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 Union City · updated 22 hr ago · showing last good readingAir quality
52ModerateUS AQI
PM2.5 9μg/m³PM10 13μg/m³Ozone 74μg/m³NO₂ 3μg/m³
Water monitoring
Alameda C Flood Channel A Union City Ca · 0.9 km away
0.86 ft3/sStreamflow
6.42 ftGage height
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 PM.
9.1 μg/m³PM2.5
12.8 μg/m³PM10
74.0 μg/m³Ozone
3.2 μg/m³NO₂
1.2 μg/m³SO₂
120.0 μg/m³CO
Source: Open-Meteo Air Quality ↗
Water monitoring — nearest site
Alameda C Flood Channel A Union City Ca · 0.9 km away · 83 sites in range
0.86 ft3/sStreamflow · Aug 31, 7:00 PM
6.42 ftGage height · Aug 31, 7:00 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
M2.7↗M2.7↗M2.7↗M2.8↗M2.8↗
22 km SE of Yosemite Valley, CA
Aug 28, 2:51 PM · 231 km away
6 km NNW of Redwood Valley, CA
Aug 28, 12:15 PM · 217 km away
4 km W of Walker, CA
Aug 24, 8:54 AM · 244 km away
10 km N of Lake Pillsbury, CA
Aug 23, 9:37 AM · 226 km away
4 km NW of Parkfield, CA
Aug 23, 12:47 AM · 233 km away
Source: USGS Earthquake Catalog ↗
Superfund sites
99 active EPA Superfund (National Priorities List) sites in CA of 116 ever listed.
South Bay Asbestos Area
Alviso · NPL Site · 19 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, 7:39 PM (showing last good reading while refreshing). All data is public and carries no personal information.