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 Waltham · updated 1 d ago · showing last good readingAir quality
49GoodUS AQI
PM2.5 17μg/m³PM10 18μg/m³Ozone 51μg/m³NO₂ 17μg/m³
Water monitoring
Charles River At Waltham, Ma · 0.5 km away
41.6 ft3/sStreamflow
0.84 ftGage height
Active alerts
✓ No active weather alerts
Earthquakes · 30 days
✓ None ≥ M2.5 nearby
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 49 (Good). Observed Aug 15, 8:00 AM.
16.8 μg/m³PM2.5
17.5 μg/m³PM10
51.0 μg/m³Ozone
17.0 μg/m³NO₂
1.5 μg/m³SO₂
182.0 μg/m³CO
Source: Open-Meteo Air Quality ↗
Water monitoring — nearest site
Charles River At Waltham, Ma · 0.5 km away · 112 sites in range
41.6 ft3/sStreamflow · Aug 15, 12:30 PM
0.84 ftGage height · Aug 15, 12:30 PM
Source: USGS Water Services ↗
Active weather alerts0
✓ No active National Weather Service alerts for this area.
Source: National Weather Service ↗
Earthquakes — last 30 days0
✓ No earthquakes ≥ M2.5 within 250 km.
Source: USGS Earthquake Catalog ↗
Superfund sites
33 active EPA Superfund (National Priorities List) sites in MA of 41 ever listed.
Hanscom Field/Hanscom Air Force Base
Bedford · NPL Site · 11 km away
The state’s energy ledger
What MA’s grid runs on, its EV fleet and charging network, and where its mandate stands — from the national Energy Ledger.
Open the MA energy dossier →Snapshot generated Aug 15, 12:43 PM (showing last good reading while refreshing). All data is public and carries no personal information.