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 17 hr ago · showing last good readingAir quality
47GoodUS AQI
PM2.5 6μg/m³PM10 8μg/m³Ozone 58μg/m³NO₂ 8μg/m³
Water monitoring
San Marcos Rv At San Marcos, Tx · 1 km away
109 ft3/sStreamflow
3.72 ftGage height
Active alerts
✓ No active weather alerts
Earthquakes · 30 days
M3.6strongest within 250 km
12 km SW of Falls City, Texas
3 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 47 (Good). Observed Sep 2, 11:00 PM.
6.0 μg/m³PM2.5
7.5 μg/m³PM10
58.0 μg/m³Ozone
7.8 μg/m³NO₂
0.8 μg/m³SO₂
131.0 μg/m³CO
Source: Open-Meteo Air Quality ↗
Water monitoring — nearest site
San Marcos Rv At San Marcos, Tx · 1 km away · 89 sites in range
109 ft3/sStreamflow · Sep 3, 3:45 AM
3.72 ftGage height · Sep 3, 3:45 AM
Source: USGS Water Services ↗
Active weather alerts0
✓ No active National Weather Service alerts for this area.
Source: National Weather Service ↗
Earthquakes — last 30 days3
M2.8↗M3.6↗M2.5↗
12 km SW of Falls City, Texas
Sep 1, 7:23 PM · 111 km away
12 km SW of Falls City, Texas
Sep 1, 2:26 PM · 111 km away
13 km SE of Pearsall, Texas
Aug 13, 11:40 PM · 156 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 Sep 3, 4:27 AM (showing last good reading while refreshing). All data is public and carries no personal information.