Woburn Weather Center  85.1°F

07/16/2026 04:35:00 PM

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Air Quality Alert

AIR QUALITY ALERT IN EFFECT UNTIL MIDNIGHT EDT TONIGHT

Air Quality Alert issued July 16 at 6:18AM EDT by NWS Boston/Norton MA

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

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 17 at 12:00 AM EDT
Current Conditions ♦
Air Quality 77 MODERATE
PM 2.5 23 µg/m³
Outside Temperature 85.1°F
WBGT (EST.)
75.6°F
Low Risk
Heat Index 84.8°F
Apparent Temperature 87.3°F
Humidex 92.5°F
Dew Point 59.5°F
Outside Humidity 42%
Barometer
29.675 inHg (-0.038)
Falling Slowly
Wind 2 mph NE (47°)
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
8 days, 17 hours, 45 minutes ago
UV Index 1.9
ET Today 0.16 in
Radiation 249 W/m²
Statistics ♦
 
Today		  
Week		  
Month		         
Year 		Rain
Year
Outside Temperature 86.5
58.3 		87.4
58.1 		96.3
58.1 		96.3
-6.9 		96.3
-6.9 		°F
WBGT 85.9
57.1 		86.5
57.1 		92.1
57.1 		92.8
-7.1 		92.8
-7.1 		°F
Air Quality Index 83
56 		157
26 		157
14 		172
0 		172
0 		AQI
PM 2.5 27
12 		64
5 		64
3 		86
0 		86
0 		µg/m³
PM 1.0 27
13 		52
2 		52
0 		104
0 		104
0 		µg/m³
PM 10.0 48
17 		83
3 		83
0 		105
0 		105
0 		µg/m³
Heat Index 88.2
58.0 		94.9
58.0 		106.5
58.0 		106.5
-6.9 		106.5
-6.9 		°F
Wind Chill 86.5
58.3 		87.4
58.1 		96.3
58.1 		96.3
-6.9 		96.3
-6.9 		°F
Dew Point 67.6
55.4 		73.9
50.2 		76.4
50.2 		76.6
-16.3 		76.6
-16.3 		°F
Outside Humidity 92
38 		99
37 		99
33 		99
16 		99
16 		%
Barometer 29.837
29.669 		30.183
29.660 		30.183
29.660 		30.701
29.263 		30.701
29.263 		inHg
Max Wind 18
246 		19
182 		19
182 		36
206 		36
206 		mph
°
Average Wind 1 1 1 1 1 mph
RMS Wind 1 2 2 2 2 mph
Vector Average
Vector Direction 		0
311 		1
191 		0
145 		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 0.16 0.70 2.46 15.41 15.41 in
UV Index 8.0 9.0 9.6 10.0 10.0
Radiation 902
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 85.1
65.3 		87.3
64.9 		94.8
64.9 		94.8
58.9 		94.8
58.9 		°F
Inside Humidity 74
44 		78
42 		82
42 		85
16 		85
16 		%
Climatological Data ♦
TODAY
Normal High Temp 85.6°F
Record High Temp 93.0°F in 2025
Normal Low Temp 64.2°F
Record Low Temp 55.2°F in 2020
Normal Avg Temp 74.8°F
YESTERDAY
Normal High Temp 85.0°F
Record High Temp 93.4°F in 2016
Normal Low Temp 65.1°F
Record Low Temp 53.2°F in 2009
Normal Avg Temp 74.7°F
Avg Temp 76.5°F
Departure From Normal 1.82F
SEASONAL TEMPERATURES
Last Temp Of 32°F 04/25/2026 06:55:00 AM
82 days, 9 hours, 40 minutes ago
Last Temp Of 90°F 07/09/2026 03:55:00 PM
7 days, 0 hours, 40 minutes ago
Climatological Period 2006 To 2025
Celestial ♦
☀☽
Rise 5:21 AM   Rise 7:54 AM
Set 8:19 PM   Set 9:57 PM
Daylight 14:57   Waxing crescent
8%
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 4 days, 11 hours, 12 minutes
WeeWX Uptime 0 days, 5 hours, 41 minutes
GW2000 Gateway Uptime 20 days, 3 hours, 3 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
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This station is controlled by WeeWX, an experimental weather software system written in Python.