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 Rosemead · updated 3 hr ago · showing last good reading

Air quality

81ModerateUS AQI

PM2.5 24μg/m³PM10 29μg/m³Ozone 100μg/m³NO₂ 36μg/m³

Water monitoring

No live streamgage nearby.

Active alerts

SevereExtreme Heat Warning

Earthquakes · 30 days

M3.8strongest within 250 km

4 km SE of Piru, CA

20 quakes ≥ M2.5

Superfund sites

99active in CA

Nearest: San Gabriel Valley (Area 3) · 5 km →

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 81 (Moderate). Observed Oct 1, 12:00 PM.

23.9 μg/m³PM2.5

28.6 μg/m³PM10

100.0 μg/m³Ozone

36.3 μg/m³NO₂

6.7 μg/m³SO₂

214.0 μg/m³CO

Source: Open-Meteo Air Quality ↗

Active weather alerts1

SevereExtreme Heat Warninguntil Oct 9, 3:00 AM

Extreme Heat Warning issued October 1 at 12:17PM PDT until October 8 at 8:00PM PDT by NWS Los Angeles/Oxnard CA

Catalina and Santa Barbara Islands; Santa Clarita Valley; Ventura County Beaches; Ventura County Inland Coast; Lake Casitas; Ojai Valley; Central Ventura County Valleys; Malibu Coast; Los Angeles County Beaches; Palos Verdes Hills; Los Angeles County Inland Coast including Downtown Los Angeles; Western Santa Monica Mountains Recreational Area; Eastern Santa Monica Mountains Recreational Area; Calabasas and Agoura Hills; Western San Fernando Valley; Eastern San Fernando Valley; Southeastern Ventura County Valleys; Santa Susana Mountains; Los Angeles County San Gabriel Valley

Source: National Weather Service ↗