Air Quality in Walnut, United States

Drizzle
14.1°C · 62.8% humidity
14.1°
Feels 14.1°
31
Good
Air quality is satisfactory. Enjoy outdoor activities.
Calibrated model

Nearby Monitoring Stations

AQI Forecast Calibrated
51 7pm
50
28
47 10pm
47
47
47 1am
47
47
47 4am
47
47
47 7am
47
47
47 10am
47
47
47 1pm
47
47
22 4pm
22
22
Station readings
51
50
28
CAMS model adj -28
75
75
75
75
75
75
75
75
75
75
75
75
75
75
75
75
75
75
75
75
75
50
50
50
AD 728×90

PM2.5 Trend (24h)

32h · 2 stations
62.8%
Humidity
45.7 km/h
Wind SSW
1010.9 hPa
Pressure
2.9
UV Moderate
GoodModerateUSGUnhealthyVery UnhealthyHazardous

What is the weather forecast for Walnut?

Temperature & Precipitation

PM2.57.36 µg/m³ ✓ WHO
Good
PM1027.45 µg/m³
Good
UV INDEX2.9
Moderate
AD 300×250

What is the 7-day forecast for Walnut?

04-09
20.0° 10.2°
04-10
14.1° 8.6°
12.31 mm
04-11
10.5° 6.8°
19.81 mm
04-12
7.9° 3.7°
0.88 mm
04-13
11.9° 3.3°
0.19 mm
04-14
17.9° 7.2°
04-15
19.8° 12.0°
Both models agree Avg diff: 4.9°C

Where are air quality stations near Walnut?

53
Glendora-Laurel, Los Angeles
13.9 km
50
united-states-of-america-san-marino-sierra-madre-boulevard
25.2 km 32.0°C 37.0% RH PM2.5: 12.0 µg/m³ PM10: 13.0 µg/m³

What cities are near Walnut?

50 South San Jose Hills 35 Diamond Bar 45 Rowland Heights 52 Valinda 51 La Puente 50 Covina 52 West Covina 51 Hacienda Heights 52 West Puente Valley 52 Vincent

Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-04-09T22:09 UTC.