Woburn Weather Center  68.2°F

07/18/2026 07:40:00 AM

Monthly Reports:
Yearly Reports:
Air Quality Alert

AIR QUALITY ALERT IN EFFECT FROM MIDNIGHT TONIGHT TO MIDNIGHT EDT SATURDAY NIGHT

Air Quality Alert issued July 17 at 6:08PM EDT by NWS Boston/Norton MA

The Massachusetts Department of Environmental Protection has issued an Air Quality Alert for Fine Particulates, from midnight tonight to midnight EDT Saturday night.

An Air Quality Alert day means that Fine Particulates concentrations within the region may approach or exceed levels that are Unhealthy for Sensitive Groups.

Air is unhealthy for sensitive children and adults, such as those with asthma, lung or heart disease, and older adults. Sensitive children and adults should limit prolonged outdoor activity.

For additional information, please visit the Massachusetts Department of Environmental Protection website at: https://mass.gov/dep/massair/forecast

Expires: July 19 at 12:00 AM EDT
Current Conditions ♦
Air Quality 71 MODERATE
PM 2.5 20 µg/m³
Outside Temperature 68.2°F
WBGT (EST.)
66.5°F
Low Risk
Apparent Temperature 70.8°F
Humidex 75.8°F
Dew Point 59.7°F
Outside Humidity 74%
Barometer
29.945 inHg (-0.023)
Falling Slowly
Wind 1 mph SSW (208°)
Rain Rate 0.00 in/h
Rain Today 0.00 in
Rain Yesterday 0.00 in
Storm Rain 0.00 in
Last Rain
07/07/2026 10:50:00 PM
10 days, 8 hours, 50 minutes ago
UV Index 1.0
Radiation 190 W/m²
Statistics ♦
 
Today		  
Week		  
Month		         
Year 		Rain
Year
Outside Temperature 68.5
58.6 		87.4
56.8 		96.3
56.8 		96.3
-6.9 		96.3
-6.9 		°F
WBGT 67.0
56.5 		86.5
56.4 		92.1
56.4 		92.8
-7.1 		92.8
-7.1 		°F
Air Quality Index 75
24 		157
24 		157
14 		172
0 		172
0 		AQI
PM 2.5 22
4 		64
4 		64
3 		86
0 		86
0 		µg/m³
PM 1.0 23
4 		52
2 		52
0 		104
0 		104
0 		µg/m³
PM 10.0 41
5 		83
2 		83
0 		105
0 		105
0 		µg/m³
Heat Index 68.6
58.1 		94.9
56.7 		106.5
56.7 		106.5
-6.9 		106.5
-6.9 		°F
Wind Chill 68.5
58.6 		87.4
56.8 		96.3
56.8 		96.3
-6.9 		96.3
-6.9 		°F
Dew Point 60.0
52.4 		73.9
45.5 		76.4
45.5 		76.6
-16.3 		76.6
-16.3 		°F
Outside Humidity 86
71 		99
28 		99
28 		99
16 		99
16 		%
Barometer 30.000
29.932 		30.183
29.660 		30.183
29.660 		30.701
29.263 		30.701
29.263 		inHg
Max Wind 4
198 		19
182 		19
182 		36
206 		36
206 		mph
°
Average Wind 0 1 1 1 1 mph
RMS Wind 1 2 2 2 2 mph
Vector Average
Vector Direction 		0
194 		0
195 		0
142 		0
6 		0
6 		mph
°
Rain 0.00 0.00 2.64 13.24 13.24 in
Rain Rate 0.00 0.00 1.52 1.56 1.56 in/h
Evapotranspiration 0.00 0.90 2.65 15.61 15.61 in
UV Index 1.0 9.0 9.6 10.0 10.0
Radiation 197
0 		1033
0 		1074
0 		1101
0 		1101
0 		W/m²
Lightning Strikes 0 0 2 442 442
Lightning Distance 0.6
0.6 		0.6
0.6 		10.6
0.6 		24.9
0.6 		24.9
0.6 		miles
Inside Temperature 69.8
66.0 		87.3
64.4 		94.8
64.4 		94.8
58.9 		94.8
58.9 		°F
Inside Humidity 72
56 		78
34 		82
34 		85
16 		85
16 		%
Climatological Data ♦
TODAY
Normal High Temp 82.7°F
Record High Temp 93.6°F in 2006
Normal Low Temp 65.9°F
Record Low Temp 56.6°F in 2014
Normal Avg Temp 74.4°F
YESTERDAY
Normal High Temp 86.6°F
Record High Temp 94.0°F in 2012
Normal Low Temp 65.7°F
Record Low Temp 52.6°F in 2015
Normal Avg Temp 75.5°F
Avg Temp 69.5°F
Departure From Normal -6.05F
SEASONAL TEMPERATURES
Last Temp Of 32°F 04/25/2026 06:55:00 AM
84 days, 0 hours, 45 minutes ago
Last Temp Of 90°F 07/09/2026 03:55:00 PM
8 days, 15 hours, 45 minutes ago
Climatological Period 2006 To 2025
Celestial ♦
☀☽
Rise 5:23 AM   Rise 10:21 AM
Set 8:18 PM   Set 10:41 PM
Daylight 14:54   Waxing crescent
21%
Sensor Status ♦
Battery Status
Outside T/H OK
Rain Gauge OK
Anemometer OK
Lightning Detector OK
Basement Leak Detector OK
Attic T/H OK
Freezer T/H OK
Garage T/H OK
Dining Room T/H OK
Refrigerator T/H OK
Basement T/H OK
Master Bedroom T/H OK
About Weather Station ♦
Latitude 42° 27.48' N
Longitude 071° 11.73' W
Altitude 161 feet
Hardware ECOWITT
Temp WH32EP
Rain WH40H
Anemometer WS68
Lightning WH57
PurpleAir
PA-II-Flex1,2
Server Uptime 0 days, 1 hour, 3 minutes
WeeWX Uptime 0 days, 1 hour, 3 minutes
GW2000 Gateway Uptime 21 days, 18 hours, 8 minutes
GW2000 Gateway Memory 129 KB
WeeWX version 5.4.0
Skin Seasons 5.4.0
1 EPA Correction Applied
2 EPA Final AQI Update
Wx Networks Uploaded To ♦
CWOP N1OTX
Mesowest AP564
PurpleAir Pauland.net
PWSWeather KMAWOBUR2 WX
WOW Woburn Weather Center
Weather Underground KMAWOBUR2
History:   Day Week Month Year
daybarometer daytempdew dayaqi daytempfeel dayhum daywind daywindrose dayrain dayuv dayradiation daytempin

This station is controlled by WeeWX, an experimental weather software system written in Python.