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 Merced · updated 6 hr ago · showing last good readingAir quality
43GoodUS AQI
PM2.5 8μg/m³PM10 26μg/m³Ozone 44μg/m³NO₂ 7μg/m³
Water monitoring
Salt Slough A Hwy 165 Nr Stevinson Ca · 33.2 km away
83.6 ft3/sStreamflow
67.26 ftGage height
21.0 deg CWater temperature
679 uS/cm @25CSpecific conductance
Active alerts
✓ No active weather alerts
Earthquakes · 30 days
M3.9strongest within 250 km
6 km NW of Pinnacles, CA
20 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 43 (Good). Observed Sep 3, 2:00 AM.
7.8 μg/m³PM2.5
26.4 μg/m³PM10
44.0 μg/m³Ozone
7.3 μg/m³NO₂
1.8 μg/m³SO₂
124.0 μg/m³CO
Source: Open-Meteo Air Quality ↗
Water monitoring — nearest site
Salt Slough A Hwy 165 Nr Stevinson Ca · 33.2 km away · 20 sites in range
83.6 ft3/sStreamflow · Sep 3, 9:30 AM
67.26 ftGage height · Sep 3, 9:30 AM
21.0 deg CWater temperature · Sep 3, 9:30 AM
679 uS/cm @25CSpecific conductance · Sep 3, 9:30 AM
Source: USGS Water Services ↗
Active weather alerts0
✓ No active National Weather Service alerts for this area.
Source: National Weather Service ↗
Earthquakes — last 30 days20
M2.6↗M2.7↗M2.5↗M2.7↗M2.8↗
2 km N of Middletown, CA
Sep 2, 3:49 AM · 248 km away
22 km SE of Yosemite Valley, CA
Aug 28, 2:51 PM · 99 km away
13 km W of Round Valley, CA
Aug 25, 9:51 AM · 154 km away
17 km SSE of Shandon, CA
Aug 25, 1:05 AM · 200 km away
18 km SW of Toms Place, CA
Aug 24, 1:23 PM · 147 km away
Source: USGS Earthquake Catalog ↗
Superfund sites
99 active EPA Superfund (National Priorities List) sites in CA of 116 ever listed.
Castle Air Force Base (6 Areas)
Merced · NPL Site · 10 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 3, 9:58 AM (showing last good reading while refreshing). All data is public and carries no personal information.