Lower 48)

High Temperature
102°F at Canadian, TX
102°F at Castroville Muni Tx, TX

Low Temperature
14°F at Stanley Ranger Station, ID

High Precipatation
2.53in at Miami Opa Locka Ap, FL

Data courtesy of NWS-CPC



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Atmospheric CO2
Tonight

Tonight: Mostly Clear
Mostly Clear
Tuesday

Tuesday: Mostly Sunny
Mostly Sunny
Tuesday
Night
Tuesday Night: Slight Chance Showers And Thunderstorms then Partly Cloudy
Slight Chance Showers And T-Storms then Partly Cloudy
Wednesday

Wednesday: Mostly Sunny then Chance Showers And Thunderstorms
Mostly Sunny then Chance Showers And T-Storms
Wednesday
Night
Wednesday Night: Chance Rain Showers then Partly Cloudy
Chance Rain Showers then Partly Cloudy
Lo 64 °F Hi 95 °F Lo 72 °F Hi 90 °F Lo 52 °F





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Lowell Almanac Information
Station Elevation: 178 ft  Latitude: 42° 37' 33" N  Longitude: 71° 20' 12" W

Today's Almanac
Sun
Start civil twilight: 04:47:29 AM
Sunrise: 05:19:48 AM
Transit: 12:41:46 PM
Sunset: 08:04:20 PM
End civil twilight: 08:36:47 PM
Azimuth: 346.4°
Altitude: -26.5°
Right ascension: 56.0°
Declination: 19.8°
Solstice: 06/21/2026 04:24:30 AM
Equinox: 09/22/2026 08:05:13 PM
Moon
Rise: 06:21:07 AM
Transit: 02:39:18 PM
Set: 10:57:40 PM
Azimuth: 318.3°
Altitude: -7.5°
Right ascension: 90.8°
Declination: 27.1°
Full moon: 05/31/2026 04:45:12 AM
New moon: 06/14/2026 10:54:10 PM
Phase: Waxing crescent
(8% full)


Today's Total Daylight:  14 hours, 44 minutes, 31 seconds
1 minute, 57 seconds More than Yesterday

Lowell's Daily Climatology



Detailed Historical Data