Emerald Hills Air Quality

Monitoring Station · Redwood City, United States
13
Good
Air quality is satisfactory. Enjoy outdoor activities.
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Nearby Monitoring Stations

GoodModerateUSGUnhealthyVery UnhealthyHazardous
AQI Forecast Calibrated
20 9pm
20
20
20 12am
40
40
40 3am
40
40
40 6am
40
40
40 9am
40
20
— 12pm
—
—
— 3pm
—
—
— 6pm
—
—
CAMS model adj -14
34
34
34
34
54
54
54
54
54
54
54
54
54
54
34

Air Quality Forecast (24h)

PM2.53.2 µg/m³ ✓ WHO
Good
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Nearby Monitoring Stations

52
Redwood City, San Mateo, California
6.5 km PM2.5: 12.6 µg/m³
24
Redwood City, San Mateo, California
6.5 km PM2.5: 5.8 µg/m³
12
Berkeley-Palo Alto
10.7 km PM2.5: 2.8 µg/m³
15
Acterra!
14.8 km PM2.5: 3.6 µg/m³
16
Parkside Intermediate School
22.3 km PM2.5: 3.8 µg/m³
28
Parkside Intermediate School (redeployment)
22.3 km PM2.5: 6.6 µg/m³
25
Belle Air School
22.4 km PM2.5: 5.9 µg/m³
14
N Foothhill Blvd
22.9 km PM2.5: 3.3 µg/m³

Nearby Cities

31 Redwood City 31 San Carlos 31 Belmont 27 Menlo Park 27 Palo Alto 27 East Palo Alto 43 Foster City 43 San Mateo 27 Los Altos

Station data from AQICN. AQI forecast from ECMWF CAMS. AQI calculated using US EPA standard. Updated 2026-05-29T00:19 UTC.