Environmental watch
What's in the air, water, and ground around here.
Live environmental OSINT for your community, pulled from public federal feeds — the EPA, the USGS, and the National Weather Service. No account, no tracking; every number links back to its public source. Auto-refreshes about every 30 minutes.
🌎 Environmental watch
Live public data for San Marcos · updated 18 hr ago · showing last good readingAir quality
80ModerateUS AQI
PM2.5 11μg/m³PM10 14μg/m³Ozone 97μg/m³NO₂ 3μg/m³
Water monitoring
San Luis Rey R A Oceanside Ca · 19.9 km away
0.00 ft3/sStreamflow
5.45 ftGage height
Active alerts
✓ No active weather alerts
Earthquakes · 30 days
M3.6strongest within 250 km
14 km N of Warner Springs, CA
16 quakes ≥ M2.5
Sources: Open-Meteo Air Quality, USGS Water Services, National Weather Service, USGS Earthquake Catalog, EPA National Priorities List. All public, no personal data.
Air quality — full readout
US Air Quality Index 80 (Moderate). Observed Aug 31, 6:00 PM.
10.6 μg/m³PM2.5
13.5 μg/m³PM10
97.0 μg/m³Ozone
2.7 μg/m³NO₂
0.9 μg/m³SO₂
110.0 μg/m³CO
Source: Open-Meteo Air Quality ↗
Water monitoring — nearest site
San Luis Rey R A Oceanside Ca · 19.9 km away · 39 sites in range
0.00 ft3/sStreamflow · Sep 1, 12:30 AM
5.45 ftGage height · Sep 1, 12:30 AM
Source: USGS Water Services ↗
Active weather alerts0
✓ No active National Weather Service alerts for this area.
Source: National Weather Service ↗
Earthquakes — last 30 days16
M2.9↗M2.6↗M2.6↗M3.1↗M2.7↗
22 km SSW of La Quinta, CA
Aug 31, 11:04 AM · 81 km away
2 km NW of Delta, B.C., MX
Aug 31, 2:16 AM · 202 km away
52 km SSW of Progreso, B.C., MX
Aug 27, 3:36 AM · 171 km away
12 km WSW of Salton City, CA
Aug 25, 8:17 PM · 103 km away
8 km WSW of Alberto Oviedo Mota, B.C., MX
Aug 20, 1:32 PM · 207 km away
Source: USGS Earthquake Catalog ↗
Superfund sites
99 active EPA Superfund (National Priorities List) sites in CA of 116 ever listed.
Camp Pendleton Marine Corps Base
San Diego County · NPL Site · 24 km away
The state’s energy ledger
What CA’s grid runs on, its EV fleet and charging network, and where its mandate stands — from the national Energy Ledger.
Open the CA energy dossier →Snapshot generated Sep 1, 1:49 AM (showing last good reading while refreshing). All data is public and carries no personal information.