Air Quality in Redwood City, United States

Partly Cloudy
21.2°C · 52.6% humidity
21.2°
Feels 21.2°
63
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
Model forecast

Nearby Monitoring Stations

AQI Forecast
27 2pm
34
34
63 5pm
55
69
65 8pm
62
59
58 11pm
57
36
35 2am
35
35
28 5am
34
34
34 8am
34
34
34 11am
34
34
AD 728×90

Air Quality Index Trend

45h · 102 stn

Redwood City's air quality is primarily affected by vehicle emissions and industrial activity. Seasonal wildfire smoke and weather patterns can cause periodic air quality deterioration. Current PM2.5 concentration in Redwood City is 1.2× the WHO 24-hour guideline of 15 µg/m³.

52.6%
Humidity
30.3 km/h
Wind WNW
1011.2 hPa
Pressure
12.9
UV Extreme
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
63
17.65 µg/m³
PM10
53
59.3 µg/m³
050100150200300500

What is the weather forecast for Redwood City?

Temperature & Precipitation

PM2.5 Trend

45h · 102 stations
PM2.517.65 µg/m³ ×1.2 WHO
Moderate
PM1059.3 µg/m³
Moderate
UV INDEX12.9
Extreme
AD 300×250

What is the 7-day forecast for Redwood City?

08-03
22.8° 13.1°
08-04
21.3° 13.2°
08-05
23.8° 12.2°
08-06
23.1° 12.6°
08-07
21.3° 13.2°
08-08
22.5° 14.3°
08-09
24.3° 12.1°
Both models agree Avg diff: 2.4°C

Where are air quality stations near Redwood City?

18
Redwood City, San Mateo, California
2.9 km PM2.5: 4.3 µg/m³
33
Emerald Hills
4.4 km PM2.5: 7.9 µg/m³
26
Berkeley-Palo Alto
8.6 km PM2.5: 6.3 µg/m³
35
Acterra!
13.2 km PM2.5: 8.4 µg/m³
25
Belle Air School
21.4 km PM2.5: 6.1 µg/m³
27
Garden Ave Residence
21.5 km PM2.5: 6.5 µg/m³
29
Parkside Intermediate School
21.7 km PM2.5: 6.9 µg/m³
25
San Bruno School District Office
22.0 km PM2.5: 6.1 µg/m³
27
Pacific Ave Residence
23.3 km PM2.5: 6.5 µg/m³
39
N Foothhill Blvd
23.3 km PM2.5: 9.3 µg/m³

What cities are near Redwood City?

64 San Carlos 64 Belmont 68 Menlo Park 68 East Palo Alto 64 Foster City 68 Palo Alto 91 San Mateo 63 Los Altos 4 Burlingame 64 Mountain View
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Data sources: Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-08-08T00:00 UTC.