ID: 5320

AQSQID: 000102503

Site Name: Terrace Skeena Middle School

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

Updated: May 28, 2022, 1:28 p.m.

Location: Terrace (Munroe St), CC

Reporting: False, Located: True

Current AQI: None

Terrace (Munroe St) CC, CA: 54.5217, -128.6075

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
May 25, 2022, 8 p.m. N/A 0.2 ppb (1) N/A N/A N/A 1.0 ppb (2) 28.0 ppb (26) N/A N/A N/A 26.0
 
May 25, 2022, 8 p.m. N/A 0.2 ppb (1) N/A N/A N/A 1.0 ppb (2) 28.0 ppb (26) N/A N/A N/A 26.0
 
May 25, 2022, 8 p.m. N/A 0.2 ppb (1) N/A N/A N/A 1.0 ppb (2) 28.0 ppb (26) N/A N/A N/A 26.0
 
May 25, 2022, 7 p.m. N/A 0.2 ppb (1) N/A N/A N/A 1.0 ppb (2) 29.0 ppb (27) N/A N/A N/A 27.0
 
May 25, 2022, 7 p.m. N/A 0.2 ppb (1) N/A N/A N/A 1.0 ppb (2) 29.0 ppb (27) N/A N/A N/A 27.0
 
May 25, 2022, 6 p.m. N/A 0.0 ppb (0) N/A N/A N/A 1.0 ppb (2) 28.0 ppb (26) N/A N/A N/A 26.0
 
May 25, 2022, 6 p.m. N/A 0.0 ppb (0) N/A N/A N/A 1.0 ppb (2) 28.0 ppb (26) N/A N/A N/A 26.0
 
May 25, 2022, 5 p.m. N/A 0.1 ppb (1) N/A N/A N/A 1.0 ppb (2) 29.0 ppb (27) N/A N/A N/A 27.0
 
May 25, 2022, 5 p.m. N/A 0.1 ppb (1) N/A N/A N/A 1.0 ppb (2) 29.0 ppb (27) N/A N/A N/A 27.0
 
May 25, 2022, 4 p.m. N/A 0.3 ppb (1) N/A N/A N/A 1.0 ppb (2) 25.0 ppb (24) N/A N/A N/A 24.0
 
May 25, 2022, 3 p.m. N/A 0.9 ppb (1) N/A N/A N/A 1.0 ppb (2) 18.0 ppb (17) N/A N/A N/A 17.0
 
May 25, 2022, 1 p.m. N/A 0.2 ppb (1) N/A N/A N/A 1.0 ppb (2) 13.0 ppb (13) N/A N/A N/A 13.0
 
May 25, 2022, 11 a.m. N/A 0.1 ppb (1) N/A N/A N/A 1.0 ppb (2) 11.0 ppb (11) N/A N/A N/A 11.0
 
May 25, 2022, 11 a.m. N/A 0.1 ppb (1) N/A N/A N/A 1.0 ppb (2) 11.0 ppb (11) N/A N/A N/A 11.0
 
May 25, 2022, 11 a.m. N/A 0.1 ppb (1) N/A N/A N/A 1.0 ppb (2) 11.0 ppb (11) N/A N/A N/A 11.0
 
May 25, 2022, 11 a.m. N/A 0.1 ppb (1) N/A N/A N/A 1.0 ppb (2) 11.0 ppb (11) N/A N/A N/A 11.0
 
May 25, 2022, 11 a.m. N/A 0.1 ppb (1) N/A N/A N/A 1.0 ppb (2) 11.0 ppb (11) N/A N/A N/A 11.0
 
May 25, 2022, 11 a.m. N/A 0.1 ppb (1) N/A N/A N/A 1.0 ppb (2) 11.0 ppb (11) N/A N/A N/A 11.0
 
May 25, 2022, 9 a.m. N/A -0.1 ppb (0) N/A N/A N/A 1.0 ppb (2) 18.0 ppb (17) N/A N/A N/A 17.0
 
May 25, 2022, 5 a.m. N/A -0.1 ppb (0) N/A N/A N/A 1.0 ppb (2) 26.0 ppb (25) N/A N/A N/A 25.0
 
May 25, 2022, 4 a.m. N/A -0.1 ppb (0) N/A N/A N/A 1.0 ppb (2) 29.0 ppb (27) N/A N/A N/A 27.0
 
May 25, 2022, 1 a.m. N/A 0.2 ppb (1) N/A N/A N/A 1.0 ppb (2) 36.0 ppb (34) N/A N/A N/A 34.0
 
May 25, 2022, midnight N/A 0.3 ppb (1) N/A N/A N/A 1.0 ppb (2) 37.0 ppb (35) N/A N/A N/A 35.0
 
May 24, 2022, 9 p.m. N/A 0.2 ppb (1) N/A N/A N/A 1.0 ppb (2) 36.0 ppb (34) N/A N/A N/A 34.0
 
May 24, 2022, 8 p.m. N/A 0.2 ppb (1) N/A N/A N/A 1.0 ppb (2) 36.0 ppb (34) N/A N/A N/A 34.0
 
May 24, 2022, 7 p.m. N/A 0.2 ppb (1) N/A N/A N/A 1.0 ppb (2) 36.0 ppb (34) N/A N/A N/A 34.0
 
May 24, 2022, 6 p.m. N/A 0.2 ppb (1) N/A N/A N/A 1.0 ppb (2) 36.0 ppb (34) N/A N/A N/A 34.0
 
May 24, 2022, 5 p.m. N/A 0.7 ppb (1) N/A N/A N/A 1.0 ppb (2) 32.0 ppb (30) N/A N/A N/A 30.0
 
May 24, 2022, 3 p.m. N/A 1.9 ppb (2) N/A N/A N/A 1.0 ppb (2) 20.0 ppb (19) N/A N/A 1.0 μg/m3 (5) 19.0
 
May 24, 2022, 3 p.m. N/A 1.9 ppb (2) N/A N/A N/A 1.0 ppb (2) 20.0 ppb (19) N/A N/A 1.0 μg/m3 (5) 19.0
 
May 24, 2022, 2 p.m. N/A 0.9 ppb (1) N/A N/A N/A 1.0 ppb (2) 16.0 ppb (15) N/A N/A 0.8 μg/m3 (4) 15.0
 
May 24, 2022, 1 p.m. N/A 0.1 ppb (1) N/A N/A N/A 0.0 ppb (0) 16.0 ppb (15) N/A N/A 0.9 μg/m3 (4) 15.0
 
May 24, 2022, noon N/A 0.0 ppb (0) N/A N/A N/A 1.0 ppb (2) 22.0 ppb (21) N/A N/A 1.0 μg/m3 (5) 21.0
 
May 24, 2022, 10 a.m. N/A -0.1 ppb (0) N/A N/A N/A 1.0 ppb (2) 27.0 ppb (25) N/A N/A 1.1 μg/m3 (5) 25.0
 
May 24, 2022, 9 a.m. N/A -0.1 ppb (0) N/A N/A N/A 0.0 ppb (0) 29.0 ppb (27) N/A N/A 1.3 μg/m3 (6) 27.0
 
May 24, 2022, 8 a.m. N/A -0.1 ppb (0) N/A N/A N/A 1.0 ppb (2) 28.0 ppb (26) N/A N/A 1.6 μg/m3 (7) 26.0
 
May 24, 2022, 6 a.m. N/A 0.0 ppb (0) N/A N/A N/A 0.0 ppb (0) 31.0 ppb (29) N/A N/A 5.1 μg/m3 (22) 29.0
 
May 24, 2022, 5 a.m. N/A -0.1 ppb (0) N/A N/A N/A 0.0 ppb (0) 31.0 ppb (29) N/A N/A 8.6 μg/m3 (36) 36.0
 
May 24, 2022, 5 a.m. N/A -0.1 ppb (0) N/A N/A N/A 0.0 ppb (0) 31.0 ppb (29) N/A N/A 8.6 μg/m3 (36) 36.0
 
May 24, 2022, 4 a.m. N/A -0.1 ppb (0) N/A N/A N/A 1.0 ppb (2) 31.0 ppb (29) N/A N/A 12.5 μg/m3 (52) 52.0
 
May 24, 2022, 4 a.m. N/A -0.1 ppb (0) N/A N/A N/A 1.0 ppb (2) 31.0 ppb (29) N/A N/A 12.5 μg/m3 (52) 52.0
 
May 24, 2022, 3 a.m. N/A 0.0 ppb (0) N/A N/A N/A 0.0 ppb (0) 38.0 ppb (36) N/A N/A 14.4 μg/m3 (56) 56.0
 
May 24, 2022, 3 a.m. N/A 0.0 ppb (0) N/A N/A N/A 0.0 ppb (0) 38.0 ppb (36) N/A N/A 14.4 μg/m3 (56) 56.0
 
May 24, 2022, 2 a.m. N/A 0.0 ppb (0) N/A N/A N/A 0.0 ppb (0) 39.0 ppb (37) N/A N/A 14.9 μg/m3 (57) 57.0
 
May 24, 2022, 2 a.m. N/A 0.0 ppb (0) N/A N/A N/A 0.0 ppb (0) 39.0 ppb (37) N/A N/A 14.9 μg/m3 (57) 57.0
 
May 24, 2022, 1 a.m. N/A 0.0 ppb (0) N/A N/A N/A 0.0 ppb (0) 41.0 ppb (38) N/A N/A 13.7 μg/m3 (55) 55.0
 
May 24, 2022, 1 a.m. N/A 0.0 ppb (0) N/A N/A N/A 0.0 ppb (0) 41.0 ppb (38) N/A N/A 13.7 μg/m3 (55) 55.0
 
May 24, 2022, midnight N/A 0.0 ppb (0) N/A N/A N/A 1.0 ppb (2) 40.0 ppb (38) N/A N/A 10.6 μg/m3 (45) 45.0
 
May 24, 2022, midnight N/A 0.0 ppb (0) N/A N/A N/A 1.0 ppb (2) 40.0 ppb (38) N/A N/A 10.6 μg/m3 (45) 45.0
 
May 23, 2022, 11 p.m. N/A 0.1 ppb (1) N/A N/A N/A 1.0 ppb (2) 37.0 ppb (35) N/A N/A 6.3 μg/m3 (27) 35.0
 
May 23, 2022, 11 p.m. N/A 0.1 ppb (1) N/A N/A N/A 1.0 ppb (2) 37.0 ppb (35) N/A N/A 6.3 μg/m3 (27) 35.0
 
May 23, 2022, 8 p.m. N/A 0.0 ppb (0) N/A N/A N/A 1.0 ppb (2) 32.0 ppb (30) N/A N/A 1.1 μg/m3 (5) 30.0
 
May 23, 2022, 7 p.m. N/A 0.2 ppb (1) N/A N/A N/A 1.0 ppb (2) 32.0 ppb (30) N/A N/A 0.9 μg/m3 (4) 30.0
 
May 23, 2022, 6 p.m. N/A 0.1 ppb (1) N/A N/A N/A 1.0 ppb (2) 32.0 ppb (30) N/A N/A 0.8 μg/m3 (4) 30.0
 
May 23, 2022, 3 p.m. N/A 0.0 ppb (0) N/A N/A N/A 1.0 ppb (2) 30.0 ppb (28) N/A N/A 0.7 μg/m3 (3) 28.0
 
May 23, 2022, 2 p.m. N/A 0.1 ppb (1) N/A N/A N/A 1.0 ppb (2) 30.0 ppb (28) N/A N/A 0.7 μg/m3 (3) 28.0
 
May 23, 2022, 11 a.m. N/A -0.1 ppb (0) N/A N/A N/A 1.0 ppb (2) 32.0 ppb (30) N/A N/A 1.0 μg/m3 (5) 30.0
 
May 23, 2022, 10 a.m. N/A -0.2 ppb (0) N/A N/A N/A 0.0 ppb (0) 32.0 ppb (30) N/A N/A 1.1 μg/m3 (5) 30.0
 
May 23, 2022, 10 a.m. N/A -0.2 ppb (0) N/A N/A N/A 0.0 ppb (0) 32.0 ppb (30) N/A N/A 1.1 μg/m3 (5) 30.0
 
May 23, 2022, 9 a.m. N/A -0.2 ppb (0) N/A N/A N/A 0.0 ppb (0) 32.0 ppb (30) N/A N/A 1.8 μg/m3 (8) 30.0
 
May 23, 2022, 3 a.m. N/A -0.1 ppb (0) N/A N/A N/A 0.0 ppb (0) 33.0 ppb (31) N/A N/A 26.2 μg/m3 (81) 81.0
 
May 23, 2022, 2 a.m. N/A 0.0 ppb (0) N/A N/A N/A 0.0 ppb (0) 38.0 ppb (36) N/A N/A 29.4 μg/m3 (88) 88.0
 
May 23, 2022, 1 a.m. N/A -0.1 ppb (0) N/A N/A N/A 0.0 ppb (0) 39.0 ppb (37) N/A N/A 31.7 μg/m3 (93) 93.0
 
May 23, 2022, midnight N/A 0.1 ppb (1) N/A N/A N/A 0.0 ppb (0) 40.0 ppb (38) N/A N/A 31.5 μg/m3 (92) 92.0
 
May 22, 2022, 11 p.m. N/A 0.1 ppb (1) N/A N/A N/A 1.0 ppb (2) 41.0 ppb (38) N/A N/A 26.9 μg/m3 (83) 83.0
 
May 22, 2022, 9 p.m. N/A 0.0 ppb (0) N/A N/A N/A 1.0 ppb (2) 40.0 ppb (38) N/A N/A 12.4 μg/m3 (52) 52.0
 
May 22, 2022, 8 p.m. N/A -0.1 ppb (0) N/A N/A N/A 1.0 ppb (2) 36.0 ppb (34) N/A N/A 5.2 μg/m3 (22) 34.0
 
May 22, 2022, 7 p.m. N/A 0.0 ppb (0) N/A N/A N/A 1.0 ppb (2) 33.0 ppb (31) N/A N/A 1.7 μg/m3 (8) 31.0
 
May 22, 2022, 6 p.m. N/A 0.1 ppb (1) N/A N/A N/A 1.0 ppb (2) 31.0 ppb (29) N/A N/A 1.4 μg/m3 (6) 29.0
 
May 22, 2022, 5 p.m. N/A 0.2 ppb (1) N/A N/A N/A 1.0 ppb (2) 30.0 ppb (28) N/A N/A 1.0 μg/m3 (5) 28.0
 
May 22, 2022, 4 p.m. N/A 0.6 ppb (1) N/A N/A N/A 1.0 ppb (2) 24.0 ppb (23) N/A N/A 0.9 μg/m3 (4) 23.0
 
May 22, 2022, 3 p.m. N/A 0.9 ppb (1) N/A N/A N/A 1.0 ppb (2) 18.0 ppb (17) N/A N/A 1.0 μg/m3 (5) 17.0
 
May 22, 2022, 2 p.m. N/A 1.3 ppb (2) N/A N/A N/A 0.0 ppb (0) 12.0 ppb (12) N/A N/A 1.0 μg/m3 (5) 12.0
 
May 22, 2022, 1 p.m. N/A 0.7 ppb (1) N/A N/A N/A 0.0 ppb (0) 7.0 ppb (7) N/A N/A 0.9 μg/m3 (4) 7.0
 
May 22, 2022, 1 p.m. N/A 0.7 ppb (1) N/A N/A N/A 0.0 ppb (0) 7.0 ppb (7) N/A N/A 0.9 μg/m3 (4) 7.0
 
May 22, 2022, noon N/A 0.2 ppb (1) N/A N/A N/A 0.0 ppb (0) 7.0 ppb (7) N/A N/A 1.0 μg/m3 (5) 7.0
 
May 22, 2022, 11 a.m. N/A -0.1 ppb (0) N/A N/A N/A 0.0 ppb (0) 9.0 ppb (9) N/A N/A 1.2 μg/m3 (5) 9.0
 
May 22, 2022, 10 a.m. N/A 0.0 ppb (0) N/A N/A N/A 0.0 ppb (0) 12.0 ppb (12) N/A N/A 2.5 μg/m3 (11) 12.0
 
May 22, 2022, 9 a.m. N/A -0.2 ppb (0) N/A N/A N/A 0.0 ppb (0) 15.0 ppb (14) N/A N/A 6.0 μg/m3 (25) 25.0
 
May 22, 2022, 8 a.m. N/A -0.2 ppb (0) N/A N/A N/A 0.0 ppb (0) 15.0 ppb (14) N/A N/A 11.0 μg/m3 (46) 46.0
 
May 22, 2022, 7 a.m. N/A -0.2 ppb (0) N/A N/A N/A 0.0 ppb (0) 18.0 ppb (17) N/A N/A 19.0 μg/m3 (66) 66.0
 
May 22, 2022, 5 a.m. N/A -0.1 ppb (0) N/A N/A N/A 0.0 ppb (0) 29.0 ppb (27) N/A N/A 37.2 μg/m3 (106) 106.0
 
May 22, 2022, 3 a.m. N/A 0.0 ppb (0) N/A N/A N/A 0.0 ppb (0) 39.0 ppb (37) N/A N/A 45.2 μg/m3 (125) 125.0
 
May 22, 2022, 2 a.m. N/A 0.2 ppb (1) N/A N/A N/A 0.0 ppb (0) 40.0 ppb (38) N/A N/A 47.2 μg/m3 (130) 130.0
 
May 22, 2022, 1 a.m. N/A -0.1 ppb (0) N/A N/A N/A 0.0 ppb (0) 41.0 ppb (38) N/A N/A 47.8 μg/m3 (132) 132.0
 
May 22, 2022, midnight N/A 0.2 ppb (1) N/A N/A N/A 0.0 ppb (0) 43.0 ppb (40) N/A N/A 46.1 μg/m3 (128) 128.0
 
May 21, 2022, 11 p.m. N/A 0.1 ppb (1) N/A N/A N/A 0.0 ppb (0) 43.0 ppb (40) N/A N/A 41.8 μg/m3 (117) 117.0
 
May 21, 2022, 10 p.m. N/A 0.1 ppb (1) N/A N/A N/A 1.0 ppb (2) 43.0 ppb (40) N/A N/A 34.7 μg/m3 (99) 99.0
 
May 21, 2022, 9 p.m. N/A -0.1 ppb (0) N/A N/A N/A 1.0 ppb (2) 44.0 ppb (41) N/A N/A 25.0 μg/m3 (79) 79.0
 
May 21, 2022, 8 p.m. N/A 0.2 ppb (1) N/A N/A N/A 1.0 ppb (2) 40.0 ppb (38) N/A N/A 15.5 μg/m3 (59) 59.0
 
May 21, 2022, 7 p.m. N/A 0.2 ppb (1) N/A N/A N/A 1.0 ppb (2) 32.0 ppb (30) N/A N/A 7.6 μg/m3 (32) 32.0
 
May 21, 2022, 6 p.m. N/A 0.2 ppb (1) N/A N/A N/A 1.0 ppb (2) 30.0 ppb (28) N/A N/A 2.9 μg/m3 (13) 28.0
 
May 21, 2022, 5 p.m. N/A 0.4 ppb (1) N/A N/A N/A 1.0 ppb (2) 28.0 ppb (26) N/A N/A 1.3 μg/m3 (6) 26.0
 
May 21, 2022, 4 p.m. N/A 0.4 ppb (1) N/A N/A N/A 1.0 ppb (2) 26.0 ppb (25) N/A N/A 0.9 μg/m3 (4) 25.0
 
May 21, 2022, 3 p.m. N/A 0.1 ppb (1) N/A N/A N/A 0.0 ppb (0) 24.0 ppb (23) N/A N/A 0.8 μg/m3 (4) 23.0
 
May 21, 2022, 2 p.m. N/A 0.1 ppb (1) N/A N/A N/A 0.0 ppb (0) 20.0 ppb (19) N/A N/A 0.8 μg/m3 (4) 19.0
 
May 21, 2022, 1 p.m. N/A 0.2 ppb (1) N/A N/A N/A 0.0 ppb (0) 15.0 ppb (14) N/A N/A 1.9 μg/m3 (8) 14.0
 
May 21, 2022, 1 p.m. N/A 0.2 ppb (1) N/A N/A N/A 0.0 ppb (0) 15.0 ppb (14) N/A N/A 1.9 μg/m3 (8) 14.0
 
May 21, 2022, noon N/A 0.2 ppb (1) N/A N/A N/A 0.0 ppb (0) 10.0 ppb (10) N/A N/A 3.8 μg/m3 (16) 16.0
 
May 21, 2022, 10 a.m. N/A -0.1 ppb (0) N/A N/A N/A 0.0 ppb (0) 13.0 ppb (13) N/A N/A 10.9 μg/m3 (46) 46.0
 
May 21, 2022, 9 a.m. N/A 0.1 ppb (1) N/A N/A N/A 0.0 ppb (0) 14.0 ppb (13) N/A N/A 17.3 μg/m3 (62) 62.0
 
May 21, 2022, 8 a.m. N/A 0.0 ppb (0) N/A N/A N/A 0.0 ppb (0) 22.0 ppb (21) N/A N/A 25.6 μg/m3 (80) 80.0
 
May 21, 2022, 4 a.m. N/A 0.0 ppb (0) N/A N/A N/A 0.0 ppb (0) 34.0 ppb (32) N/A N/A 69.4 μg/m3 (159) 159.0
 
May 21, 2022, 3 a.m. N/A 0.2 ppb (1) N/A N/A N/A 1.0 ppb (2) 36.0 ppb (34) N/A N/A 80.3 μg/m3 (164) 164.0
 
May 21, 2022, 2 a.m. N/A 0.2 ppb (1) N/A N/A N/A 1.0 ppb (2) 38.0 ppb (36) N/A N/A 78.0 μg/m3 (163) 163.0
 
May 21, 2022, 1 a.m. N/A 0.0 ppb (0) N/A N/A N/A 1.0 ppb (2) 38.0 ppb (36) N/A N/A 67.9 μg/m3 (158) 158.0
 
May 21, 2022, midnight N/A 0.3 ppb (1) N/A N/A N/A 1.0 ppb (2) 37.0 ppb (35) N/A N/A 60.9 μg/m3 (154) 154.0
 
May 20, 2022, 11 p.m. N/A 0.1 ppb (1) N/A N/A N/A 1.0 ppb (2) 37.0 ppb (35) N/A N/A 37.6 μg/m3 (107) 107.0
 
May 20, 2022, 10 p.m. N/A 0.1 ppb (1) N/A N/A N/A 1.0 ppb (2) 38.0 ppb (36) N/A N/A 16.9 μg/m3 (62) 62.0
 
May 20, 2022, 9 p.m. N/A 0.2 ppb (1) N/A -1.0 ppb (0) N/A 1.0 ppb (2) 37.0 ppb (35) N/A N/A 5.8 μg/m3 (25) 35.0
 
May 20, 2022, 7 p.m. N/A 0.5 ppb (1) N/A -1.0 ppb (0) N/A 1.0 ppb (2) 28.0 ppb (26) N/A N/A 3.3 μg/m3 (14) 26.0
 
May 20, 2022, 6 p.m. N/A 0.2 ppb (1) N/A N/A N/A 1.0 ppb (2) 23.0 ppb (22) N/A N/A 2.3 μg/m3 (10) 22.0
 
May 20, 2022, 5 p.m. N/A 0.3 ppb (1) N/A N/A N/A 0.0 ppb (0) 19.0 ppb (18) N/A N/A 2.6 μg/m3 (11) 18.0
 
May 20, 2022, 4 p.m. N/A 0.3 ppb (1) N/A N/A N/A 0.0 ppb (0) 16.0 ppb (15) N/A N/A 1.8 μg/m3 (8) 15.0
 
May 20, 2022, 3 p.m. N/A 0.6 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 10.0 ppb (10) N/A N/A 2.1 μg/m3 (9) 10.0
 
May 20, 2022, 2 p.m. N/A 3.5 ppb (4) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 6.0 ppb (6) N/A N/A 4.6 μg/m3 (20) 20.0
 
May 20, 2022, 1 p.m. N/A 5.0 ppb (5) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 1.0 ppb (1) N/A N/A 5.3 μg/m3 (23) 23.0
 
May 20, 2022, 11 a.m. N/A 0.8 ppb (1) N/A 1.0 ppb (1) N/A 0.0 ppb (0) 1.0 ppb (1) N/A N/A 5.7 μg/m3 (24) 24.0
 
May 20, 2022, 10 a.m. N/A 0.5 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 2.0 ppb (2) N/A N/A 8.9 μg/m3 (38) 38.0
 
May 20, 2022, 9 a.m. N/A 0.2 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 3.0 ppb (3) N/A N/A 9.5 μg/m3 (40) 40.0
 
May 20, 2022, 8 a.m. N/A 0.1 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 5.0 ppb (5) N/A N/A 6.8 μg/m3 (29) 29.0
 
May 20, 2022, 7 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
 
May 20, 2022, 6 a.m. N/A 0.1 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 12.0 ppb (12) N/A N/A 4.6 μg/m3 (20) 20.0
 
May 20, 2022, 5 a.m. N/A 0.2 ppb (1) N/A 2.0 ppb (2) N/A 1.0 ppb (2) 18.0 ppb (17) N/A N/A 5.6 μg/m3 (24) 24.0
 
May 20, 2022, 4 a.m. N/A 0.2 ppb (1) N/A -1.0 ppb (0) N/A 1.0 ppb (2) 27.0 ppb (25) N/A N/A 4.0 μg/m3 (17) 25.0
 
May 20, 2022, 3 a.m. N/A 0.4 ppb (1) N/A -1.0 ppb (0) N/A 1.0 ppb (2) 29.0 ppb (27) N/A N/A 2.9 μg/m3 (13) 27.0
 
May 20, 2022, 2 a.m. N/A 0.0 ppb (0) N/A N/A N/A 1.0 ppb (2) 30.0 ppb (28) N/A N/A 3.2 μg/m3 (14) 28.0
 
May 20, 2022, 1 a.m. N/A 0.0 ppb (0) N/A N/A N/A 0.0 ppb (0) 30.0 ppb (28) N/A N/A 3.4 μg/m3 (15) 28.0
 
May 20, 2022, 1 a.m. N/A 0.0 ppb (0) N/A N/A N/A 0.0 ppb (0) 30.0 ppb (28) N/A N/A 3.4 μg/m3 (15) 28.0
 
May 20, 2022, midnight N/A 0.1 ppb (1) N/A N/A N/A 0.0 ppb (0) 30.0 ppb (28) N/A N/A 3.0 μg/m3 (13) 28.0
 
May 20, 2022, midnight N/A 0.1 ppb (1) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 30.0 ppb (28) N/A N/A 3.0 μg/m3 (13) 28.0
 
May 19, 2022, 11 p.m. N/A 0.1 ppb (1) N/A 0.0 ppb (0) N/A 1.0 ppb (2) 30.0 ppb (28) N/A N/A 1.9 μg/m3 (8) 28.0
 
May 19, 2022, 10 p.m. N/A 0.3 ppb (1) N/A 0.0 ppb (0) N/A 1.0 ppb (2) 29.0 ppb (27) N/A N/A 1.8 μg/m3 (8) 27.0
 
May 19, 2022, 9 p.m. N/A 0.3 ppb (1) N/A N/A N/A 1.0 ppb (2) 29.0 ppb (27) N/A N/A 1.8 μg/m3 (8) 27.0
 
May 19, 2022, 8 p.m. N/A 0.3 ppb (1) N/A 0.0 ppb (0) N/A 0.0 ppb (0) 29.0 ppb (27) N/A N/A 1.7 μg/m3 (8) 27.0
 
May 19, 2022, 7 p.m. N/A 0.1 ppb (1) N/A 0.0 ppb (0) N/A 1.0 ppb (2) 29.0 ppb (27) N/A N/A 1.6 μg/m3 (7) 27.0
 
May 19, 2022, 7 p.m. N/A 0.1 ppb (1) N/A 0.0 ppb (0) N/A 1.0 ppb (2) 29.0 ppb (27) N/A N/A 1.6 μg/m3 (7) 27.0
 
May 19, 2022, 4 p.m. N/A 0.2 ppb (1) N/A 0.0 ppb (0) N/A 1.0 ppb (2) 28.0 ppb (26) N/A N/A 2.7 μg/m3 (12) 26.0
 
May 19, 2022, 2 p.m. N/A 0.2 ppb (1) N/A 1.0 ppb (1) N/A 1.0 ppb (2) 28.0 ppb (26) N/A N/A 1.9 μg/m3 (8) 26.0
 
May 19, 2022, 6 a.m. N/A 0.1 ppb (1) N/A -1.0 ppb (0) N/A 1.0 ppb (2) 28.0 ppb (26) N/A N/A 1.9 μg/m3 (8) 26.0
 
May 19, 2022, 5 a.m. N/A 0.1 ppb (1) N/A -1.0 ppb (0) N/A 1.0 ppb (2) 28.0 ppb (26) N/A N/A 2.0 μg/m3 (9) 26.0
 
May 19, 2022, 4 a.m. N/A 0.0 ppb (0) N/A -1.0 ppb (0) N/A 1.0 ppb (2) 28.0 ppb (26) N/A N/A 2.1 μg/m3 (9) 26.0
 
May 19, 2022, 3 a.m. N/A 0.0 ppb (0) N/A -1.0 ppb (0) N/A 1.0 ppb (2) 27.0 ppb (25) N/A N/A 1.4 μg/m3 (6) 25.0
 
May 19, 2022, 2 a.m. N/A 0.3 ppb (1) N/A 0.0 ppb (0) N/A 1.0 ppb (2) 28.0 ppb (26) N/A N/A 1.7 μg/m3 (8) 26.0
 
May 19, 2022, 1 a.m. N/A 0.4 ppb (1) N/A 0.0 ppb (0) N/A 1.0 ppb (2) 26.0 ppb (25) N/A N/A 2.5 μg/m3 (11) 25.0
 
May 18, 2022, 11 p.m. N/A 0.4 ppb (1) N/A 0.0 ppb (0) N/A 1.0 ppb (2) 30.0 ppb (28) N/A N/A 2.1 μg/m3 (9) 28.0
 
May 18, 2022, 10 p.m. N/A 0.4 ppb (1) N/A 0.0 ppb (0) N/A 1.0 ppb (2) 30.0 ppb (28) N/A N/A 2.7 μg/m3 (12) 28.0
 
May 18, 2022, 9 p.m. N/A 0.1 ppb (1) N/A -1.0 ppb (0) N/A 1.0 ppb (2) 34.0 ppb (32) N/A N/A 2.7 μg/m3 (12) 32.0
 
May 18, 2022, 8 p.m. N/A 0.2 ppb (1) N/A N/A N/A 1.0 ppb (2) 33.0 ppb (31) N/A N/A 2.4 μg/m3 (10) 31.0
 
May 18, 2022, 7 p.m. N/A 0.1 ppb (1) N/A N/A N/A 1.0 ppb (2) 33.0 ppb (31) N/A N/A 2.5 μg/m3 (11) 31.0
 
May 18, 2022, 5 p.m. N/A 0.5 ppb (1) N/A 0.0 ppb (0) N/A 1.0 ppb (2) 30.0 ppb (28) N/A N/A 1.8 μg/m3 (8) 28.0
 
May 18, 2022, 4 p.m. N/A 0.1 ppb (1) N/A N/A N/A 1.0 ppb (2) 29.0 ppb (27) N/A N/A 1.5 μg/m3 (7) 27.0
 
May 18, 2022, 4 p.m. N/A 0.1 ppb (1) N/A 0.0 ppb (0) N/A 1.0 ppb (2) 29.0 ppb (27) N/A N/A 1.5 μg/m3 (7) 27.0
 
May 18, 2022, 3 p.m. N/A 0.5 ppb (1) N/A 0.0 ppb (0) N/A 1.0 ppb (2) 27.0 ppb (25) N/A N/A 1.2 μg/m3 (5) 25.0
 
May 18, 2022, 3 p.m. N/A 0.5 ppb (1) N/A 0.0 ppb (0) N/A 1.0 ppb (2) 27.0 ppb (25) N/A N/A 1.2 μg/m3 (5) 25.0
 
May 18, 2022, 2 p.m. N/A 0.2 ppb (1) N/A N/A N/A 1.0 ppb (2) 28.0 ppb (26) N/A N/A 0.9 μg/m3 (4) 26.0
 
May 18, 2022, 2 p.m. N/A 0.2 ppb (1) N/A -1.0 ppb (0) N/A 1.0 ppb (2) 28.0 ppb (26) N/A N/A 0.9 μg/m3 (4) 26.0
 
May 18, 2022, 1 p.m. N/A 0.3 ppb (1) N/A N/A N/A 1.0 ppb (2) 28.0 ppb (26) N/A N/A 1.0 μg/m3 (5) 26.0
 
May 18, 2022, 1 p.m. N/A 0.3 ppb (1) N/A N/A N/A 1.0 ppb (2) 28.0 ppb (26) N/A N/A 1.0 μg/m3 (5) 26.0
 
May 18, 2022, noon N/A 0.0 ppb (0) N/A N/A N/A 1.0 ppb (2) 28.0 ppb (26) N/A N/A 1.0 μg/m3 (5) 26.0
 
May 18, 2022, noon N/A 0.0 ppb (0) N/A -1.0 ppb (0) N/A 1.0 ppb (2) 28.0 ppb (26) N/A N/A 1.0 μg/m3 (5) 26.0
 
May 18, 2022, 11 a.m. N/A 0.2 ppb (1) N/A -1.0 ppb (0) N/A 1.0 ppb (2) 26.0 ppb (25) N/A N/A 1.0 μg/m3 (5) 25.0
 
May 18, 2022, 10 a.m. N/A 0.1 ppb (1) N/A -1.0 ppb (0) N/A 1.0 ppb (2) 25.0 ppb (24) N/A N/A 1.0 μg/m3 (5) 24.0
 
May 18, 2022, 2 a.m. N/A 0.1 ppb (1) N/A -1.0 ppb (0) N/A 1.0 ppb (2) 30.0 ppb (28) N/A N/A 1.6 μg/m3 (7) 28.0
 
May 18, 2022, 1 a.m. N/A 0.5 ppb (1) N/A -1.0 ppb (0) N/A 1.0 ppb (2) 32.0 ppb (30) N/A N/A 1.4 μg/m3 (6) 30.0
 
May 18, 2022, midnight N/A 0.7 ppb (1) N/A 0.0 ppb (0) N/A 1.0 ppb (2) 30.0 ppb (28) N/A N/A 1.6 μg/m3 (7) 28.0
 
May 17, 2022, 11 p.m. N/A 0.2 ppb (1) N/A N/A N/A 1.0 ppb (2) 30.0 ppb (28) N/A N/A 1.4 μg/m3 (6) 28.0
 
May 17, 2022, 10 p.m. N/A 0.3 ppb (1) N/A N/A N/A 1.0 ppb (2) 31.0 ppb (29) N/A N/A 1.3 μg/m3 (6) 29.0