Air Quality in South Pasadena, United States

Partly Cloudy
27.8°C · 52.4% humidity
27.8°
Feels 30.3°
38
Good
Air quality is satisfactory. Enjoy outdoor activities.
94 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
19 6am
18
10
38 9am
24
17
12 12pm
9
6
4 3pm
3
2
2 6pm
1
1
1 9pm
0
5
5 12am
5
5
5 3am
5
5
Station readings
19
18
10
CAMS model adj -61
83
66
66
66
54
54
54
54
54
54
54
54
54
54
54
54
54
66
66
66
66
66
66
66
AD 728×90

Air Quality Index Trend

47h · 2 stn

South Pasadena's air quality is primarily affected by vehicle emissions and industrial activity. Seasonal wildfire smoke and weather patterns can cause periodic air quality deterioration.

52.4%
Humidity
39.2 km/h
Wind SW
1017.0 hPa
Pressure
6.9
UV High
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5
38
9.1 µg/m³
PM10▲
44
48.05 µg/m³
050100150200300500

What is the weather forecast for South Pasadena?

Temperature & Precipitation

PM2.5 Trend

47h · 2 stations
PM2.59.1 µg/m³ ✓ WHO
Good
PM1048.05 µg/m³
Good
UV INDEX6.9
High
AD 300×250
Station readings (94 stations within 25 km)
9.1
Median
10.26
Average
0.35
Low
14.86
High
PM2.5 µg/m³ · Model: 19.2 · Bias: +10.1

What is the 7-day forecast for South Pasadena?

09-05
29.7° 22.0°
09-06
34.5° 20.2°
09-07
35.5° 20.1°
09-08
33.1° 16.8°
09-09
33.9° 17.9°
09-10
32.8° 14.7°
09-11
39.5° 20.0°
Both models agree Avg diff: 4.0°C

Where are air quality stations near South Pasadena?

30
San Pascual ES (6493)
2.1 km PM2.5: 7.1 µg/m³
42
Sierra Vista ES (6767)
2.4 km PM2.5: 10.1 µg/m³
35
Annandale ES (2151)
3.6 km PM2.5: 8.3 µg/m³
44
El Sereno ES (3562)
3.8 km PM2.5: 10.6 µg/m³
43
Sierra Park ES (6753)
4.2 km PM2.5: 10.4 µg/m³
3
RBAC Rose Bowl Aquatics Center
4.2 km 59.0% RH PM2.5: 0.7 µg/m³ PM10: 0.8 µg/m³
21
united-states-of-america-san-marino-sierra-madre-boulevard
5.0 km 31.2°C 35.0% RH PM2.5: 5.0 µg/m³ PM10: 6.0 µg/m³
41
Buchanan ES (2603)
5.2 km PM2.5: 9.9 µg/m³
34
Arroyo Seco Museum Science Magnet SPAN (4322)
5.2 km PM2.5: 8.2 µg/m³
39
Eagle Rock ES (3507)
6.2 km PM2.5: 9.3 µg/m³

What cities are near South Pasadena?

41 Alhambra 40 San Gabriel 42 Monterey Park 41 Rosemead 35 Altadena 40 Temple City 43 Atwater Village 37 La Cañada Flintridge 42 East Los Angeles 45 Boyle Heights
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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 2026-09-05T16:30 UTC.