ID: 2716

AQSQID: 060731022

Site Name: El Cajon - Lexington Elementary School

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

Updated: July 28, 2021, 6:56 p.m.

Location: El Cajon (Bostonia), CA

Reporting: True, Located: True

Current AQI: 42.0

El Cajon (Bostonia) CA, US: 32.789561, -116.944222

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
July 28, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A N/A 8.3 μg/m3 (35) 42.0
 
July 28, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A N/A 8.7 μg/m3 (37) 37.0
 
July 28, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (20) N/A N/A 8.6 μg/m3 (36) 36.0
 
July 28, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (13) N/A N/A 1.8 μg/m3 (8) 13.0
 
July 28, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (12) N/A N/A 2.1 μg/m3 (9) 12.0
 
July 28, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A N/A 1.8 μg/m3 (8) 8.0
 
July 28, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 1.0 μg/m3 (5) 5.0
 
July 28, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 4.5 μg/m3 (19) 19.0
 
July 28, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (19) N/A N/A 5.0 μg/m3 (21) 21.0
 
July 28, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (19) N/A N/A 7.1 μg/m3 (30) 30.0
 
July 28, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (20) N/A N/A 7.8 μg/m3 (33) 33.0
 
July 28, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A N/A 6.6 μg/m3 (28) 28.0
 
July 28, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (25) N/A N/A 7.4 μg/m3 (31) 31.0
 
July 28, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) N/A N/A 8.4 μg/m3 (36) 36.0
 
July 28, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A N/A 7.5 μg/m3 (32) 38.0
 
July 28, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A N/A 5.4 μg/m3 (23) 41.0
 
July 28, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (47) N/A N/A 3.9 μg/m3 (17) 47.0
 
July 28, 2021, midnight N/A N/A N/A N/A N/A N/A 56.0 ppb (55) N/A N/A 6.8 μg/m3 (29) 55.0
 
July 27, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 61.0 ppb (71) N/A N/A 9.7 μg/m3 (41) 71.0
 
July 27, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 63.0 ppb (78) N/A N/A 7.9 μg/m3 (33) 78.0
 
July 27, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 61.0 ppb (71) N/A N/A 12.0 μg/m3 (50) 71.0
 
July 27, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (51) N/A N/A 11.4 μg/m3 (48) 51.0
 
July 27, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (47) N/A N/A 10.4 μg/m3 (44) 47.0
 
July 27, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A N/A 4.8 μg/m3 (20) 34.0
 
July 27, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (24) N/A N/A 7.3 μg/m3 (31) 31.0
 
July 27, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (16) N/A N/A 8.6 μg/m3 (36) 36.0
 
July 27, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (12) N/A N/A 10.0 μg/m3 (42) 42.0
 
July 27, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (12) N/A N/A 9.5 μg/m3 (40) 40.0
 
July 27, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (13) N/A N/A 9.7 μg/m3 (41) 41.0
 
July 27, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A N/A 9.1 μg/m3 (38) 38.0
 
July 27, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 8.3 μg/m3 (35) 35.0
 
July 27, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 6.4 μg/m3 (27) 27.0
 
July 27, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (16) N/A N/A 7.3 μg/m3 (31) 31.0
 
July 27, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (17) N/A N/A 9.7 μg/m3 (41) 41.0
 
July 27, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (18) N/A N/A 8.7 μg/m3 (37) 37.0
 
July 27, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (19) N/A N/A 7.7 μg/m3 (33) 33.0
 
July 27, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (18) N/A N/A 9.4 μg/m3 (40) 40.0
 
July 27, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (20) N/A N/A 9.3 μg/m3 (39) 39.0
 
July 27, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (24) N/A N/A 12.9 μg/m3 (53) 53.0
 
July 27, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A N/A 10.6 μg/m3 (45) 45.0
 
July 27, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A N/A 9.5 μg/m3 (40) 40.0
 
July 27, 2021, midnight N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A N/A 10.4 μg/m3 (44) 44.0
 
July 26, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A N/A 11.7 μg/m3 (49) 49.0
 
July 26, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A N/A 13.2 μg/m3 (54) 54.0
 
July 26, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (46) N/A N/A 11.3 μg/m3 (48) 48.0
 
July 26, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A N/A 10.8 μg/m3 (46) 46.0
 
July 26, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A N/A 14.3 μg/m3 (56) 56.0
 
July 26, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A N/A 7.6 μg/m3 (32) 32.0
 
July 26, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (20) N/A N/A 12.9 μg/m3 (53) 53.0
 
July 26, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (19) N/A N/A N/A 19.0
 
July 26, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (18) N/A N/A 11.6 μg/m3 (49) 49.0
 
July 26, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (16) N/A N/A 7.4 μg/m3 (31) 31.0
 
July 26, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (16) N/A N/A 8.7 μg/m3 (37) 37.0
 
July 26, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A N/A 6.9 μg/m3 (29) 29.0
 
July 26, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 10.7 μg/m3 (45) 45.0
 
July 26, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 11.5 μg/m3 (48) 48.0
 
July 26, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (20) N/A N/A 11.6 μg/m3 (49) 49.0
 
July 26, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (20) N/A N/A 11.0 μg/m3 (46) 46.0
 
July 26, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (23) N/A N/A 8.2 μg/m3 (35) 35.0
 
July 26, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (24) N/A N/A 8.8 μg/m3 (37) 37.0
 
July 26, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (25) N/A N/A 10.1 μg/m3 (43) 43.0
 
July 26, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A N/A 8.1 μg/m3 (34) 34.0
 
July 26, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A N/A 7.7 μg/m3 (33) 33.0
 
July 26, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A N/A 7.7 μg/m3 (33) 33.0
 
July 26, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A N/A 10.8 μg/m3 (46) 46.0
 
July 26, 2021, midnight N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A N/A 8.9 μg/m3 (38) 38.0
 
July 25, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A N/A 9.0 μg/m3 (38) 44.0
 
July 25, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A N/A 9.3 μg/m3 (39) 44.0
 
July 25, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (45) N/A N/A 13.6 μg/m3 (55) 55.0
 
July 25, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A N/A 8.1 μg/m3 (34) 44.0
 
July 25, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A N/A 13.9 μg/m3 (55) 55.0
 
July 25, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A N/A 14.4 μg/m3 (56) 56.0
 
July 25, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A N/A 10.5 μg/m3 (44) 44.0
 
July 25, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) N/A N/A 11.0 μg/m3 (46) 46.0
 
July 25, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A N/A 9.8 μg/m3 (41) 41.0
 
July 25, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (24) N/A N/A 9.6 μg/m3 (40) 40.0
 
July 25, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (21) N/A N/A 10.2 μg/m3 (43) 43.0
 
July 25, 2021, noon N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A N/A 10.0 μg/m3 (42) 42.0
 
July 25, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 12.0 μg/m3 (50) 50.0
 
July 25, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 12.9 μg/m3 (53) 53.0
 
July 25, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 8.1 μg/m3 (34) 34.0
 
July 25, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A N/A 10.5 μg/m3 (44) 44.0
 
July 25, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A N/A 8.2 μg/m3 (35) 35.0
 
July 25, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (23) N/A N/A 12.2 μg/m3 (52) 52.0
 
July 25, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A N/A 13.7 μg/m3 (55) 55.0
 
July 25, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A N/A 14.3 μg/m3 (56) 56.0
 
July 25, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A N/A 11.4 μg/m3 (48) 48.0
 
July 25, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A N/A 8.5 μg/m3 (36) 36.0
 
July 25, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A N/A 15.6 μg/m3 (59) 59.0
 
July 25, 2021, midnight N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A N/A 10.5 μg/m3 (44) 44.0
 
July 24, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A N/A 12.4 μg/m3 (52) 52.0
 
July 24, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (46) N/A N/A 17.5 μg/m3 (63) 63.0
 
July 24, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (48) N/A N/A 17.5 μg/m3 (63) 63.0
 
July 24, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (46) N/A N/A 16.5 μg/m3 (61) 61.0
 
July 24, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A N/A 13.9 μg/m3 (55) 55.0
 
July 24, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A N/A 16.9 μg/m3 (62) 62.0
 
July 24, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A N/A 17.4 μg/m3 (63) 63.0
 
July 24, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A N/A 16.9 μg/m3 (62) 62.0
 
July 24, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (20) N/A N/A 12.6 μg/m3 (53) 53.0
 
July 24, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (18) N/A N/A 14.9 μg/m3 (57) 57.0
 
July 24, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (15) N/A N/A 9.3 μg/m3 (39) 39.0
 
July 24, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A N/A 11.6 μg/m3 (49) 49.0
 
July 24, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 10.0 μg/m3 (42) 42.0
 
July 24, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 14.2 μg/m3 (56) 56.0
 
July 24, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (17) N/A N/A 10.7 μg/m3 (45) 45.0
 
July 24, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (19) N/A N/A 11.6 μg/m3 (49) 49.0
 
July 24, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (19) N/A N/A 11.2 μg/m3 (47) 47.0
 
July 24, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (20) N/A N/A 10.8 μg/m3 (46) 46.0
 
July 24, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (19) N/A N/A 14.4 μg/m3 (56) 56.0
 
July 24, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (21) N/A N/A 13.4 μg/m3 (54) 54.0
 
July 24, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A N/A 11.6 μg/m3 (49) 49.0
 
July 24, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A N/A 12.5 μg/m3 (52) 52.0
 
July 24, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A N/A 14.7 μg/m3 (57) 57.0
 
July 24, 2021, midnight N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A N/A 10.0 μg/m3 (42) 42.0
 
July 23, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A N/A 15.6 μg/m3 (59) 59.0
 
July 23, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A N/A 17.1 μg/m3 (62) 62.0
 
July 23, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 18.5 μg/m3 (65) 65.0
 
July 23, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 24.1 μg/m3 (77) 77.0
 
July 23, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 22.9 μg/m3 (74) 74.0
 
July 23, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 23.9 μg/m3 (76) 76.0
 
July 23, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A N/A 27.7 μg/m3 (84) 84.0
 
July 23, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (23) N/A N/A 24.0 μg/m3 (77) 77.0
 
July 23, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (16) N/A N/A 18.8 μg/m3 (66) 66.0
 
July 23, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (15) N/A N/A 15.7 μg/m3 (59) 59.0
 
July 23, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (12) N/A N/A 6.5 μg/m3 (28) 28.0
 
July 23, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A N/A 7.2 μg/m3 (31) 31.0
 
July 23, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 8.2 μg/m3 (35) 35.0
 
July 23, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 13.4 μg/m3 (54) 54.0
 
July 23, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (18) N/A N/A 14.8 μg/m3 (57) 57.0
 
July 23, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (18) N/A N/A 15.1 μg/m3 (58) 58.0
 
July 23, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (19) N/A N/A 11.9 μg/m3 (50) 50.0
 
July 23, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (18) N/A N/A 15.8 μg/m3 (59) 59.0
 
July 23, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (18) N/A N/A 15.2 μg/m3 (58) 58.0
 
July 23, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (20) N/A N/A 15.0 μg/m3 (58) 58.0
 
July 23, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (21) N/A N/A 12.5 μg/m3 (52) 52.0
 
July 23, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A N/A 15.2 μg/m3 (58) 58.0
 
July 23, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) N/A N/A 18.9 μg/m3 (66) 66.0
 
July 23, 2021, midnight N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A N/A 16.8 μg/m3 (61) 61.0
 
July 22, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A N/A 13.0 μg/m3 (53) 53.0
 
July 22, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A N/A 18.8 μg/m3 (66) 66.0
 
July 22, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A N/A 15.5 μg/m3 (59) 59.0
 
July 22, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A N/A 16.1 μg/m3 (60) 60.0
 
July 22, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A N/A 16.9 μg/m3 (62) 62.0
 
July 22, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A N/A 19.8 μg/m3 (68) 68.0
 
July 22, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 20.0 μg/m3 (68) 68.0
 
July 22, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (24) N/A N/A 18.3 μg/m3 (65) 65.0
 
July 22, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (17) N/A N/A 18.6 μg/m3 (65) 65.0
 
July 22, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (16) N/A N/A 17.3 μg/m3 (62) 62.0
 
July 22, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (13) N/A N/A 6.3 μg/m3 (27) 27.0
 
July 22, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A N/A 9.2 μg/m3 (39) 39.0
 
July 22, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 14.5 μg/m3 (57) 57.0
 
July 22, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 9.0 μg/m3 (38) 38.0
 
July 22, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (16) N/A N/A 7.4 μg/m3 (31) 31.0
 
July 22, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (16) N/A N/A 10.2 μg/m3 (43) 43.0
 
July 22, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (18) N/A N/A 14.6 μg/m3 (57) 57.0
 
July 22, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (19) N/A N/A 9.6 μg/m3 (40) 40.0
 
July 22, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (21) N/A N/A 18.8 μg/m3 (66) 66.0
 
July 22, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A N/A 14.0 μg/m3 (55) 55.0
 
July 22, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (24) N/A N/A 13.2 μg/m3 (54) 54.0
 
July 22, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (24) N/A N/A 12.0 μg/m3 (50) 50.0
 
July 22, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (25) N/A N/A 16.7 μg/m3 (61) 61.0
 
July 22, 2021, midnight N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A N/A 9.8 μg/m3 (41) 41.0
 
July 21, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A N/A 7.7 μg/m3 (33) 36.0
 
July 21, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A N/A 8.6 μg/m3 (36) 38.0
 
July 21, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 7.0 μg/m3 (30) 30.0
 
July 21, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 8.4 μg/m3 (36) 36.0
 
July 21, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 16.5 μg/m3 (61) 61.0
 
July 21, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 9.5 μg/m3 (40) 40.0