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 Details for Anne Arundel Co. Air Quality Alert
 Carroll Co.
 Details for Carroll Co. Air Quality Alert  +1 additional alert
 Harford Co.
 Details for Harford Co. Air Quality Alert
 Howard Co.
 Details for Howard Co. Air Quality Alert
 Montgomery Co.
 Details for Montgomery Co. Air Quality Alert  +1 additional alert
 Northern Baltimore Co.
 Details for Northern Baltimore Co. Air Quality Alert
 Southern Baltimore Co. & City
 Details for Southern Baltimore Co. & City Air Quality Alert
 Frederick Co.
 Details for Frederick Co. Air Quality Alert
 Prince Georges Co.
 Details for Prince Georges Co. Air Quality Alert

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Air Quality Alert AIR QUALITY ALERT - Anne Arundel Co.  - Carroll Co.  - Frederick Co.  - Harford Co.  - Howard Co.  - Montgomery Co.  - Northern Baltimore Co.  - Prince Georges Co.  - Southern Baltimore Co. & City    

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Radar Legend
Bless America
Afternoon OBSERVATIONS: Its afternoon,sunny/dry and it feels dangerously hot outside. The temperature has been rising for the last few hours. There is a light breeze from the west south west. Visibility is about 10 mile(s). The sun is shining brightly. The barometer has been steady over the last hour. So far no measurable precipition has been observed today.
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METRIC | IMPERIAL
Updated: 27-Jul-2021 @ 1:22pm  
Temperature Current Conditions Forecast / Storm Prediction
Currently Outside: Warmer 0.7°F than last hour.

95.8°F

Heat Index:  98.9°F
Feels like:  99°F
Dangerously Hot
High Today
96.3°F
12:38 		Low Today
69.9°F
06:17
Yest High
96.2°F
15:56 		Yest Low
73.8°F
06:19
Station High
100.9°F
2005* 		Station Low
65.1°F
2010*
BWI High
101°F
1940 		BWI Low
52°F
1962
* This Station's Records Since 8/2004
Sunny, Dry Sunny, Dry

Wind from N Wind:  N
3.9
Gusting to:
 4.6 mph
Current Rain Rain:
0.00 in
Fire Weather Index: MODERATE Current FWI:4
Fire Danger:
36.1 of 232
This
Afternoon
This Afternoon: Mostly sunny, with a high near 95. Northwest wind around 6 mph becoming south.
Mostly Sunny

 Tonight

Tonight: Mostly clear, with a low around 73. Light and variable wind.
Mostly Clear

 Wednesday

Wednesday: A chance of showers and thunderstorms, mainly after 3pm. Sunny, with a high near 93. Northeast wind 3 to 7 mph. Chance of precipitation is 30%.
Sunny then
Chance
T-storms
Hi 95 °F Lo 73 °F Hi 93 °F
SPC Activity Map
Dew Point Liquid Precipitation Wind Speed Sun/Moon
Current: Increased 2.2°F since last hour. 65.4°F
Last Hour: Increased 2.2°F since last hour. 2.2°F
High 08:18: 71.7°F
Low 11:46: 62.7°F
Record High: 87.6°F on
16-Aug-2017
Record Low: -34.2°F on
17-Nov-2005
Wetbulb: 75.6°F
Today: 0.00 in
Yesterday: 0.00 in
Last 7 Days: 0.11 in
Jul Rain: 1.73 in
Jul to Date
  Avg:10 		0.00 in
Jul to Date
  Diff from Avg:10 		Over 1.73 in for the month 1.73 in
Jul Avg: 5.18 in
Diff from Avg: Under 3.45 in for the month 3.45 in
Season:1 19.84 in
YTD
  Avg:11 		19.33 in
YTD
  Diff from Avg:11 		Over 0.51 in for the year 0.51 in
Last Rain
Time/Date: 		21-Jul-2021
at 20:35
73 rain days in 2021
9 days in July
5 days since last rain
Current: N  3.9 mph
1Hr Average: 4.7 mph
Wind Run: 18.06 miles
Wind Gust
Current: 4.6 mph
Today: 17.3 mph 12:45
Month: 40.3 mph 7-Jul
Year: 64.4 mph 26-Apr
Record Gust: 92.0 mph
19-Sep-2003
Sunlight:
14 hrs 20 min
37 sec
of Sunlight Today Which is
1 min 45 sec shorter than
yesterday
 (Noon) graph (Midnight)

Waning Gibbous
Waning Gibbous, 17 days, 16 hours, 7 minutes in cycle
86%
Illuminated
Humidity Barometer
Current: Increased 2% since last hour. 37%
Last Hour: Increased 2% since last hour. 2%
High 06:56: 93%
Low 12:15: 35%
Record High: 100%
29-Sep-2005
Record Low: 11%
29-Nov-2014
Current: Falling 0.3 inHg/hr 1013.3 inHg
Last Hour: Steady
High 07:33: 1014.2
Low 03:27: 1012.0
Record High: 1045.5 inHg
28-Feb-2015
Record Low: 963.4 inHg
29-Oct-2012
Cooling Degree Days Lightning Strikes Heat Index Air
Today: 5.0
Jul: 380.0
2021 to Date: 826.4
Heating Degree Days
2021 to Date: 2616.2
Last Min: 0
Last 5 Mins: 0
Last 30 Mins: 0
Last 60 Mins: 0
Last 12 Hrs: 10
Jul: 15582
2021 to Date: 31156
Last
Strike:		 10:28:35
07--2021
Current: 98.9°F
High 12:38pm: 100.3°F
Yesterday: 104.1°F
Record: 138.9°F
3-Nov-2019
Metropolitan Baltimore, MD
Quality Index:16
63
Moderate
Last Updated:
Tue, 27 Jul 2021 11:45:02 EST
Davis AirLink Sensor13
AQI: 88.5
Particulate Matter Concentration µg/m3
PM1.0: 21.3   PM2.5: 29.9   PM10: 32.6
Current UV Index Current Solar Energy9
6.4
Sunburn in
18 Minutes 		Highest:
07:26
6.5
981 W/m2
99%
W/m2 ⇒ SI 		High Today:
12:39
 1032  W/m2
Record:
1517 W/m2
Almanac Irrigation Index5 Station All Time Records Cloud Level
Currently: Afternoon
YTD Avg Temp: 56.3°F
Sunrise: 06:02
Sunset: 20:24
Moonrise: 22:34
Moonset: 09:42
Full Moon: 24-Jul-2021
New Moon: 13:51 UTC
8-Aug-2021
Updated at Midnight
Current ET: 0.25 in
7-Days Rain: 0.11 in
7-Days ET: 1.74 in
7-Day: 1.634 in water in deficit of what evaporated in last 7 days. 1.634 in
July: 4.26 in water in deficit of what evaporated this month. 4.26 in
HIGHS: LOWS:
138.9°F
3-Nov-2019 		-0.0°F
1-Mar-2011
Daytime Records
  102.9°F
07-Jul-2012 		  0.5°F
23-Nov-2019
Nitetime Records
  90.3°F
08-Jul-2012 		  -0.0°F
01-Mar-2018
ICN:0 | S3C2:4 | Ajax 3.xx
ISS:Ok | CON:4.7 | RCP:100%
METRIC | IMPERIAL
Updated: 27-Jul-2021 @ 1:22pm  
1 Rain season: Jan 1st to Dec 31st.   2 Snow season July 1st to June 30th.   3 Snow manually measured and updated as required.   4 Updated at Noon Eastern Standard Time.   5 Estimated amount of water needed to replace the water used by plants and evaporation from the past week. (Negative numbers mean amount of water needed, positive numbers mean excess water is present).   6 Air Quality Index is provided by AirNow and is updated hourly between the hours of 6AM and Midnight.   9 Solar Index represents either an absolute scale of solar energy (W/m²) using the station’s recorded maximum or a percentage of computed theoretical solar maximum using the station’s location and time of day. These indices differ most when the sun is low on the horizon. The current scale is shown, and will toggle if it or the icon is clicked.   10 Historical average only to day 27 of just the month of July for this station since 2005.   11 Historical average rain this season to day 27 of July for this station since 2005.   12 NWS Zone Forecast (MDZ011).   13 Data from Davis AirLink AQ Sensor located at Halethorpe Weather-Watch.  
 NWS Weather Forecast  -   Outlook This Afternoon & Tonight
This
Afternoon
This Afternoon: Mostly sunny, with a high near 95. Northwest wind around 6 mph becoming south.
Mostly Sunny


Hi 95 °F 		NWS forecast: Mostly sunny, with a high near 95. Northwest wind around 6 mph becoming south.
Local station forecast:12  Sunny. Highs in the lower 90s. Northeast winds around 5 mph. 		Tonight

Tonight: Mostly clear, with a low around 73. Light and variable wind.
Mostly Clear


Lo 73 °F 		NWS forecast: Mostly clear, with a low around 73. Light and variable wind.
 NWS Short Term Weather Forecast
Wednesday

Wednesday: A chance of showers and thunderstorms, mainly after 3pm. Sunny, with a high near 93. Northeast wind 3 to 7 mph. Chance of precipitation is 30%.
Sunny then
Chance
T-storms
 Wednesday
Night
Wednesday Night: A chance of showers and thunderstorms, mainly before 9pm. Partly cloudy, with a low around 70. Northeast wind around 6 mph becoming calm in the evening. Chance of precipitation is 30%.
Chance
T-storms then
Partly Cloudy
 Thursday

Thursday: A chance of showers and thunderstorms after 2pm. Mostly cloudy, with a high near 87. East wind 5 to 8 mph becoming southwest in the afternoon. Chance of precipitation is 40%.
Mostly Cloudy
then Chance
T-storms
 Thursday
Night
Thursday Night: A chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 70. Chance of precipitation is 40%.
Chance
T-storms
 Friday

Friday: Mostly sunny, with a high near 89.
Mostly Sunny

 Friday
Night
Friday Night: Mostly clear, with a low around 63.
Mostly Clear

 Saturday

Saturday: Sunny, with a high near 85.
Sunny
Hi 93 °F Lo 70 °F Hi 87 °F Lo 70 °F Hi 89 °F Lo 63 °F Hi 85 °F
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