Air Quality in National City, United States

Windy
21.2°C · 73.1% humidity
21.2°
Feels 21.2°
30
Good
Air quality is satisfactory. Enjoy outdoor activities.
Model forecast

Nearby Monitoring Stations

AQI Forecast
34 3pm
34
34
30 6pm
34
34
34 9pm
34
34
54 12am
54
54
54 3am
54
54
54 6am
54
54
54 9am
54
54
54 12pm
54
54
AD 728×90

Air Quality Index Trend

47h · 1 stn

National 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.

73.1%
Humidity
65.7 km/h
Wind WNW
1009.8 hPa
Pressure
2.2
UV Moderate
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
30
7.1 µg/m³
PM10
19
20.55 µg/m³
050100150200300500

What is the weather forecast for National City?

Temperature & Precipitation

PM2.5 Trend

47h · 1 station
PM2.57.1 µg/m³ ✓ WHO
Good
PM1020.55 µg/m³
Good
UV INDEX2.2
Moderate
AD 300×250

What is the 7-day forecast for National City?

06-09
21.2° 17.7°
06-10
20.9° 17.8°
06-11
20.4° 18.2°
06-12
20.6° 17.7°
06-13
22.3° 18.0°
06-14
20.3° 19.1°
06-15
20.1° 16.8°
0.38 mm
Both models agree Avg diff: 1.4°C

Where are air quality stations near National City?

82
San Diego - Sherman Elementary School, San Diego, California
5.4 km PM2.5: 26.8 µg/m³
14
San Diego - Sherman Elementary School, San Diego, California
5.4 km PM2.5: 3.4 µg/m³
52
San Diego - Sherman Elementary School, San Diego, California
5.4 km PM2.5: 12.6 µg/m³
29
Smythe Avenue
13.5 km PM2.5: 6.9 µg/m³
29
Ocean View Hills
13.8 km PM2.5: 6.9 µg/m³
30
International Border
16.1 km PM2.5: 7.3 µg/m³
48
Otay Mesa - Donovan Correctional Facility, San Diego, California
19.3 km PM2.5: 11.5 µg/m³
43
Otay Mesa - Donovan Correctional Facility, San Diego, California
19.3 km PM2.5: 10.3 µg/m³
32
Otay Mesa - Donovan Correctional Facility, San Diego, California
19.3 km PM2.5: 7.7 µg/m³
33
Otay Mesa - Donovan Correctional Facility, San Diego, California
19.3 km PM2.5: 7.9 µg/m³

What cities are near National City?

30 Chula Vista 30 San Diego 30 Coronado 30 Lemon Grove 30 La Presa 30 Imperial Beach 30 Spring Valley 30 La Mesa 30 Casa de Oro-Mount Helix 30 Rancho San Diego
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Data sources: Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-06-09T01:06 UTC.