Air Quality in Redwood City, United States

Clear
25.0°C · 40.2% humidity
25.0°
Feels 25.0°
23
Good
Air quality is satisfactory. Enjoy outdoor activities.
19 stations

Nearby Monitoring Stations

AQI Forecast
27 7am
27
27
23 10am
27
27
27 1pm
27
27
34 4pm
34
34
34 7pm
34
34
34 10pm
34
34
34 1am
34
34
34 4am
34
27
AD 728×90

Air Quality Index Trend

47h · 1 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.

40.2%
Humidity
32.4 km/h
Wind NW
1008.9 hPa
Pressure
9.4
UV Very High
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
23
5.56 µg/m³
PM10
13
13.7 µg/m³
050100150200300500

What is the weather forecast for Redwood City?

Temperature & Precipitation

PM2.5 Trend

47h · 1 station
PM2.55.56 µg/m³ ✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX9.4
Very High
AD 300×250
Station readings (19 stations within 25 km)
5.56
Median
6.28
Average
4.14
Low
12.2
High
PM2.5 µg/m³ · Model: 6.5 · Bias: +0.9

What is the 7-day forecast for Redwood City?

07-21
25.0° 11.5°
07-22
25.5° 14.2°
07-23
22.5° 16.4°
07-24
29.3° 12.6°
07-25
22.5° 14.3°
07-26
27.7° 11.8°
07-27
25.0° 12.1°
Both models agree Avg diff: 2.6°C

Where are air quality stations near Redwood City?

29
Redwood City, San Mateo, California
2.9 km PM2.5: 7.0 µg/m³
88
Redwood City, San Mateo, California
2.9 km PM2.5: 29.7 µg/m³
23
Emerald Hills
4.4 km PM2.5: 5.4 µg/m³
17
Berkeley-Palo Alto
8.6 km PM2.5: 4.1 µg/m³
24
Acterra!
13.2 km PM2.5: 5.8 µg/m³
27
Belle Air School
21.4 km PM2.5: 6.5 µg/m³
30
Garden Ave Residence
21.5 km PM2.5: 7.3 µg/m³
28
Parkside Intermediate School
21.7 km PM2.5: 6.8 µg/m³
28
Parkside Intermediate School (redeployment)
21.7 km PM2.5: 6.6 µg/m³
28
San Bruno School District Office
21.9 km PM2.5: 6.7 µg/m³

What cities are near Redwood City?

25 San Carlos 26 Belmont 19 Menlo Park 18 East Palo Alto 29 Foster City 18 Palo Alto 28 San Mateo 23 Los Altos 28 Burlingame 23 Mountain View
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Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-07-21T17:16 UTC.