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 Mateo · updated 2 d ago · showing last good readingAir quality
52ModerateUS AQI
PM2.5 12μg/m³PM10 19μg/m³Ozone 59μg/m³NO₂ 7μg/m³
Water monitoring
San Mateo C Bl Lo Crystal Sp Res Nr San Mateo Ca · 4.7 km away
3.49 ft3/sStreamflow
4.13 ftGage height
14.3 deg CWater temperature
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 52 (Moderate). Observed Aug 31, 12:00 AM.
11.8 μg/m³PM2.5
18.6 μg/m³PM10
59.0 μg/m³Ozone
6.6 μg/m³NO₂
0.9 μg/m³SO₂
115.0 μg/m³CO
Source: Open-Meteo Air Quality ↗
Water monitoring — nearest site
San Mateo C Bl Lo Crystal Sp Res Nr San Mateo Ca · 4.7 km away · 65 sites in range
3.49 ft3/sStreamflow · Aug 31, 7:30 AM
4.13 ftGage height · Aug 31, 7:30 AM
14.3 deg CWater temperature · Aug 31, 7:30 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
M2.7↗M2.8↗M2.8↗M2.5↗M2.8↗
6 km NNW of Redwood Valley, CA
Aug 28, 12:15 PM · 210 km away
10 km N of Lake Pillsbury, CA
Aug 23, 9:37 AM · 222 km away
4 km NW of Parkfield, CA
Aug 23, 12:47 AM · 246 km away
2 km SE of Concord, CA
Aug 17, 8:18 AM · 52 km away
4 km N of San Leandro, CA
Aug 13, 4:07 PM · 27 km away
Source: USGS Earthquake Catalog ↗
Superfund sites
99 active EPA Superfund (National Priorities List) sites in CA of 116 ever listed.
Hunters Point Naval Shipyard
San Francisco · NPL Site · 18 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 Aug 31, 7:45 AM (showing last good reading while refreshing). All data is public and carries no personal information.