Air Quality Alert AIR QUALITY ALERT - Middlesex County

Observed at
Lowell, Massachusetts
07-18-2026 03:30 PM

Temperature

71.7°F

Hour Change

-3.9°F

Wet Bulb Temp

69.3°F

Humidity

89%

Hour Change

9%

Dewpoint

68.3°F

Hour Change

-0.7°F

Wind

4 mph from 158° (SSE)

Wind Gust

11 mph

Barometer

29.76 inHg

3 Hour Trend

-0.08 inHg

Today's Rain

0.08 in

Current Rain Rate

0.14 in/hr

Last Hour of Rain

0.08 in

Apparent Temp

76.2°F

Wind Chill

71.7°F

Heat Index

72.8°F

Est. Cumulus Base

956 feet

Today's Highs / Lows

Temperature
Climate Normals

High: 85.1℉ ; Low: 61.3℉

High Temperature

Low Temperature

82.5°F at 12:04 PM

61.9°F at 04:20 AM

High Humidity

Low Humidity

89% at 03:23 PM

61% at 12:11 PM

High Dewpoint

Low Dewpoint

69.3°F at 02:31 PM

53.6°F at 12:47 AM

High Barometer

Low Barometer

30.00 inHg at 12:32 AM

29.76 inHg at 03:29 PM

High Wind Gust

15 mph from 165° at 11:28 AM

High Rain Rate

0.65 in/hr at 03:07 PM

Low Wind Chill

61.9°F at 04:20 AM

High Heat Index

85.8°F at 12:04 PM

Yesterday's Statistics

High Temperature

Low Temperature

84.8°F at 02:41 PM

59.2°F at 05:37 AM

High Humidity

Low Humidity

88% at 04:37 AM

28% at 05:55 PM

High Dewpoint

Low Dewpoint

59.1°F at 12:10 AM

44.1°F at 06:02 PM

High Barometer

Low Barometer

30.00 inHg at 11:22 PM

29.87 inHg at 12:00 AM

High Wind Gust

12 mph from 340° at 09:20 AM

Rain

0.00 in

High Rain Rate

0.00 in/hr at 12:00 AM

Low Wind Chill

59.2°F at 05:37 AM

High Heat Index

83.2°F at 02:41 PM

Website Powered By WeeWX Software:  WeeWX.COM
Weewx uptime: 11 days, 7 hours, 41 minutes
Server uptime: 11 days, 7 hours, 41 minutes
weewx v5.3.1


*Regional Observations*




USA Extremes: Friday, July 17, 2026
(Lower 48)

High Temperature
107°F at Palm Springs Asos, CA

Low Temperature
36°F at Mount Washington, NH

High Precipatation
4.06in at St Petersburg Albert Whitted Ap, FL

Data courtesy of NWS-CPC



Lowell Webcams

Courtesy McDonough Funeral Home


New England Webcams


Atmospheric CO2
This
Afternoon
This Afternoon: Smoke
Smoke
Tonight

Tonight: Smoke then Slight Chance Showers And Thunderstorms
Smoke then Slight Chance Showers And T-Storms
Sunday

Sunday: Sunny
Sunny
Sunday
Night
Sunday Night: Clear
Clear
Monday

Monday: Sunny
Sunny
Hi 85 °F Lo 65 °F Hi 81 °F Lo 57 °F Hi 84 °F


CURRENT SURFACE MAPS

GeoColor - True Color daytime, multispectral IR at night

Click Above Images to Enlarge



24 Hour Plots - Mouseover for Weekly Plots



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

Today's Almanac
Sun
Start astro twilight: 03:17:53 AM
Start civil twilight: 04:50:13 AM
Sunrise: 05:23:28 AM
Transit: 12:51:38 PM
Sunset: 08:19:17 PM
End civil twilight: 08:52:25 PM
End astro twilight: 10:24:13 PM
Azimuth: 249.3°
Altitude: 50.5°
Right ascension: 118.2°
Declination: 20.9°
Equinox: 09/22/2026 08:05:13 PM
Solstice: 12/21/2026 03:50:14 PM
Moon
Rise: 10:22:17 AM
Transit: 04:38:21 PM
Set: 10:42:06 PM
Azimuth: 156.2°
Altitude: 44.3°
Right ascension: 174.6°
Declination: -0.6°
Full moon: 07/29/2026 10:35:43 AM
New moon: 08/12/2026 01:36:44 PM
Phase: Waxing crescent
(24% full)


Today's Total Daylight:  14 hours, 55 minutes, 49 seconds
1 minute, 37 seconds Less than Yesterday

Lowell's Daily Climatology



Detailed Historical Data