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2026-05-21 13:09 PM CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu Continuation of Serial Number: 3690 Begin Time: 2026-05-16 17:40 Yesterday Maximum 2MeV Flux: 1717 pfu Continued 2026-05-21 05:07 by Forecaster User TROPICAL CYCLONE ADVISORY: ABPW10 PGTW 210600 MSGID/GENADMIN/JOINT TYPHOON WRNCEN PEARL HARBOR HI// SUBJ/SIGNIFICANT TROPICAL WEATHER ADVISORY FOR THE WESTERN AND SOUTH PACIFIC OCEANS/210600Z-220600ZMAY2026// RMKS/ 1. WESTERN NORTH PACIFIC AREA (180 TO MALAY PENINSULA): A. TROPICAL CYCLONE SUMMARY: NONE. B. TROPICAL DISTURBANCE SUMMARY: NONE. C. SUBTROPICAL SYSTEM SUMMARY: NONE. 2. SOUTH PACIFIC AREA (WEST COAST OF SOUTH AMERICA TO 135 EAST): A. TROPICAL CYCLONE SUMMARY: NONE. B. TROPICAL DISTURBANCE SUMMARY: NONE. C. SUBTROPICAL SYSTEM SUMMARY: NONE.// NNNN
THUNDERSTORM (c/o PAGASA)

Thunderstorm Watch #NCR_PRSD
Issued at: 10:00 PM, 21 May 2026

Thunderstorm is MORE LIKELY to develop over Greater Metro Manila Area(Metro Manila, Bulacan, Rizal, Laguna and Cavite) within 12 hours.

Published by: NCRPRSDValid until: May 22, 2026 10:00 AM
Affected Areas: Metro Manila, Bulacan, Cavite, Laguna, Rizal
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METRIC | IMPERIAL
Updated: 05/21/2026 @ 9:00pm  
Temperature Current Conditions Forecast / Storm Prediction
Outside Temperature: Colder 0.2°C than last hour.

31.5°C

Heat Index:  42.2°C
Feels like:  42°C
Warm
Indoor Temperature

98.8°C

Max Humidex:  46.7°C
Indoor Humidity: %
High Today
35.8°C
2:53 PM 		Low Today
27.2°C
5:19 AM
Yest High
35.4°C
1:27 PM 		Yest Low
26.2°C
1:36 AM
Sta* High
37.0°C
4/28/2026
 Sta* Low
21.4°C
1/24/2026
Space Weather Status
X-Ray: C2.6 Max: C5.5
NORMAL
Geomagnetic Field: 1.33
QUIET
Few Clouds Few Clouds ,
Few Clouds

Wind from NE Wind:  NE
1.4
Gusting to:
 4.0 km/h
Current Rain Rain Total:
0.0 mm
Rain Warning Rain Rate:
Chandler Burning Index: LOW Current CBI
Fire Danger:
2.0 % of 100%
LA NINA / EL NINO
EL Nino and La Nina Scripted by PIMOHWEATHER Philippines
Thursday
Rain, Partially cloudy rain
Rain, Partially cloudy with 36°C
29°C 		Friday
Rain, Partially cloudy rain
Rain, Partially cloudy with 35°C
27°C 		Saturday
Partially cloudy rain
Partially cloudy with 36°C
27°C
Official Record High
98W INVEST LPA 37 kph OUTSIDE PAR
VOLCANO THERMAL ALERT STATUS
TAAL
Volcano Alert Status
 MAYON
Volcano Alert Status
 PINATUBO
Volcano Alert Status
Dew Point Liquid Precipitation Wind Speed Sun/Moon
Current: Decreased 0.4°C since last hour. 27.4°C
Last Hour: Decreased 0.4°C since last hour. 0.4°C
High 2:55 PM: 29.5°C
Low 1:45 AM: 24.9°C
Record High: 30.0°C on
May-13-2026
Record Low: 16.2°C on
Mar-14-2026
Wetbulb: 28.5°C


Today: 0.00 mm
Yesterday: 16.20 mm
Last 7 Days: 30.00 mm
May Rain: 52.80 mm
May to Date
  Avg:10 		0.00 mm
May to Date
  Diff from Avg:10 		Over 52.8 mm for the month 52.80 mm
May Avg: 200.30 mm
Diff from Avg: Under 147.5 mm for the month 147.50 mm
Season:1 115.8 mm
YTD
  Avg:11 		199.40 mm
YTD
  Diff from Avg:11 		Under 83.6 mm for the year 83.60 mm
Last Rain
Time/Date: 		May-20-2026
at 2:29 PM
27 rain days in 2026
6 days in May
0 days since last rain
Current: NE  1.4 km/h
Highest Speed: 14.8 km/h
1Hr Average: 2.3 km/h
Wind Run: 90.50 km
Wind Gust
Current: 4.0 km/h
Today: 40.7 km/h 11:08 AM
Month: 100.8 km/h May-13
Year: 100.8 km/h May-13
Record Gust: 100.8 km/h
May-13-2026
Sunlight:
12 hrs 51 min 35 sec
of Sunlight Today
Which is 29 sec Longer
Than Yesterday


(Noon)
graph (Midnight)

 Highslide JS
Evening Crescent, 4 days, 17 hours, 26 minutes in cycle
28%
Illuminated
Outside Humidity Barometer
Current: Decreased 1% since last hour. 79%
Last Hour: Decreased 1% since last hour. 1%
High 5:08 AM: 88%
Low 4:57 PM: 67%
Record High: 99%
Dec-10-2025
Record Low: 42%
Apr-7-2026
Current: Rising 0.7 hPa/hr 1007.9 hPa
Last Hour: Rising slowly
High 9:05 AM: 1010.3
Low 4:33 PM: 1005.3
Record High: 1017.0 hPa
Jan-24-2026
Record Low: 1001.5 hPa
May-12-2026
Cooling Degree Days Tide Heat Index Air Quality
Today: 9.7
May: 259.7
2026 to Date: 1097.2
Heating Degree Days
2026 to Date: 0.0

22 minutes to low tide at
09:49 PM PST
Current: 42.2°C
High 2:55pm: 53.4°C
Yesterday: 53.1°C
Record: 53.4°C
May-21-2026

25

Good

PM2.5: 5.95 ug/m3 PM10: 11.27 ug/m3

Last Updated: 2026-05-21 21:27:21 PHT
UV Summary/Forecast Solar Summary
High Today:   13.0 @ 9:23 AM
May-22

12.0 		May-23

12.0 		May-24

12.5
High Today:  
869 W/m2 @ 9:24 AM
Sun Hours Today:
01:31
   This Month: 39:26 Hrs
Rise: 5:26 am  Set: 6:18 pm
Almanac Irrigation Index5 Station All Time Records Cloud Level
Currently: Evening
YTD Avg Temp: 27.6°C
Sunrise: 5:26 am
Sunset: 6:18 pm
Moonrise: 9:49 am
Moonset: 11:03 pm
Full Moon: 08:46 UTC May 31 2026
Next Eclipse:
Image
12 Aug 2026 (84 days away): Total solar eclipse Thu, 13 Aug 2026 01:47:00 AM PST
Updated at Midnight
Current ET: 2.00 mm
7-Days Rain: 30.00 mm
7-Days ET: 13.80 mm
7-Day: 16.2 mm water in excess of what evaporated in last 7 days. 16.2 mm
May: 102.8 mm water in deficit of what evaporated this month. 102.8 mm
Solar HF Condition
HIGHS: LOWS:
37.0°C
Apr-28-2026 		21.4°C
Jan-24-2026
Daytime Records
  33.6°C
May-09-2026 		  23.4°C
Dec-20-2025
Nitetime Records
  31.6°C
Apr-05-2026 		  23.4°C
Jan-02-2026
ICN:4 | S3C2:5 | Ajax 3.xx
ISS:Ok | CON:%vpconsolebattery% | RCP:%vpreception2%
METRIC | IMPERIAL
Updated: 05/21/2026 @ 9:00pm  
1 Rain season in the Philippines: June 1st to Oct 31st.   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 Luftdaten System esp8266 and is updated every 5 mins..   10 Historical average only to day 21 of just the month of May for this station since 2016.   11 Historical average rain this season to day 21 of May for this station since 2016.
 VC Weather Forecast  -   with local Weather Outlook for Thursday & Friday
Thursday
Rain, Partially cloudy rain
Rain, Partially cloudy
36°C
29°C 		VC forecast: Clearing in the afternoon with storms possible. Chance of precipitation (rain) 48%. High: 36°C. Low: 29°C. Wind ESE 16->18 km/h. UV Index 6.
Local Weather Advisory:

At 3:00 PM today, the Low Pressure Area (LPA) was estimated based on all available data at 925 km East of Southeastern Mindanao (6.6°N, 134.0°E). Easterlies affecting Luzon and Visayas.
 Friday
Rain, Partially cloudy rain
Rain, Partially cloudy
35°C
27°C 		VC forecast: Partly cloudy throughout the day with storms possible. Chance of precipitation (rain) 48%. High: 35°C. Low: 27°C. Wind SSW 19->24 km/h. UV Index 9.
 VC Short Term Weather Forecast
Saturday
Partially cloudy rain
Partially cloudy 		Sunday
Overcast rain
Overcast 		Monday
Partially cloudy rain
Partially cloudy 		Tuesday
Rain, Partially cloudy rain
Rain, Partially cloudy 		Wednesday
Rain, Partially cloudy rain
Rain, Partially cloudy 		Thursday
Rain, Partially cloudy rain
Rain, Partially cloudy 		Friday
Rain, Partially cloudy rain
Rain, Partially cloudy
36°C
27°C 		35°C
27°C 		36°C
27°C 		34°C
27°C 		34°C
27°C 		34°C
27°C 		33°C
27°C
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