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 12 hr ago · showing last good readingAir quality
29GoodUS AQI
PM2.5 5μg/m³PM10 7μg/m³Ozone 55μg/m³NO₂ 3μg/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
15.0 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 29 (Good). Observed Aug 14, 4:00 PM.
4.9 μg/m³PM2.5
7.0 μg/m³PM10
55.0 μg/m³Ozone
3.4 μg/m³NO₂
0.8 μg/m³SO₂
120.0 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 14, 11:15 PM
4.13 ftGage height · Aug 14, 11:15 PM
15.0 deg CWater temperature · Aug 14, 11:15 PM
Source: USGS Water Services ↗
Active weather alerts0
✓ No active National Weather Service alerts for this area.
Source: National Weather Service ↗
Earthquakes — last 30 days20
M2.8↗M3.8↗M3.2↗M3.2↗M2.8↗
4 km N of San Leandro, CA
Aug 13, 4:07 PM · 27 km away
3 km N of San Leandro, CA
Aug 13, 3:30 PM · 26 km away
6 km NW of The Geysers, CA
Aug 12, 10:30 AM · 145 km away
6 km NW of The Geysers, CA
Aug 12, 10:28 AM · 145 km away
7 km NW of The Geysers, CA
Aug 11, 9:35 PM · 147 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 14, 11:35 PM (showing last good reading while refreshing). All data is public and carries no personal information.