ID: 156

AQSQID: 060410001

Site Name: San Rafael

Added: April 21, 2020, 6:24 p.m.

Updated: Aug. 3, 2021, 2:55 a.m.

Location: San Rafael (Montecito/Happy Valley), CA

Reporting: True, Located: True

Current AQI: 25.0

San Rafael (Montecito/Happy Valley) CA, US: 37.9722, -122.5189

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Aug. 3, 2021, 1 a.m. 4.8 ppb (5) 1.2 ppb (2) N/A 4.0 ppb (4) N/A N/A 27.0 ppb (25) 0.22 ppb (3) N/A 3.0 μg/m3 (13) 25.0
 
Aug. 3, 2021, midnight 2.9 ppb (3) 0.6 ppb (1) N/A 2.0 ppb (2) N/A N/A 33.0 ppb (31) 0.18 ppb (3) N/A 1.0 μg/m3 (5) 31.0
 
Aug. 2, 2021, 11 p.m. 4.1 ppb (4) 0.9 ppb (1) N/A 3.0 ppb (3) N/A N/A 37.0 ppb (35) 0.2 ppb (3) N/A 1.0 μg/m3 (5) 35.0
 
Aug. 2, 2021, 10 p.m. 2.9 ppb (3) 0.8 ppb (1) N/A 2.0 ppb (2) N/A N/A 35.0 ppb (33) 0.17 ppb (3) N/A 3.0 μg/m3 (13) 33.0
 
Aug. 2, 2021, 9 p.m. 2.1 ppb (2) 0.6 ppb (1) N/A 2.0 ppb (2) N/A N/A 35.0 ppb (33) 0.16 ppb (3) N/A 2.0 μg/m3 (9) 33.0
 
Aug. 2, 2021, 8 p.m. 1.9 ppb (2) 0.5 ppb (1) N/A 1.0 ppb (1) N/A N/A 35.0 ppb (33) 0.16 ppb (3) N/A 0.0 μg/m3 (0) 33.0
 
Aug. 2, 2021, 7 p.m. 2.2 ppb (3) 0.7 ppb (1) N/A 2.0 ppb (2) N/A N/A 34.0 ppb (32) 0.17 ppb (3) N/A 1.0 μg/m3 (5) 32.0
 
Aug. 2, 2021, 6 p.m. 3.0 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 32.0 ppb (30) 0.18 ppb (3) N/A 4.0 μg/m3 (17) 30.0
 
Aug. 2, 2021, 5 p.m. 2.0 ppb (2) 0.6 ppb (1) N/A 2.0 ppb (2) N/A N/A 32.0 ppb (30) 0.2 ppb (3) N/A 3.0 μg/m3 (13) 30.0
 
Aug. 2, 2021, 4 p.m. 3.7 ppb (4) 1.3 ppb (2) N/A 2.0 ppb (2) N/A N/A 29.0 ppb (27) 0.21 ppb (3) N/A 3.0 μg/m3 (13) 27.0
 
Aug. 2, 2021, 3 p.m. 4.4 ppb (5) 1.5 ppb (2) N/A 3.0 ppb (3) N/A N/A 28.0 ppb (26) 0.22 ppb (3) N/A 3.0 μg/m3 (13) 26.0
 
Aug. 2, 2021, 2 p.m. 16.5 ppb (16) 5.3 ppb (5) N/A 11.0 ppb (11) N/A N/A 15.0 ppb (14) 0.39 ppb (5) N/A 4.0 μg/m3 (17) 17.0
 
Aug. 2, 2021, 1 p.m. 11.9 ppb (12) 1.2 ppb (2) N/A 11.0 ppb (11) N/A N/A 10.0 ppb (10) 0.31 ppb (4) N/A 5.0 μg/m3 (21) 21.0
 
Aug. 2, 2021, noon 8.4 ppb (8) 0.5 ppb (1) N/A 8.0 ppb (8) N/A N/A 13.0 ppb (13) 0.23 ppb (3) N/A 2.0 μg/m3 (9) 13.0
 
Aug. 2, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 1.0 μg/m3 (5) 5.0
 
Aug. 2, 2021, 10 a.m. 2.3 ppb (3) 0.1 ppb (1) N/A 2.0 ppb (2) N/A N/A 17.0 ppb (16) 0.17 ppb (3) N/A 3.0 μg/m3 (13) 16.0
 
Aug. 2, 2021, 9 a.m. 2.6 ppb (3) 0.2 ppb (1) N/A 2.0 ppb (2) N/A N/A 18.0 ppb (17) 0.16 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
Aug. 2, 2021, 8 a.m. 2.0 ppb (2) 0.1 ppb (1) N/A 2.0 ppb (2) N/A N/A 19.0 ppb (18) 0.17 ppb (3) N/A 3.0 μg/m3 (13) 18.0
 
Aug. 2, 2021, 7 a.m. 1.4 ppb (2) 0.1 ppb (1) N/A 1.0 ppb (1) N/A N/A 24.0 ppb (23) 0.16 ppb (3) N/A 2.0 μg/m3 (9) 23.0
 
Aug. 2, 2021, 6 a.m. 1.8 ppb (2) 0.2 ppb (1) N/A 2.0 ppb (2) N/A N/A 24.0 ppb (23) 0.17 ppb (3) N/A -1.0 μg/m3 (0) 23.0
 
Aug. 2, 2021, 5 a.m. 2.3 ppb (3) 0.6 ppb (1) N/A 2.0 ppb (2) N/A N/A 24.0 ppb (23) 0.18 ppb (3) N/A 1.0 μg/m3 (5) 23.0
 
Aug. 2, 2021, 4 a.m. 2.8 ppb (3) 0.8 ppb (1) N/A 2.0 ppb (2) N/A N/A 25.0 ppb (24) 0.19 ppb (3) N/A 4.0 μg/m3 (17) 24.0
 
Aug. 2, 2021, 3 a.m. 4.2 ppb (4) 1.6 ppb (2) N/A 3.0 ppb (3) N/A N/A 25.0 ppb (24) 0.2 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
Aug. 2, 2021, 2 a.m. 3.2 ppb (4) 1.4 ppb (2) N/A 2.0 ppb (2) N/A N/A 27.0 ppb (25) 0.19 ppb (3) N/A 8.0 μg/m3 (34) 34.0
 
Aug. 2, 2021, 1 a.m. 4.3 ppb (5) 1.6 ppb (2) N/A 3.0 ppb (3) N/A N/A 29.0 ppb (27) 0.19 ppb (3) N/A 11.0 μg/m3 (46) 46.0
 
Aug. 2, 2021, midnight 3.7 ppb (4) 1.3 ppb (2) N/A 2.0 ppb (2) N/A N/A 30.0 ppb (28) 0.18 ppb (3) N/A 3.0 μg/m3 (13) 28.0
 
Aug. 1, 2021, 11 p.m. 2.1 ppb (2) 0.6 ppb (1) N/A 2.0 ppb (2) N/A N/A 29.0 ppb (27) 0.17 ppb (3) N/A 2.0 μg/m3 (9) 27.0
 
Aug. 1, 2021, 10 p.m. 2.5 ppb (3) 0.7 ppb (1) N/A 2.0 ppb (2) N/A N/A 28.0 ppb (26) 0.18 ppb (3) N/A 1.0 μg/m3 (5) 26.0
 
Aug. 1, 2021, 9 p.m. 2.3 ppb (3) 0.8 ppb (1) N/A 2.0 ppb (2) N/A N/A 30.0 ppb (28) 0.18 ppb (3) N/A 2.0 μg/m3 (9) 28.0
 
Aug. 1, 2021, 8 p.m. 1.9 ppb (2) 0.6 ppb (1) N/A 1.0 ppb (1) N/A N/A 31.0 ppb (29) 0.18 ppb (3) N/A 1.0 μg/m3 (5) 29.0
 
Aug. 1, 2021, 7 p.m. 1.9 ppb (2) 0.6 ppb (1) N/A 1.0 ppb (1) N/A N/A 30.0 ppb (28) 0.18 ppb (3) N/A 0.0 μg/m3 (0) 28.0
 
Aug. 1, 2021, 6 p.m. 1.7 ppb (2) 0.5 ppb (1) N/A 1.0 ppb (1) N/A N/A 30.0 ppb (28) 0.19 ppb (3) N/A -1.0 μg/m3 (0) 28.0
 
Aug. 1, 2021, 5 p.m. 1.9 ppb (2) 0.7 ppb (1) N/A 1.0 ppb (1) N/A N/A 28.0 ppb (26) 0.21 ppb (3) N/A -1.0 μg/m3 (0) 26.0
 
Aug. 1, 2021, 4 p.m. 1.3 ppb (2) 0.5 ppb (1) N/A 1.0 ppb (1) N/A N/A 24.0 ppb (23) 0.2 ppb (3) N/A 1.0 μg/m3 (5) 23.0
 
Aug. 1, 2021, 3 p.m. 2.2 ppb (3) 0.6 ppb (1) N/A 2.0 ppb (2) N/A N/A 22.0 ppb (21) 0.21 ppb (3) N/A 2.0 μg/m3 (9) 21.0
 
Aug. 1, 2021, 2 p.m. 2.3 ppb (3) 0.5 ppb (1) N/A 2.0 ppb (2) N/A N/A 21.0 ppb (20) 0.21 ppb (3) N/A 0.0 μg/m3 (0) 20.0
 
Aug. 1, 2021, 1 p.m. 1.1 ppb (2) 0.1 ppb (1) N/A 1.0 ppb (1) N/A N/A 21.0 ppb (20) 0.19 ppb (3) N/A 0.0 μg/m3 (0) 20.0
 
Aug. 1, 2021, noon 2.2 ppb (3) 0.3 ppb (1) N/A 2.0 ppb (2) N/A N/A 16.0 ppb (15) 0.18 ppb (3) N/A 3.0 μg/m3 (13) 15.0
 
Aug. 1, 2021, 11 a.m. 2.1 ppb (2) 0.2 ppb (1) N/A 2.0 ppb (2) N/A N/A 13.0 ppb (13) 0.19 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
Aug. 1, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 2.0 μg/m3 (9) 9.0
 
Aug. 1, 2021, 9 a.m. 2.7 ppb (3) 0.1 ppb (1) N/A 3.0 ppb (3) N/A N/A 14.0 ppb (13) 0.18 ppb (3) N/A 0.0 μg/m3 (0) 13.0
 
Aug. 1, 2021, 8 a.m. 2.1 ppb (2) 0.1 ppb (1) N/A 2.0 ppb (2) N/A N/A 17.0 ppb (16) 0.16 ppb (3) N/A 1.0 μg/m3 (5) 16.0
 
Aug. 1, 2021, 7 a.m. 2.1 ppb (2) 0.1 ppb (1) N/A 2.0 ppb (2) N/A N/A 22.0 ppb (21) 0.16 ppb (3) N/A 1.0 μg/m3 (5) 21.0
 
Aug. 1, 2021, 6 a.m. 2.8 ppb (3) 0.1 ppb (1) N/A 3.0 ppb (3) N/A N/A 20.0 ppb (19) 0.18 ppb (3) N/A 3.0 μg/m3 (13) 19.0
 
Aug. 1, 2021, 5 a.m. 3.3 ppb (4) 0.1 ppb (1) N/A 3.0 ppb (3) N/A N/A 17.0 ppb (16) 0.2 ppb (3) N/A 3.0 μg/m3 (13) 16.0
 
Aug. 1, 2021, 4 a.m. 3.0 ppb (3) 0.1 ppb (1) N/A 3.0 ppb (3) N/A N/A 18.0 ppb (17) 0.21 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
Aug. 1, 2021, 3 a.m. 3.9 ppb (4) 0.2 ppb (1) N/A 4.0 ppb (4) N/A N/A 18.0 ppb (17) 0.23 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
Aug. 1, 2021, 2 a.m. 3.6 ppb (4) 0.5 ppb (1) N/A 3.0 ppb (3) N/A N/A 20.0 ppb (19) 0.23 ppb (3) N/A 2.0 μg/m3 (9) 19.0
 
Aug. 1, 2021, 1 a.m. 3.8 ppb (4) 0.9 ppb (1) N/A 3.0 ppb (3) N/A N/A 25.0 ppb (24) 0.24 ppb (3) N/A 3.0 μg/m3 (13) 24.0
 
Aug. 1, 2021, midnight 3.1 ppb (3) 0.9 ppb (1) N/A 2.0 ppb (2) N/A N/A 28.0 ppb (26) 0.2 ppb (3) N/A 5.0 μg/m3 (21) 26.0
 
July 31, 2021, 11 p.m. 2.5 ppb (3) 0.8 ppb (1) N/A 2.0 ppb (2) N/A N/A 28.0 ppb (26) 0.18 ppb (3) N/A 1.0 μg/m3 (5) 26.0
 
July 31, 2021, 10 p.m. 2.8 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 26.0 ppb (25) 0.18 ppb (3) N/A 1.0 μg/m3 (5) 25.0
 
July 31, 2021, 9 p.m. 2.6 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 24.0 ppb (23) 0.18 ppb (3) N/A 0.0 μg/m3 (0) 23.0
 
July 31, 2021, 8 p.m. 2.4 ppb (3) 0.9 ppb (1) N/A 1.0 ppb (1) N/A N/A 24.0 ppb (23) 0.18 ppb (3) N/A 1.0 μg/m3 (5) 23.0
 
July 31, 2021, 7 p.m. 2.8 ppb (3) 1.2 ppb (2) N/A 2.0 ppb (2) N/A N/A 22.0 ppb (21) 0.19 ppb (3) N/A 3.0 μg/m3 (13) 21.0
 
July 31, 2021, 6 p.m. 2.4 ppb (3) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 19.0 ppb (18) 0.19 ppb (3) N/A 3.0 μg/m3 (13) 18.0
 
July 31, 2021, 5 p.m. 2.2 ppb (3) 1.1 ppb (2) N/A 1.0 ppb (1) N/A N/A 17.0 ppb (16) 0.2 ppb (3) N/A 2.0 μg/m3 (9) 16.0
 
July 31, 2021, 4 p.m. 4.2 ppb (4) 1.8 ppb (2) N/A 2.0 ppb (2) N/A N/A 15.0 ppb (14) 0.23 ppb (3) N/A 1.0 μg/m3 (5) 14.0
 
July 31, 2021, 3 p.m. 3.5 ppb (4) 1.4 ppb (2) N/A 2.0 ppb (2) N/A N/A 13.0 ppb (13) 0.22 ppb (3) N/A 1.0 μg/m3 (5) 13.0
 
July 31, 2021, 2 p.m. 3.7 ppb (4) 1.1 ppb (2) N/A 3.0 ppb (3) N/A N/A 9.0 ppb (9) 0.23 ppb (3) N/A 3.0 μg/m3 (13) 13.0
 
July 31, 2021, 1 p.m. 4.8 ppb (5) 1.0 ppb (1) N/A 4.0 ppb (4) N/A N/A 5.0 ppb (5) 0.23 ppb (3) N/A 3.0 μg/m3 (13) 13.0
 
July 31, 2021, noon 3.6 ppb (4) 0.3 ppb (1) N/A 3.0 ppb (3) N/A N/A 6.0 ppb (6) 0.2 ppb (3) N/A 3.0 μg/m3 (13) 13.0
 
July 31, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 3.0 μg/m3 (13) 13.0
 
July 31, 2021, 10 a.m. 2.0 ppb (2) 0.1 ppb (1) N/A 2.0 ppb (2) N/A N/A 8.0 ppb (8) 0.17 ppb (3) N/A 1.0 μg/m3 (5) 8.0
 
July 31, 2021, 9 a.m. 1.3 ppb (2) 0.1 ppb (1) N/A 1.0 ppb (1) N/A N/A 12.0 ppb (12) 0.15 ppb (2) N/A 0.0 μg/m3 (0) 12.0
 
July 31, 2021, 8 a.m. 1.3 ppb (2) 0.1 ppb (1) N/A 1.0 ppb (1) N/A N/A 14.0 ppb (13) 0.14 ppb (2) N/A -1.0 μg/m3 (0) 13.0
 
July 31, 2021, 7 a.m. 1.4 ppb (2) 0.2 ppb (1) N/A 1.0 ppb (1) N/A N/A 14.0 ppb (13) 0.15 ppb (2) N/A 1.0 μg/m3 (5) 13.0
 
July 31, 2021, 6 a.m. 1.2 ppb (2) 0.1 ppb (1) N/A 1.0 ppb (1) N/A N/A 14.0 ppb (13) 0.15 ppb (2) N/A 2.0 μg/m3 (9) 13.0
 
July 31, 2021, 5 a.m. 2.4 ppb (3) 0.1 ppb (1) N/A 2.0 ppb (2) N/A N/A 13.0 ppb (13) 0.18 ppb (3) N/A 3.0 μg/m3 (13) 13.0
 
July 31, 2021, 4 a.m. 3.3 ppb (4) 0.1 ppb (1) N/A 3.0 ppb (3) N/A N/A 15.0 ppb (14) 0.2 ppb (3) N/A 3.0 μg/m3 (13) 14.0
 
July 31, 2021, 3 a.m. 3.9 ppb (4) 0.2 ppb (1) N/A 4.0 ppb (4) N/A N/A 17.0 ppb (16) 0.22 ppb (3) N/A 3.0 μg/m3 (13) 16.0
 
July 31, 2021, 2 a.m. 4.0 ppb (4) 0.6 ppb (1) N/A 3.0 ppb (3) N/A N/A 20.0 ppb (19) 0.22 ppb (3) N/A 2.0 μg/m3 (9) 19.0
 
July 31, 2021, 1 a.m. 4.7 ppb (5) 1.2 ppb (2) N/A 4.0 ppb (4) N/A N/A 23.0 ppb (22) 0.23 ppb (3) N/A 4.0 μg/m3 (17) 22.0
 
July 31, 2021, midnight 4.8 ppb (5) 1.4 ppb (2) N/A 3.0 ppb (3) N/A N/A 25.0 ppb (24) 0.23 ppb (3) N/A 3.0 μg/m3 (13) 24.0
 
July 30, 2021, 11 p.m. 4.4 ppb (5) 1.3 ppb (2) N/A 3.0 ppb (3) N/A N/A 27.0 ppb (25) 0.22 ppb (3) N/A 3.0 μg/m3 (13) 25.0
 
July 30, 2021, 10 p.m. 4.1 ppb (4) 1.2 ppb (2) N/A 3.0 ppb (3) N/A N/A 27.0 ppb (25) 0.2 ppb (3) N/A 3.0 μg/m3 (13) 25.0
 
July 30, 2021, 9 p.m. 3.6 ppb (4) 1.1 ppb (2) N/A 3.0 ppb (3) N/A N/A 28.0 ppb (26) 0.2 ppb (3) N/A 5.0 μg/m3 (21) 26.0
 
July 30, 2021, 8 p.m. 3.6 ppb (4) 1.2 ppb (2) N/A 2.0 ppb (2) N/A N/A 27.0 ppb (25) 0.2 ppb (3) N/A 4.0 μg/m3 (17) 25.0
 
July 30, 2021, 7 p.m. 4.0 ppb (4) 1.3 ppb (2) N/A 3.0 ppb (3) N/A N/A 25.0 ppb (24) 0.21 ppb (3) N/A 1.0 μg/m3 (5) 24.0
 
July 30, 2021, 6 p.m. 4.5 ppb (5) 1.7 ppb (2) N/A 3.0 ppb (3) N/A N/A 23.0 ppb (22) 0.21 ppb (3) N/A 0.0 μg/m3 (0) 22.0
 
July 30, 2021, 5 p.m. 4.4 ppb (5) 1.9 ppb (2) N/A 3.0 ppb (3) N/A N/A 19.0 ppb (18) 0.21 ppb (3) N/A 2.0 μg/m3 (9) 18.0
 
July 30, 2021, 4 p.m. 5.2 ppb (5) 2.3 ppb (3) N/A 3.0 ppb (3) N/A N/A 17.0 ppb (16) 0.23 ppb (3) N/A 3.0 μg/m3 (13) 16.0
 
July 30, 2021, 3 p.m. 6.4 ppb (7) 2.5 ppb (3) N/A 4.0 ppb (4) N/A N/A 16.0 ppb (15) 0.24 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
July 30, 2021, 2 p.m. 6.0 ppb (6) 1.6 ppb (2) N/A 4.0 ppb (4) N/A N/A 13.0 ppb (13) 0.27 ppb (4) N/A 4.0 μg/m3 (17) 17.0
 
July 30, 2021, 1 p.m. 4.2 ppb (4) 0.3 ppb (1) N/A 4.0 ppb (4) N/A N/A 13.0 ppb (13) 0.2 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
July 30, 2021, noon 3.4 ppb (4) 0.2 ppb (1) N/A 3.0 ppb (3) N/A N/A 13.0 ppb (13) 0.18 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
July 30, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
July 30, 2021, 10 a.m. 2.4 ppb (3) 0.1 ppb (1) N/A 2.0 ppb (2) N/A N/A 15.0 ppb (14) 0.17 ppb (3) N/A 3.0 μg/m3 (13) 14.0
 
July 30, 2021, 9 a.m. 1.1 ppb (2) 0.1 ppb (1) N/A 1.0 ppb (1) N/A N/A 19.0 ppb (18) 0.17 ppb (3) N/A 2.0 μg/m3 (9) 18.0
 
July 30, 2021, 8 a.m. 1.4 ppb (2) 0.1 ppb (1) N/A 1.0 ppb (1) N/A N/A 18.0 ppb (17) 0.17 ppb (3) N/A 3.0 μg/m3 (13) 17.0
 
July 30, 2021, 7 a.m. 1.5 ppb (2) 0.1 ppb (1) N/A 2.0 ppb (2) N/A N/A 19.0 ppb (18) 0.18 ppb (3) N/A 4.0 μg/m3 (17) 18.0
 
July 30, 2021, 6 a.m. 2.5 ppb (3) 0.1 ppb (1) N/A 2.0 ppb (2) N/A N/A 19.0 ppb (18) 0.19 ppb (3) N/A 3.0 μg/m3 (13) 18.0
 
July 30, 2021, 5 a.m. 2.8 ppb (3) 0.1 ppb (1) N/A 3.0 ppb (3) N/A N/A 20.0 ppb (19) 0.21 ppb (3) N/A 3.0 μg/m3 (13) 19.0
 
July 30, 2021, 4 a.m. 3.5 ppb (4) 0.1 ppb (1) N/A 3.0 ppb (3) N/A N/A 20.0 ppb (19) 0.23 ppb (3) N/A 1.0 μg/m3 (5) 19.0
 
July 30, 2021, 3 a.m. 3.1 ppb (3) 0.2 ppb (1) N/A 3.0 ppb (3) N/A N/A 22.0 ppb (21) 0.23 ppb (3) N/A 2.0 μg/m3 (9) 21.0
 
July 30, 2021, 2 a.m. 3.7 ppb (4) 0.5 ppb (1) N/A 3.0 ppb (3) N/A N/A 23.0 ppb (22) 0.23 ppb (3) N/A 2.0 μg/m3 (9) 22.0
 
July 30, 2021, 1 a.m. 4.2 ppb (4) 0.9 ppb (1) N/A 3.0 ppb (3) N/A N/A 25.0 ppb (24) 0.23 ppb (3) N/A 2.0 μg/m3 (9) 24.0
 
July 30, 2021, midnight 5.2 ppb (5) 1.4 ppb (2) N/A 4.0 ppb (4) N/A N/A 29.0 ppb (27) 0.24 ppb (3) N/A 4.0 μg/m3 (17) 27.0
 
July 29, 2021, 11 p.m. 5.0 ppb (5) 1.5 ppb (2) N/A 4.0 ppb (4) N/A N/A 30.0 ppb (28) 0.25 ppb (3) N/A 4.0 μg/m3 (17) 28.0
 
July 29, 2021, 10 p.m. 4.0 ppb (4) 1.1 ppb (2) N/A 3.0 ppb (3) N/A N/A 31.0 ppb (29) 0.23 ppb (3) N/A 5.0 μg/m3 (21) 29.0
 
July 29, 2021, 9 p.m. 3.8 ppb (4) 1.1 ppb (2) N/A 3.0 ppb (3) N/A N/A 30.0 ppb (28) 0.23 ppb (3) N/A 6.0 μg/m3 (25) 28.0
 
July 29, 2021, 8 p.m. 3.7 ppb (4) 1.1 ppb (2) N/A 3.0 ppb (3) N/A N/A 28.0 ppb (26) 0.21 ppb (3) N/A 3.0 μg/m3 (13) 26.0
 
July 29, 2021, 7 p.m. 3.7 ppb (4) 1.2 ppb (2) N/A 3.0 ppb (3) N/A N/A 26.0 ppb (25) 0.21 ppb (3) N/A 3.0 μg/m3 (13) 25.0
 
July 29, 2021, 6 p.m. 3.8 ppb (4) 1.3 ppb (2) N/A 3.0 ppb (3) N/A N/A 24.0 ppb (23) 0.21 ppb (3) N/A 2.0 μg/m3 (9) 23.0
 
July 29, 2021, 5 p.m. 4.0 ppb (4) 1.6 ppb (2) N/A 2.0 ppb (2) N/A N/A 21.0 ppb (20) 0.21 ppb (3) N/A 3.0 μg/m3 (13) 20.0
 
July 29, 2021, 4 p.m. 7.4 ppb (7) 3.3 ppb (4) N/A 4.0 ppb (4) N/A N/A 17.0 ppb (16) 0.23 ppb (3) N/A 3.0 μg/m3 (13) 16.0
 
July 29, 2021, 3 p.m. 7.2 ppb (7) 2.9 ppb (3) N/A 4.0 ppb (4) N/A N/A 14.0 ppb (13) 0.25 ppb (3) N/A 2.0 μg/m3 (9) 13.0
 
July 29, 2021, 2 p.m. 7.8 ppb (8) 2.1 ppb (2) N/A 6.0 ppb (6) N/A N/A 12.0 ppb (12) 0.25 ppb (3) N/A 2.0 μg/m3 (9) 12.0
 
July 29, 2021, 1 p.m. 3.8 ppb (4) 0.4 ppb (1) N/A 3.0 ppb (3) N/A N/A 12.0 ppb (12) 0.18 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
July 29, 2021, noon 3.5 ppb (4) 0.2 ppb (1) N/A 3.0 ppb (3) N/A N/A 13.0 ppb (13) 0.18 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
July 29, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 3.0 μg/m3 (13) 13.0
 
July 29, 2021, 10 a.m. 1.5 ppb (2) 0.1 ppb (1) N/A 1.0 ppb (1) N/A N/A 13.0 ppb (13) 0.14 ppb (2) N/A 4.0 μg/m3 (17) 17.0
 
July 29, 2021, 9 a.m. 1.2 ppb (2) 0.1 ppb (1) N/A 1.0 ppb (1) N/A N/A 14.0 ppb (13) 0.14 ppb (2) N/A 3.0 μg/m3 (13) 13.0
 
July 29, 2021, 8 a.m. 1.1 ppb (2) 0.1 ppb (1) N/A 1.0 ppb (1) N/A N/A 14.0 ppb (13) 0.14 ppb (2) N/A 3.0 μg/m3 (13) 13.0
 
July 29, 2021, 7 a.m. 1.5 ppb (2) 0.1 ppb (1) N/A 1.0 ppb (1) N/A N/A 14.0 ppb (13) 0.15 ppb (2) N/A 3.0 μg/m3 (13) 13.0
 
July 29, 2021, 6 a.m. 2.0 ppb (2) 0.1 ppb (1) N/A 2.0 ppb (2) N/A N/A 15.0 ppb (14) 0.16 ppb (3) N/A 1.0 μg/m3 (5) 14.0
 
July 29, 2021, 5 a.m. 2.7 ppb (3) 0.1 ppb (1) N/A 3.0 ppb (3) N/A N/A 15.0 ppb (14) 0.18 ppb (3) N/A 2.0 μg/m3 (9) 14.0
 
July 29, 2021, 4 a.m. 2.8 ppb (3) 0.1 ppb (1) N/A 3.0 ppb (3) N/A N/A 17.0 ppb (16) 0.18 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
July 29, 2021, 3 a.m. 3.1 ppb (3) 0.2 ppb (1) N/A 3.0 ppb (3) N/A N/A 17.0 ppb (16) 0.19 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
July 29, 2021, 2 a.m. 3.9 ppb (4) 0.5 ppb (1) N/A 3.0 ppb (3) N/A N/A 19.0 ppb (18) 0.21 ppb (3) N/A 4.0 μg/m3 (17) 18.0
 
July 29, 2021, 1 a.m. 4.1 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 22.0 ppb (21) 0.2 ppb (3) N/A 4.0 μg/m3 (17) 21.0
 
July 29, 2021, midnight 5.2 ppb (5) 1.6 ppb (2) N/A 4.0 ppb (4) N/A N/A 24.0 ppb (23) 0.2 ppb (3) N/A 2.0 μg/m3 (9) 23.0
 
July 28, 2021, 11 p.m. 5.3 ppb (5) 1.6 ppb (2) N/A 4.0 ppb (4) N/A N/A 27.0 ppb (25) 0.21 ppb (3) N/A 2.0 μg/m3 (9) 25.0
 
July 28, 2021, 10 p.m. 4.5 ppb (5) 1.2 ppb (2) N/A 3.0 ppb (3) N/A N/A 30.0 ppb (28) 0.19 ppb (3) N/A 3.0 μg/m3 (13) 28.0
 
July 28, 2021, 9 p.m. 4.3 ppb (5) 1.2 ppb (2) N/A 3.0 ppb (3) N/A N/A 29.0 ppb (27) 0.2 ppb (3) N/A 3.0 μg/m3 (13) 27.0
 
July 28, 2021, 8 p.m. 3.8 ppb (4) 1.2 ppb (2) N/A 3.0 ppb (3) N/A N/A 29.0 ppb (27) 0.19 ppb (3) N/A 3.0 μg/m3 (13) 27.0
 
July 28, 2021, 7 p.m. 4.3 ppb (5) 1.6 ppb (2) N/A 3.0 ppb (3) N/A N/A 25.0 ppb (24) 0.19 ppb (3) N/A 3.0 μg/m3 (13) 24.0
 
July 28, 2021, 6 p.m. 4.6 ppb (5) 1.7 ppb (2) N/A 3.0 ppb (3) N/A N/A 24.0 ppb (23) 0.19 ppb (3) N/A 2.0 μg/m3 (9) 23.0
 
July 28, 2021, 5 p.m. 4.3 ppb (5) 1.7 ppb (2) N/A 3.0 ppb (3) N/A N/A 20.0 ppb (19) 0.18 ppb (3) N/A 3.0 μg/m3 (13) 19.0
 
July 28, 2021, 4 p.m. 5.9 ppb (6) 2.4 ppb (3) N/A 4.0 ppb (4) N/A N/A 17.0 ppb (16) 0.21 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
July 28, 2021, 3 p.m. 9.2 ppb (9) 4.2 ppb (4) N/A 5.0 ppb (5) N/A N/A 12.0 ppb (12) 0.26 ppb (4) N/A 7.0 μg/m3 (30) 30.0
 
July 28, 2021, 2 p.m. 15.5 ppb (15) 7.2 ppb (7) N/A 8.0 ppb (8) N/A N/A 5.0 ppb (5) 0.33 ppb (4) N/A 5.0 μg/m3 (21) 21.0
 
July 28, 2021, 1 p.m. 6.9 ppb (7) 1.3 ppb (2) N/A 6.0 ppb (6) N/A N/A 5.0 ppb (5) 0.21 ppb (3) N/A 2.0 μg/m3 (9) 9.0
 
July 28, 2021, noon 4.6 ppb (5) 0.2 ppb (1) N/A 4.0 ppb (4) N/A N/A 6.0 ppb (6) 0.18 ppb (3) N/A 1.0 μg/m3 (5) 6.0
 
July 28, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 2.0 μg/m3 (9) 9.0
 
July 28, 2021, 10 a.m. 2.2 ppb (3) 0.1 ppb (1) N/A 2.0 ppb (2) N/A N/A 12.0 ppb (12) 0.15 ppb (2) N/A 2.0 μg/m3 (9) 12.0
 
July 28, 2021, 9 a.m. 2.0 ppb (2) 0.1 ppb (1) N/A 2.0 ppb (2) N/A N/A 13.0 ppb (13) 0.15 ppb (2) N/A 1.0 μg/m3 (5) 13.0
 
July 28, 2021, 8 a.m. 3.0 ppb (3) 0.1 ppb (1) N/A 3.0 ppb (3) N/A N/A 14.0 ppb (13) 0.14 ppb (2) N/A 3.0 μg/m3 (13) 13.0
 
July 28, 2021, 7 a.m. 2.3 ppb (3) 0.1 ppb (1) N/A 2.0 ppb (2) N/A N/A 16.0 ppb (15) 0.14 ppb (2) N/A 3.0 μg/m3 (13) 15.0
 
July 28, 2021, 6 a.m. 2.9 ppb (3) 0.1 ppb (1) N/A 3.0 ppb (3) N/A N/A 15.0 ppb (14) 0.16 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
July 28, 2021, 5 a.m. 3.1 ppb (3) 0.1 ppb (1) N/A 3.0 ppb (3) N/A N/A 15.0 ppb (14) 0.18 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
July 28, 2021, 4 a.m. 3.3 ppb (4) 0.2 ppb (1) N/A 3.0 ppb (3) N/A N/A 17.0 ppb (16) 0.19 ppb (3) N/A 2.0 μg/m3 (9) 16.0
 
July 28, 2021, 3 a.m. 4.4 ppb (5) 0.4 ppb (1) N/A 4.0 ppb (4) N/A N/A 19.0 ppb (18) 0.2 ppb (3) N/A 3.0 μg/m3 (13) 18.0
 
July 28, 2021, 2 a.m. 3.9 ppb (4) 0.6 ppb (1) N/A 3.0 ppb (3) N/A N/A 22.0 ppb (21) 0.2 ppb (3) N/A 5.0 μg/m3 (21) 21.0
 
July 28, 2021, 1 a.m. 4.9 ppb (5) 1.0 ppb (1) N/A 4.0 ppb (4) N/A N/A 24.0 ppb (23) 0.21 ppb (3) N/A 1.0 μg/m3 (5) 23.0
 
July 28, 2021, midnight 5.6 ppb (6) 1.4 ppb (2) N/A 4.0 ppb (4) N/A N/A 28.0 ppb (26) 0.22 ppb (3) N/A 2.0 μg/m3 (9) 26.0
 
July 27, 2021, 11 p.m. 6.1 ppb (6) 1.3 ppb (2) N/A 5.0 ppb (5) N/A N/A 34.0 ppb (32) 0.23 ppb (3) N/A 4.0 μg/m3 (17) 32.0
 
July 27, 2021, 10 p.m. 4.8 ppb (5) 1.0 ppb (1) N/A 4.0 ppb (4) N/A N/A 37.0 ppb (35) 0.19 ppb (3) N/A 2.0 μg/m3 (9) 35.0
 
July 27, 2021, 9 p.m. 6.1 ppb (6) 1.5 ppb (2) N/A 5.0 ppb (5) N/A N/A 35.0 ppb (33) 0.18 ppb (3) N/A 1.0 μg/m3 (5) 33.0
 
July 27, 2021, 8 p.m. 4.6 ppb (5) 1.1 ppb (2) N/A 4.0 ppb (4) N/A N/A 35.0 ppb (33) 0.18 ppb (3) N/A 1.0 μg/m3 (5) 33.0
 
July 27, 2021, 7 p.m. 5.5 ppb (6) 1.6 ppb (2) N/A 4.0 ppb (4) N/A N/A 29.0 ppb (27) 0.2 ppb (3) N/A 2.0 μg/m3 (9) 27.0
 
July 27, 2021, 6 p.m. 12.2 ppb (12) 4.9 ppb (5) N/A 7.0 ppb (7) N/A N/A 21.0 ppb (20) 0.28 ppb (4) N/A 2.0 μg/m3 (9) 20.0
 
July 27, 2021, 5 p.m. 11.7 ppb (12) 4.0 ppb (4) N/A 8.0 ppb (8) N/A N/A 14.0 ppb (13) 0.28 ppb (4) N/A 4.0 μg/m3 (17) 17.0
 
July 27, 2021, 4 p.m. 7.8 ppb (8) 2.3 ppb (3) N/A 6.0 ppb (6) N/A N/A 15.0 ppb (14) 0.23 ppb (3) N/A 6.0 μg/m3 (25) 25.0
 
July 27, 2021, 3 p.m. 6.3 ppb (6) 1.6 ppb (2) N/A 5.0 ppb (5) N/A N/A 16.0 ppb (15) 0.22 ppb (3) N/A 4.0 μg/m3 (17) 17.0
 
July 27, 2021, 2 p.m. 10.3 ppb (10) 2.1 ppb (2) N/A 8.0 ppb (8) N/A N/A 11.0 ppb (11) 0.27 ppb (4) N/A 4.0 μg/m3 (17) 17.0
 
July 27, 2021, 1 p.m. 4.9 ppb (5) 0.4 ppb (1) N/A 5.0 ppb (5) N/A N/A 14.0 ppb (13) 0.2 ppb (3) N/A 3.0 μg/m3 (13) 13.0
 
July 27, 2021, noon 3.0 ppb (3) 0.1 ppb (1) N/A 3.0 ppb (3) N/A N/A 16.0 ppb (15) 0.17 ppb (3) N/A 2.0 μg/m3 (9) 15.0
 
July 27, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
July 27, 2021, 10 a.m. 1.5 ppb (2) 0.1 ppb (1) N/A 1.0 ppb (1) N/A N/A 17.0 ppb (16) 0.15 ppb (2) N/A 3.0 μg/m3 (13) 16.0
 
July 27, 2021, 9 a.m. 1.7 ppb (2) 0.1 ppb (1) N/A 2.0 ppb (2) N/A N/A 17.0 ppb (16) 0.14 ppb (2) N/A -1.0 μg/m3 (0) 16.0
 
July 27, 2021, 8 a.m. 1.1 ppb (2) 0.1 ppb (1) N/A 1.0 ppb (1) N/A N/A 20.0 ppb (19) 0.14 ppb (2) N/A 1.0 μg/m3 (5) 19.0
 
July 27, 2021, 7 a.m. 1.4 ppb (2) 0.2 ppb (1) N/A 1.0 ppb (1) N/A N/A 20.0 ppb (19) 0.13 ppb (2) N/A 3.0 μg/m3 (13) 19.0
 
July 27, 2021, 6 a.m. 1.9 ppb (2) 0.1 ppb (1) N/A 2.0 ppb (2) N/A N/A 19.0 ppb (18) 0.14 ppb (2) N/A 3.0 μg/m3 (13) 18.0
 
July 27, 2021, 5 a.m. 1.8 ppb (2) 0.1 ppb (1) N/A 2.0 ppb (2) N/A N/A 19.0 ppb (18) 0.14 ppb (2) N/A 3.0 μg/m3 (13) 18.0
 
July 27, 2021, 4 a.m. 1.7 ppb (2) 0.1 ppb (1) N/A 2.0 ppb (2) N/A N/A 21.0 ppb (20) 0.14 ppb (2) N/A 3.0 μg/m3 (13) 20.0
 
July 27, 2021, 3 a.m. 2.3 ppb (3) 0.1 ppb (1) N/A 2.0 ppb (2) N/A N/A 24.0 ppb (23) 0.15 ppb (2) N/A 2.0 μg/m3 (9) 23.0
 
July 27, 2021, 2 a.m. 3.0 ppb (3) 0.4 ppb (1) N/A 3.0 ppb (3) N/A N/A 32.0 ppb (30) 0.15 ppb (2) N/A 3.0 μg/m3 (13) 30.0