Air Quality in Monrovia, United States

Windy
27.3°C · 48.0% humidity
27.3°
Feels 29.1°
38
Good
Air quality is satisfactory. Enjoy outdoor activities.
29 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
30 7am
16
17
38 10am
29
22
17 1pm
14
11
9 4pm
8
7
7 7pm
6
6
6 10pm
17
17
17 1am
17
17
17 4am
17
17
Station readings
30
16
CAMS model adj -49
66
66
66
54
54
54
54
54
54
54
54
54
54
54
54
54
66
66
66
66
66
66
66
66
AD 728×90

Air Quality Index Trend

46h · 2 stn

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

48.0%
Humidity
43.5 km/h
Wind SSW
1017.0 hPa
Pressure
6.9
UV High
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
38
9.02 µg/m³
PM10
38
41.2 µg/m³
050100150200300500

What is the weather forecast for Monrovia?

Temperature & Precipitation

PM2.5 Trend

46h · 2 stations
PM2.59.02 µg/m³ ✓ WHO
Good
PM1041.2 µg/m³
Good
UV INDEX6.9
High
AD 300×250
Station readings (29 stations within 25 km)
9.02
Median
9.55
Average
0.45
Low
13.24
High
PM2.5 µg/m³ · Model: 16.35 · Bias: +7.3

What is the 7-day forecast for Monrovia?

09-05
27.6° 18.6°
09-06
31.6° 17.1°
09-07
34.1° 17.9°
0.75 mm
09-08
34.1° 13.8°
0.19 mm
09-09
31.1° 15.7°
09-10
30.4° 10.8°
09-11
36.9° 16.8°
Both models agree Avg diff: 5.3°C

Where are air quality stations near Monrovia?

21
united-states-of-america-san-marino-sierra-madre-boulevard
9.5 km 31.2°C 35.0% RH PM2.5: 5.0 µg/m³ PM10: 6.0 µg/m³
26
Glendora-Laurel, Los Angeles
13.7 km PM2.5: 6.2 µg/m³
14
Glendora-Laurel, Los Angeles
13.7 km PM2.5: 3.4 µg/m³
3
RBAC Rose Bowl Aquatics Center
15.2 km 59.0% RH PM2.5: 0.7 µg/m³ PM10: 0.8 µg/m³
42
Sierra Vista ES (6767)
15.8 km PM2.5: 10.1 µg/m³
30
San Pascual ES (6493)
16.3 km PM2.5: 7.1 µg/m³
43
Sierra Park ES (6753)
17.3 km PM2.5: 10.4 µg/m³
35
Annandale ES (2151)
17.4 km PM2.5: 8.3 µg/m³
44
El Sereno ES (3562)
17.6 km PM2.5: 10.6 µg/m³
41
Buchanan ES (2603)
19.4 km PM2.5: 9.9 µg/m³

What cities are near Monrovia?

37 Duarte 38 Arcadia 40 Temple City 38 Baldwin Park 27 Azusa 31 Vincent 41 El Monte 41 Rosemead 36 West Covina 39 West Puente Valley
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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 2026-09-05T17:04 UTC.