Emerald Hills Air Quality

Monitoring Station · Redwood City, United States
19
Good
Air quality is satisfactory. Enjoy outdoor activities.
Last Reading

Nearby Monitoring Stations

GoodModerateUSGUnhealthyVery UnhealthyHazardous
AQI Forecast Calibrated
19 1pm
19
19
19 4pm
19
19
19 7pm
19
19
19 10pm
12
12
19 1am
19
19
— 4am
—
—
— 7am
—
—
— 10am
—
—
Station readings
19
19
CAMS model adj -15
34
34
34
34
34
34
34
34
34
34
27
27
34
34
34

Air Quality Forecast (24h)

PM2.54.6 µg/m³ ✓ WHO
Good
View city history →

Nearby Monitoring Stations

7
Redwood City, San Mateo, California
6.5 km PM2.5: 1.7 µg/m³
12
Berkeley-Palo Alto
10.7 km PM2.5: 3.0 µg/m³
22
Acterra!
14.8 km PM2.5: 5.2 µg/m³
26
Garden Ave Residence
22.3 km PM2.5: 6.3 µg/m³
26
Parkside Intermediate School
22.3 km PM2.5: 6.3 µg/m³
23
Belle Air School
22.4 km PM2.5: 5.5 µg/m³
24
San Bruno School District Office
22.8 km PM2.5: 5.8 µg/m³
17
N Foothhill Blvd
22.9 km PM2.5: 4.1 µg/m³

Nearby Cities

13 Redwood City 18 San Carlos 20 Belmont 12 Menlo Park 14 Palo Alto 13 East Palo Alto 24 Foster City 25 San Mateo 18 Los Altos

Station data from AQICN. AQI forecast from ECMWF CAMS. AQI calculated using US EPA standard. Updated 2026-09-05T16:40 UTC.