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 11 hr ago · showing last good readingAir quality
51ModerateUS AQI
PM2.5 10μg/m³PM10 16μg/m³Ozone 57μg/m³NO₂ 2μg/m³
Water monitoring
No live streamgage nearby.
Active alerts
✓ No active weather alerts
Earthquakes · 30 days
M2.5strongest within 250 km
13 km SE of Pearsall, Texas
2 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 51 (Moderate). Observed Aug 14, 9:00 PM.
10.2 μg/m³PM2.5
15.7 μg/m³PM10
57.0 μg/m³Ozone
1.9 μg/m³NO₂
0.5 μg/m³SO₂
104.0 μg/m³CO
Source: Open-Meteo Air Quality ↗
Active weather alerts0
✓ No active National Weather Service alerts for this area.
Source: National Weather Service ↗
Earthquakes — last 30 days2
M2.5↗M2.5↗
13 km SE of Pearsall, Texas
Aug 13, 11:40 PM · 156 km away
13 km ESE of Pearsall, Texas
Aug 3, 5:16 PM · 153 km away
Source: USGS Earthquake Catalog ↗
Superfund sites
56 active EPA Superfund (National Priorities List) sites in TX of 70 ever listed.
Eldorado Chemical Co., Inc.
Live Oak · NPL Site · 53 km away
The state’s energy ledger
What TX’s grid runs on, its EV fleet and charging network, and where its mandate stands — from the national Energy Ledger.
Open the TX energy dossier →Snapshot generated Aug 15, 2:57 AM (showing last good reading while refreshing). All data is public and carries no personal information.